Forward **thrust** has positive values and reverse thrust has negative values.

Thrust is a sudden **push or pull** in a certain direction.

a)

**Flight speed** u = 150 km/h

1 km/h = [tex]\frac{1}{3.6}[/tex] km/s

therefore, 150 km/h = 41.67 km / s

The thrust force represents the horizontal or x-component of momentum equation:

[tex]T = m_{exhaust} * U_{exhaust} - U_{flight}[/tex]

T = 50 * (150 - 41.67)

T = 5416.67 N

Therefore, the value of **forward thrust** is 5416.67 N.

b)

Now the **exhaust velocity** is now vertical due to reverse thrust application, then it has a zero horizontal component,

thus thrust equation is:

[tex]T = m_{exhaust} * U_{exhaust} - U_{flight}[/tex]

T = 50 * (0 - 41.67)

T = -2083.5 N

Therefore, the thrust force T is -2083.5 N in the **reverse direction.**

c)

Now the exhaust velocity and flight velocity is zero, then it has a zero **horizontal component**, thus thrust is also zero because[tex]U_{exhaust} = U_{flight} = 0\\[/tex]

T = 0

Therefore, there is **no difference** in two velocities in x direction.

The given question is incomplete, the complete question is,

"The idling engines of a landing turbojet produce forward thrust when operating in a normal manner, but they can produce reverse thrust if the jet is properly deflected. Suppose that while the aircraft rolls down the runway at 150 km/h the idling engine consumes air at 50 kg/s and produces an exhaust velocity of 150 m/s.

a. What is the forward thrust of this engine?

b. What are the magnitude and direction (i.e., forward or reverse) if the exhaust is deflected 90 degree without affecting the mass flow?

c. What are the magnitude and direction of the thrust (forward or reverse) after the plane has come to a stop, with 90 degree exhaust deflection and an airflow of 40 kg/s?"

To know more about **thrust,**

https://brainly.com/question/14552836

**#SPJ1**

a rotor rotating about a fixed axis through its mass center, the rotor has a mass of 60 kg, radius of gyration of 70 mm, and angular acceleration of 9 rad/s2. determine the moment the fixed axis.

Given

60 kg of mass, 70 mm or 0.07 meters of **gyroscopic** radius, and 9 rad/sec2 of **angular acceleration**

**Inertia**, It is an object's resistance to any change in motion. The amount of inertia is directly related to an object's mass; in fact, as we frequently observe, the heavier an object is, the harder it is to change its direction of motion.

The moment of inertia must be identified. EM = I > I > MK2

I stands for inertia mass moment.

I = 60 kg/m2 M = I = 0.216 kg/m2 = 11 kg/m2 M = 2.376 nm

To know more about **Inertia**, visit-

**https://brainly.com/question/1358512**

#SPJ4

**Answer:**

**Explanation:**

Given:

m = 60 kg

R = 70 mm = 0.070 m

ε = 9 rad/s²

__________________

M - ?

**The moment:**

M = J·ε = m·R²·ε

M = 60·0.070²·9 ≈ 2.65 N·m

which requires the most energy to melt it: 1kg of ice, 1kg of solid lead or 1kg of solid ethanol

The **substance **that requires the **greatest amount **of energy to melt is **ice**.

The **latent heat** of fusion refers to the energy that is required to melt 1 Kg of a substance. We must note that this heat goes into the breaking of the internal bonds of the material. Thus, the nature of the** internal bonds** in the materials are important when we are dealing with the** latent heat **of fusion.

We can see that the particles of ice are held together by the strong **hydrogen bonds**. As such, we can see that ice has the highest latent heat of fusion.

Learn more about** latent heat**:https://brainly.com/question/13428994

#SPJ1

In the case of falling, the time will double how much the height will increase

In the case of** falling**, the time will double then the **height** will increase by a factor of **4 times.**

In this problem, we are dealing with **free-falling **and** distance**, where distance is The physical quantity that can be defined by how the object or body is seen far away, whereas** displacement **and Distance both are different physical meanings but have the same standard units and whereas a** free falling object** is an object that's falling beneath the sole impact of gravity. Any object that's being acted upon as it were by the **force of gravity **is said to be in a state of free fall.

Since we are given that the falling time is doubled, since the formula for the distance by the **equation of motion** is

s=1/2gt²

where g is the **acceleration due to gravity** and t is the** time**, so if the time is increased by 2 times, then the distance increase by the value of 4 times as distance is directly proportional to the square of the **falling time**.

To know more about **free falling **refer to the link https://brainly.com/question/13299152?referrer=searchResults.

#SPJ1

Bode made a rocket using an empty plastic bottle and fins made out of cardboard. After partially filling the bottle with water, he pumps air into the bottle using a pump attached to the rocket with plastic tubes. When the pressure in the bottle becomes high enough, the water gushes out and launches the rocket into the air, as shown in the diagram below.

How does the force that causes the water to leave the rocket compare to the force that causes the rocket to launch?

A.

They are unequal and act in opposite directions.

B.

They are equal and act in the same direction.

C.

They are equal and act in opposite directions.

D.

They are unequal and act in the same direction.

The force that causes the water to leave the **rocket **compared to the **force **that causes the rocket to launch is that they are unequal and act in opposite directions.

According to Newton's third law of **motion**, every action has a corresponding and opposing response. In the instance of Bode's rocket, the pressured air in the bottle causes the water to rush downward out of the bottle, causing the rocket to fly upward into the air. The upward force on the **rocket **is equivalent to the force of the water streaming down. Thus, the two forces are equivalent and exert opposing **forces**.

When you pump, more **air **is pumped into the bottle while maintaining the same **volume**. By doing this, you raise the pressure inside the bottle, increasing the force acting on the interior of the bottle. Eventually, when the bottle can no longer withstand the pressure, the cork will be violently ejected from the bottle's bottom by the force of the **pressure**.

The air will be forced out of the **bottle **as rapidly as possible by the abrupt pressure drop caused by the new opening. When the air leaves the bottle, the pressure that was previously holding it under pressure is used to drive all of the **water **out with it.

Learn to know more about **the force** on

https://brainly.com/question/25239010

#SPJ1

**Answer:**

They are equal and act in opposite directions.

**Explanation:**

**I just answered the question on study island and got it right :P**

If an element starts off with an activity of 100Bq, and its half life is 10 minutes, what would the activity be after 5 minutes???

I'm literally giving out 100 points and I really need the help :/

From the calculation, the **activity **of the **isotope **is ** 70.7 Bq.**

We define the term** half life **as the amount of a radioactive **isotope **that is left after a given time. It is in fact the time that it takes for only half of the amount of the radioactive isotopes that is in a sample to remain.

Recall that if a substance is radioactive, this implies that the sample is capable of spontaneous **disintegration**. The amount of the sample that is present tends to diminish in the system as time increases.

Give the fact that;

Ao = initial activity = 100Bq

A = activity after time t = ??

Time taken = 5 minutes

Half life of the isotope = 10 minutes

Now we know that;

A/Ao = (1/2)^t/t1/2

A/100 = (1/2)^5/10

A/100 = (1/2)^1/2

A = (1/2)^1/2 * 100

A =** 70.7 Bq**

Learn more about** half life**:https://brainly.com/question/24710827

#SPJ1

A merry-go-round spins freely when janice moves quickly to the center along a radius of the merry-go-round. It is true to say that.

No, its fake the instant of **inertia** of the **machine** decreases and the **angular** pace will increase.

A **merry**-go-spherical spins freely while **janice** actions fast to the middle alongside a radius of the merry-go-spherical. Moment of inertia is a amount withinside the rotational movement which performs a position analogous to position performed with the aid of using mass withinside the linear **movement**. Hence, it's also referred to as angular **mass** or the rotational momentum.

Janice decreases her contribution to the instant of inertia of the machine with the aid of using transferring towards the **rotation** axis. This decreases the whole second of inertia of the machine. The angular **momentum** L of the machine does now no longer extrade seeing that no outside **torque** is applied. The **angular** pace ω will increase sinceω = L/I.

Learn more about **angular speed** visit: https://brainly.com/question/6860269

#SPJ4

what is the speed of the protons? (note: the speed is high enough that, in principle, we should use a relativistic calculation--something you'll learn about further--but for this problem you should use the formulas you are already familiar with.)

The speed of the **protons** v is 1.089[tex]e^{8}[/tex] m/s.

Every atom has a proton, a subatomic particle, in its nucleus. The particle has an electrical charge that is opposite to the electrons and is positive.

Define potential difference.To establish a potential difference, a unit of positive **electric charge** must be transported from one location to another.

Here we are given a** potential difference **as 62MV= 62[tex]e^{6}[/tex]V

Now, as per classical definition, equation P.E. and the K.E.

So we have,

qV = 1/2[tex]\frac{m}{s^{2} }[/tex]

V is the potential difference and v is the velocity.

v = [tex]\sqrt\frac{2qV}{m}[/tex]

By substituting the values we get,

v = 1.089[tex]e^{8}[/tex] m/s

The speed of the protons v is 1.089[tex]e^{8}[/tex] m/s.

To know more about **potential differences,** visit:

**https://brainly.com/question/12198573**

#SPJ4

A patient's tumor is being treated with proton-beam therapy. The protons are accelerated through a potential difference of 62 MV. What is the speed of the protons? (Note: The speed is high enough that, in principle, we should use a relativistic calculation something you'll learn about in Chapter 27 but for this problem, you should use the formulas you are already familiar with.)

The largest and the smallest balls used in the experiment are with diameter 9. 52 mm, and 2. 38 mm respectively. For a glycerin with viscosity 1. 0 pa. S, what is the time necessary for each ball to reach a velocity 95% of the terminal velocity? density of the ball material is given in the text. Round the result to three decimal places.

The **time **necessary for the larger ball is 66.904 x 10⁻³ s and for the smaller ball is 4.166 x 10⁻³ s.

We have ,

density of balls(ρ) = 1.42 g/cm³

**density **of glycerin(σ) = 1.30 g/cm³

**acceleration **due to gravity = 9.8 m/s²

Diameter of larger ball = 9.52 mm

diameter of smaller ball = 2.38 mm

we know that the formula for terminal velocity is given by

[tex]V_{t}[/tex] =( [tex]\frac{2r^{2}g}{9n}[/tex] ) (ρ - σ)

now for larger ball **terminal velocity **is given by

[tex]V_{1}[/tex] = (2 [9.52/2 x 10⁻³]² x 9.8 x(1.42 x 10⁻³ - 1.30 x 10⁻³ )) **/ **9 x 1.0

∴ [tex]V_{1}[/tex] = 5.92 x 10⁻³ m/s

now for smaller ball terminal velocity is given by

[tex]V_{s}[/tex] = (2 [2.38/2 x 10⁻³]² x 9.8 x(1.42 x 10⁻³ - 1.30 x 10⁻³ )) **/ **9 x 1.0

[tex]V_{s}[/tex] = 0.37 x 10⁻³ m/s

Now 95 % of the terminal velocity of larger ball will be = 5.62 x 10⁻³ m/s

95 % of the terminal velocity of smaller ball will be = 0.35 x 10⁻³ m/s

Also the acceleration = 0.084 m/s⁻²

using the equation of motion

v= u + at ( v= 95% velocity and u = initial velocity (0) )

as u = 0

∴ v = at

t = v/a

so we can calculate **time **as follows

t (larger ball) = 5.62 x 10⁻³/0.084 = 66.904 x 10⁻³ seconds

t (smaller ball)= 0.35 x 10⁻³/ 0.084 = 4.166 x 10⁻³ seconds

learn more about **terminal velocity **here :

https://brainly.com/question/28449904

#SPJ4

The diagram shows a position-time graph.

Position vs Time

What is the displacement of the object?

O-2 m

O-1 m

O 3m

O4m

**Answer:**

0_2 is 0.2 with 0_1 0.1 will 0_3 is 0.3 and with 0_2 0.

**Explanation:**

2

a 22-g bullet traveling 240 m/s penetrates a 1.7 kg block of wood and emerges going 125 m/s .if the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

**Answer:**

m v1 = M V + m v2 conservation of momentum

V = m (v1 - v2) / M

V = .022 (240 - 125) / 1.7 = 1.49 m/s

Alcohol abuse can lead directly to all of the following Except

Group of answer choices

lung cancer

brain damage

heart disease

stroke

Lung cancer. Brain damage, heart disease and stroke can be caused by alcohol abuse but lung cancer cannot.

**Alcohol abuse** can lead to various health risks including brain damage, heart diseases, stroke etc. But studies yet not proved any connection of alcohol use with **lung cancer**.

**Alcohols **are organic compounds with **OH groups**. They are used in beverages as sprits which causes, **neurodegeneration** and nerve injury. The use of alcohol and further adverse affects is called alcohol abuse.

**Alcohol **abuse leads to severe damages to almost all parts of the body from brain to digestive system. **Alcoholic products** interfere with the nerve functions and suppress the excitatory **nerve pathway** activity causing brain damage and strokes.

Alcohol abuse further causes high blood pressure and damage to the heart valves . However, is is not reported that alcoholic use cause lung cancer. It is mainly caused by **smoking**. Thus option **a** is correct.

To find more **alcohol abuse**, refer here:

https://brainly.com/question/2526379

#SPJ2

When the lever is pulled, 2 kg of carbon dioxide is ejected at a speed of 60 m/s. The remaining mass of the person, chair, and cylinder is 80 kg. After the ejection, how fast will the chair be moving?.

The **combined velocity** of the car and the chair is 1.5 m/s.

By the use of the law of the conservation of **linear momentum** we know that the total momentum before collision is equal to the sum of the final momentum after collision.

We have to first obtain the momentum of the system before and after the collision has occurred as we see below;

Then we have;

Momentum before collision = 2 Kg * 60 m/s = 120 Kgm/s

Momentum after Collison = 80v Kgm/s

Momentum = mv

m = mass of the object

v = velocity of the object

Using the principle of the conservation of momentum;

120 = 90v

v = 120/80

v = 1.5 m/s

Learn more about **momentum**:https://brainly.com/question/904448

#SPJ1

Suppose an asteroid orbits the sun with a mean radius 11 times that of Earth. Use the simplified version of

Kepler's third law (T2= a³) to find the period of the asteroid? Round your answer to the nearest Earth year.

**Answer:**

36 years

**Explanation:**

Given the equation of **Kepler's third law** as T² = a³, you want to know the period of an **asteroid** that has an orbital **radius of 11 au**.

Solving the given equation for t, we find ...

T = a^(3/2) . . . . . . take the 1/2 power

Then for a=11, the period in years is ...

T = 11^(3/2) ≈ 36.48

**The period of the asteroid is about 36 years**.

ANSWER ASAP: Leandra is working with a machine that uses 10,000w of power in 2 hours. Find the amount of work done by the machine.

w means "Watts"

The time must also be converted into seconds.

If Leandra is working with a machine that uses 10,000 watts of **power **in 2 hours, then the amount of **work **done by the machine would be 72000000 **Joules**.

The total amount of **energy** transferred when a force is applied to move an object through some distance.

The **work **done is the multiplication of applied **force **with the displacement.

As given in the problem Leandra is working with a **machine** that uses 10,000 Watts of **power **in 2 hours,

Power = work done / time

10000 = work done /3600*2

Work done = 72000000 Joules

Thus, the **work **done by Leandra would be 72000000 **Joules**.

To learn more about **work done**, refer to the link

brainly.com/question/13662169

#SPJ1

In coming to a stop, a car has left black tire marks of length 92 m on a road. Assuming

the best rate of slowing down for this car is 7 m/s calculate the velocity of the car just

before braking

Fall

The velocity of the car just before breaking **35.9 m/s**

Braking distance, s = 92.0 m

Deacceleration = 7 m/s²

Speed of the car when stopped, =0

Let the speed of the car just before braking, =0

Using the equation of motion ²=²+2as

² = ² - 2as

² = 0² - 2(-7)(92.0)

² = 1288

≈ 35.9 m/s ← speed of the car just before breaking

What is acceleration?**Acceleration **can be defined as a vector quantity that determines the rate at which an object changes its **velocity**. An object continues to **accelerate **as it changes its speed over and over again.

Acceleration has nothing to do with changing the target's movement **speed**. If an object does not change its **speed**, then the object is not accelerating. The data on the right represents an object **moving north**. The speed of the target changes over **time**. In fact, the speed changes by a **constant amount** - ie. 10 m/s - every second. When the speed of an object changes, the object is said to be in **accelerated motion** or acceleration.

To learn more about **acceleration**, visit;

**https://brainly.com/question/16768483**

#SPJ13

isabella's mom bought her a microscope so she could observe a plant cell.during her observation, she rotates the objective lens from 4x to 10x so she could view the plant cell at a higher magnification. what was the total magnification when she changed the objective lens?

Add the eyepiece's power, typically 10X, to the objective's (4x) power to get the overall **magnification**. Total magnification for 4x lens is **40x **and 10x is **400x**.

Make sure the 4X scanning objective is locked into position and the stage is completely down before viewing a slide through the **microscope**.

Set the slide over the aperture that you want to see, then carefully place the stage clips on top of the slide to secure it in place.

Start with the 4X objective, keep both eyes open while looking through the eyepiece (if necessary, cover one with your palm), and gradually raise the stage using the coarse adjustment knob until the image is clear. The coarse adjustment knob will only need to be used once during the operation. You will be utilizing parfocal **microscopes**, which means that the image. Things appear 40 times bigger than they are using a 40x objective. Comparing objective **magnification **is relative. The capacity of a **microscope **to create an image of an object at a scale bigger (or even smaller) than its real size is known as magnification.

Learn more about **magnification** here:

https://brainly.com/question/21370207

#SPJ4

suppose the object's angular coordinate θ is changing at a rate of 1/5 rad/sec when the object is 4 meters from the source of the central force. express f ( r ) in terms of m and r (measured in kg and meters, respectively).

The f(r) in terms of m and r measured in kg and meters from **angular velocity** is **4/5t **.

We need to know about **angular velocity** to solve this problem. The **angular velocity** can be defined as rotational velocity and have a relationship with linear velocity. The **angular velocity** should follow

ώ = v / R

where ώ is the **angular velocity**, v is linear velocity and R is the radius.

From the question above, the given parameters are

ώ = 1/5 rad/s = 180 / 5π ⁰/s

θ = θ

R = 4 m

Find the linear velocity

ώ = v / R

1/5 = v / 4

v = 4/5 m/s

Find the position function (f(r))

dv = df(r) / dt

f(r) = ∫v.dt

f(r) = ∫4/5 . dt

f(r) = 4/5 t

Find more on **angular velocity** at: https://brainly.com/question/24158647

#SPJ4

Which of the following scenarios would most likely be considered pseudoscience?

A team of scientists replicating another experiment.

Generating a claim based on empirical evidence.

The theory of relativity.

The belief that the stars determine our fate.

The belief that the **stars** determine our fate is considered to be **pseudoscience .**

Pseudoscience, which is defined as an activity that purports to be scientific but is actually not, is defined as seems science. Science does not engage in extraterrestrial affairs it simply studies the natural world. Science cannot provide an answer to morality, immorality, or questions of meaning or purpose, but it does require ethical behavior. In other hand astronomy is regarded as pseudoscience since no link between the locations of the stars and human behavior can be demonstrated using evidence from science.

To know about **star**

https://brainly.com/question/10714478

#SPJ1

**Answer: The answer is The belief that the stars determine our fate or C**

**Explanation:**

What is the mass of a blow dart that experiences a blowing force of 0.20 Newtons and travels the length of the 1.2 meter barrel in 0.04 seconds? (HINT: first find the acceleration)

The **mass of a blow dart** that experiences a blowing force of 0.20 Newtons and travels the length of the 1.2 meter barrel in 0.04 seconds is 0.26 g

**a = v / t**

**v = d / t**

a = Acceleration

v = Velocity

d = Distance

t = Time

d = 1.2 m

t = 0.04 s

v = 1.2 / 0.04

v = 30 m / s

a = 30 / 0.04

a = 750 m / s²

According to Newton's second law of motion,

**F = m a**

F = Force

m = Mass

F = 0.2 N

m = F / a

m = 0.2 / 750

m = 2.6 * [tex]10^{-4}[/tex] kg

m = 0.26 g

Therefore, the mass of a blow dart is **0.26 g**

To know more about **Newton's second law **of motion

https://brainly.com/question/13447525

#SPJ1

An electron is moving with a velocity of 4.3 x 106 m/s in a uniform magnetic field of strength 3.5 T. The velocity vector makes a 55o angle with the magnetic field. What is the magnitude of the magnetic force on the electron?Group of answer choices4.0 x 10-12 N8.0 x 10-12 N2.0 x 10-12 N6.0 x 10-12 N

**Given:**

The velocity of the electron is

[tex]v=4.3\times10^6\text{ m/s}[/tex]The strength of the uniform magnetic field is B = 3.5 T

The angle between the velocity of the electron and the magnetic field is 55 degrees.

Also, the charge on the electron is

[tex]e\text{ =1.6}\times10^{-19\text{ }}C[/tex]**To find **the magnetic force on the electron.

**Explanation:**

The magnetic force can be calculated as

[tex]\begin{gathered} F=\text{Bev sin }\theta \\ =3.5\times1.6\times10^{-19}\times4.3\times10^6sin(55^{\circ}\text{)} \\ =2\times10^{-12}\text{ N} \end{gathered}[/tex]**Final Answer: The magnetic force on the electron is 2 x 10^(-12) N **

a race car driver is driving his car at a constant speed of 51.0 m/s on a circular track with a radius of 235 m. (a) what is the angular speed (in rad/s) of the car? rad/s (b) what are the magnitude (in m/s2) and direction of the car's acceleration? magnitude m/s2 direction

0.19362 rad/s is the **angular speed** and 8.8096 m/s2 is car's **acceleration.**

[tex]angular speed=\omega=v/r=45.5m/s/235m=0.19362rad/sec[/tex]

[tex]car acceleration =a=v^2/r=45.5^2m/s^2/235m=8.8096m/s^2[/tex]

The definition of angular speed is the rate of **change **of **angular displacement**, which is the angle a body travels along a circular route. The ratio of the number of rotations or revolutions performed by a body to the time taken is used to compute angular speed. The** Greek letter ** **Omega**, stands for angular speed.** Rad/s** is the angular speed unit in the SI.

As is common knowledge, **angular speed** is defined as the rate of change of displacement divided by the time. Therefore, the equation for angular speed is = /t. Despite the **aforementioned **method, there is a different and more popular **formula **for calculating angular speed when it comes to competitive tests. As** ω = θ/t**

To know more about **angular speed** visit : https://brainly.com/question/16407861

#SPJ4

you are an electron moving forward. you fly into a region where the magnetic field is pointing to your right. what is the direction of the magnetic force?

Therefore, the electric charge will travel in a circle around a** fixed **point. Positive charges move in a counterclockwise manner when the magnetic field is pointing into the page, whereas negative charges move in a **clockwise **direction (apply the right hand rule).

**Perpendicular** to the direction of motion is the direction of the force caused by a magnetic field.

According to the** right hand rule**, you should point your right thumb toward the direction of the velocity (v), your** index finger** toward the direction of the **magnetic field **(B), and your middle finger toward the direction of the** magnetic force** that results from that.

Right hand rule #1 governs the direction of the magnetic force on a moving charge, which is perpendicular to the plane formed by v and B. (RHR-1)

To learn more about **magnetic field's force **refer to:

https://brainly.com/question/24761394

#SPJ4

Equal masses are suspended from two separate wires. The wires have identical lengths. The first wire has a larger cross-sectional area than the second wire. Which wire will stretch the least?.

As the larger **cross-sectional **area results in** less stress force** therefore, for the **same force **, stress is less in **large **cross -section and it **streches less**

According to** Hooke's rule**, stress and strain are directly inversely related, meaning that as stress rises, strain rises as well. There is no need that the connection between strain and stress be linear. It is valid when the **deformation **is caused by a relatively tiny bulk stress.

**Stress=K×strain**

The **elastic modulu**s is the proportionality constant characterizing the connection between stress and strain.

Stress=Elastic modulus×Strain

The term **"bulk modulus**" refers to the elastic modulus for bulk stress. The ability of the material to endure changes in volume under pressure from all sides may be expressed numerically as the bulk modulus. It describes the elastic characteristics of **solids **and **fluids **under pressure on all surfaces.

To know more about ** stress force **visit : https://brainly.com/question/929277

#SPJ4

a bird flying 3.45 m / s directly north feels a window directly east and accelerates 0.558 m / S^2. What is its velocity 5.25 s later

If a bird flying 3.45 m / s directly north feels a window directly east and **accelerates **0.558 m / s², then its **velocity **after 5.25 seconds would be

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem If a bird flying 3.45 m / s directly north feels a window directly east and **accelerates **0.558 m / s²,

By using the first **equation **of motion,

v = u + a × t

v = 3.45 + 0.558 × 5.25

v = 6.537 m / s

Thus, its **velocity **after 5.25 seconds would be 6.537 m / s

Learn more about **equations of motion **here,

brainly.com/question/5955789

#SPJ1

**Answer:**

about 4.53 m/s 40.3° east of north

**Explanation:**

You want the **velocity of a bird** flying **3.45 m/s north** after being **accelerated** by a wind at **0.558 m/s² directly east** for **5.25 seconds**.

The attached table shows the result of the acceleration. The change in "x" velocity is the product of the acceleration and time. The y-velocity is unaffected by the easterly acceleration.

Final velocityThe magnitude of the final velocity is the root of the sum of the squares of its components:

Vf = √(2.9295² +3.45²) ≈ **4.5226 . . . . m/s**

The direction of the final velocity is ...

arctan(3.45/2.9295) ≈ 49.7° . . . . . CCW from east

**The magnitude of the bird's final velocity is about 4.53 m/s. Its direction is about 40.3° east of north, or 49.7° north of east**. **The components of the velocity are about 2.93 m/s east and 3.45 m/s north**.

__

*Additional comment*

The second attachment shows the bird's direction as a "bearing" angle, conventionally measured clockwise from north. The answer above gives the complementary angle, measured CCW from east.

Problem values are given to 3 significant figures, so we have rounded results to that precision.

Which best describes the velocity of a rolling pen?

4 s2

4 cm/s

4 cm west

4 cm/s west

[tex]\huge\underline\mathcal{Answer \: - }[/tex]

velocity is a vector quantity that tells us about the speed as well as direction of an object.

Thus , the best description of velocity will be the one which tells us the speed as well as direction of the rolling pen.

therefore ,

the last option **4**** ****cm/****s ****west **is correct!

hope helpful ;-;

if you answer i will mark you as brainlist

reaction

Newtons third law states that for every action there is an equal but opposite reaction

and for that object (rocket, missile, jet,) as the engine is ignited the force of the burning fuel pushes backward while the rocket moves forward so the rate at which the fuel burns is equal to the rate at which the object moves forward

the force at which the burning fuel pushes backward is equal but opposite to the rate at which the object moves forward

An astronaut jumped on Mars. His initial velocity

was 1.88 m/s. If the gravitational acc. is -3.5-m/s²

on the moon,

a) What is the TOTAL time the astronaut is in the

atmosphere?

b) How high did the astronaut jump?

Due to the **law of gravit**y, or** gravitation,** which draws all objects with mass in its vicinity toward it, **Mars**' gravitation is a natural occurrence.

.53 s the astronaut is in the atmosphere.

astronaut jump form .49 m.

What is Mars famous for?The rusty red color offrom motion Equation : v= u + at

then we can find t = [tex]\frac{v-u}{a}[/tex] = -1.88/ 3.5 = .53 sec

s = ut + ½at²

put u = 1.88 a= -3.5 and t= .53

s = .49 m

.53 s the astronaut is in the atmosphere.

astronaut jump form .49 m.

To learn more about : **Mars**

Ref : https://brainly.com/question/644043

#SPJ13

A 75 kg student drives a 650 kg car. What is the applied force on the car if the car

starts from rest and accelerates to 60 m/s in 8 seconds?

**Answer:**

5437.5

**Explanation:**

I took the quiz.

A rifle is aimed horizontally at a target 53 m away. The bullet hits the target 2.3 cm below the aim point.

The** time of flight** of bullet is 0.0685 seconds and the** speed** when it emerges out of the gun is 775.

As the bullet is fired horizontally from the gun at a distance of 53m away. But the bullet hits the target 2.3cm below the target.

So, the** vertical displacement** of the bullet is 2.3cm. The accelerations in the vertical direction will be g (acceleration due to gravity).

(a) As we know, in case of gravity, we can use** equations of motion,**

So, using** equation,**

S = ut + 1/2gt²

Where, u is the initial velocity of the bullet which is 0m/s in this case,

S is the vertical displacement of the bullet,

g is **acceleration due to gravity** and,

t is **time of flight** of the bullet.

Putting all the values,

S = 1/2gt²

2.3/100 = 1/2(9.8)(t²)

0.023 = 4.9t²

t² = 0.00469387

t = √0.0046987

t = 0.0685 seconds.

(b) The velocity as it emerges from the gun is equal to the muzzle velocity of the gun,

So, we can write,

**Muzzle velocity V** =** Horizontal distance** covered/**time taken.**

V = 53/0.0685

V = 773.72 m/s.

One thing that should be noted here is that the initial velocity that we took as zero in part (a) is taken with respect to the vertical motion and nit the Horizontal motion. So, one should not confuse the muzzle velocity in part (b) with the initial velocity mentioned in the part(a)

To know more about** Equations of motion,** visit,

https://brainly.com/question/25905661

#SPJ9

Complete question - A rifle is aimed horizontally at a target 53 m away. The bullet hits the target 2.3 cm below the aim point. Find

(a) the bullets time of flight and (b) its speed as it emerges from the rifle?

Newton's Law with Friction (Force on Angle) please help

The **Acceleration **of the system as depicted in the diagram is **1.38 m/s².**

**Acceleration **is the rate of change of velocity. The S.I unit of **acceleration **is m/s²

To calculate the **acceleration **of the system, we use the formula below.

Formula:

a = (Fcos∅-mgμ)/m.......... Equation 1Where:

a =From the question,

Given:

m = 1.1 kgF = 5.4 N∅ = 54.6°μ = 0.15g = 9.8 m/s²Substitute these values into equation 1

a = {(5.4cos54.6°)-(1.1×9.8×0.15)}/1.1a = (3.13-1.617)/1.1a =Hence, the **acceleration **of the system is** 1.38 m/s².**

Learn more about **acceleration **here: https://brainly.com/question/26216029

#SPJ1

b. Alejandro needs 13 yards of wire. How much will he spend on wire?.
Auto manufacturers are currently offering flex-fuel vehicles that are designed to run on ethanol gasoline mixtures. An economist recently analyzed the cost versus value consideration of these vehicles and found that the market is currently buying approximately the socially efficient amount of flex fuel vehicles. Under lobbying pressure from the car manufacturers and environmental groups, the federal government is considering a $3,000 subsidy paid per flex fuel vehicle sold. If this subsidy goes through, what would be the most likely impact on market efficiency?.
Maggie walks at a constant speed.Maggie plots points on the coordinate plane below to show amounts of time it takes her to walkcertain distances.Distance(km).
Why is the Second Continental Congress significant?ANSWER FOR BRAINLIST It wrote the Declaration of Independence. It convinced King George to remove troops from the colonies. It formed an alliance with Prussia against Britain. It sent Benjamin Franklin to Britain to negotiate with King George.
Aside from geothermal energy and hydroelectric energy, what are the other renewable sources of energy we can find here in earth?
Math word problem covert into systems of equations
THIS IS VERY URGENT IM OFFERING 60 POINTS AND ILL MAKE YOUR BRAINLIEST!!! An isotope of the element iridium has a 77 protons and 115 neutrons in its nucleus.Which of the following correctly represents this isotope?A.115 over 77 IrB. 77 over 115 IrC. 192 over 77 IrD. 192 over 115 IrPLEASE HURRY :C
Identify the like terms in the expression.12n - 6+p+6n
A box is in the shape of a right rectangular prism made from cardboard has dimensions of 18 inches, by 12 inches, by 8 inches, as shown in the diagram below. find the volume of the box and show your calculations and use appropriate units
I am having a few international visiting faculty friends over for dinner. One is from Israel who has mentioned to me his schedule constraints due to the Sabbath and so we are eating on a Thursday night. One guest in from India and is a practicing Muslim, and one is from France. I am trying to decide on a menu for the evening that would likely not interfere with anyones religious or cultural restrictions, however, ALL of my new friends have expressed an interest in trying tacos which are very popular in the US. . .. so, I am making a taco dinner. What should I prepare for my taco dinner? Why? How would this likely not contradict any of my guests religious or cultural restriction
when government policies lead to outcomes that are worse than those that would occur in unregulated markets: liveweight loss occurs. government efficiency occurs. marginal costs occur. government failure occurs.
Solve the equation for x. 0.28x 15.3 = 1.92 x = 61.5 x = 61.5 x = 47.8 x = 47.8
Simplify the equation. Show your work.[tex]-i^3^2[/tex]
Find the sector area of the circle. Use 3.14 for the value of pi
HELP ME PLEASE!!! due tonight
What are the errors in numbers 3 and 4 A.spelling B.capitalization C.punctuation D.No error
Pls answer this! it's urgent!
how did malala yousafzui react to the taliban policies against girls and woman
what are the characteristics of a formal writing style? check all that apply. use of long words elimination of editorializing emphasis on active-voice verbs use of figures of speech use of complex sentences
A soccer player kicked a ball with a initial velocity of 22 m/s at an angle of 20 degrees above the horizontal. How far did the ball go before returning to the ground? Answer in meters.