The velocity v(t)of a particle as a function of time is given by v(t)= (2.3 m/s)+ (4.1 m/s2)t - (6.2 m/s3)t2.What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

A) -13 m/s2 B) -15 m/s2 C) 13 m/s2 D) 15 m/s2 E) 0 m/s2 A) -13 m/s2 B) -15 m/s2 C) 13 m/s2 D) 15 m/s2 E) 0 m/s2

A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere.What is the maximum height reached by the laser?

A) 8.0 m B) 18 m C) 48 m D) 144 m A) 8.0 m B) 18 m C) 48 m D) 144 m

An airplane starts from rest and accelerates at a constant 10.8 m/s2.What is its speed at the end of a 400 m-long runway?

A) 37.0 m/s B) 93.0 m/s C) 65.7 m/s D) 4320 m/s E) 186 m/s A) 37.0 m/s B) 93.0 m/s C) 65.7 m/s D) 4320 m/s E) 186 m/s

Exam 2: One-Dimensional Kinematics

To determine the height of a bridge above the water,a person drops a stone and measures the time it takes for it to hit the water.If the height of the bridge is 41 m,how long will it take for the stone to hit the water? Neglect air resistance.

(Multiple Choice)

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Question 81

A car moving initially with speed v₀ slows down with an acceleration of magnitude a and comes to a full stop after traveling a distance d.What was the speed of the car when it had traveled half that distance,d/2?

(Multiple Choice)

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Question 82

A ball is projected upward at time t = 0 s,from a point on a flat roof 10 m above the ground.The ball rises and then falls with insignificant air resistance,missing the roof,and strikes the ground.The initial velocity of the ball is 58.5 m/s. Consider all quantities as positive in the upward direction.At time t= 5.97 s, The vertical velocity of the ball is closest to

(Multiple Choice)

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Question 83

If the velocity of an object is zero,then that object cannot be accelerating.

(True/False)

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Question 84

A car starts from rest and accelerates uniformly at 3.0 m/s² toward the north.A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s² toward the north.How long after the second car starts does it overtake the first car?

(Multiple Choice)

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Question 85

Suppose that a car traveling to the west begins to slow down as it approaches a traffic light.Which of the following statements about its acceleration is correct?

(Multiple Choice)

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Question 86

A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance.Which one of the following statements about this rock while it is in the air is correct?

(Multiple Choice)

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Question 87

A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h.What is her average speed for the trip?

(Multiple Choice)

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Question 88

The velocity v(t)of a particle as a function of time is given by v(t)= (2.3 m/s)+ (4.1 m/s²)t - (6.2 m/s³)t².What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

(Multiple Choice)

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Question 89

An airplane needs to reach a forward velocity of 203.0 km/h. To take off. On a 2000-m. Runway,what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

(Multiple Choice)

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Question 90

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s².How far does it travel after starting?

(Multiple Choice)

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Question 91

A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s² and there is no atmosphere.What is the maximum height reached by the laser?

(Multiple Choice)

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Question 92

A car is moving with a constant acceleration.At time t = 5.0 s its velocity is 8.0 m/s in the forward direction,and at time t = 8.0 s its velocity is 12.0 m/s forward.What is the distance traveled in that interval of time?

(Multiple Choice)

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Question 93

The figure shows a graph of the velocity of an object as a function of time.What is the displacement of the object from 0 s to 8.0 s?

(Multiple Choice)

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Question 94

A jet plane is launched from a catapult on an aircraft carrier.In 2.0 s it reaches a speed of 42 m/s at the end of the catapult.Assuming the acceleration is constant,how far did it travel during those 2.0 s?

(Multiple Choice)

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Question 95

Consider a car that travels between points A and B.The car's average speed can be greater than the magnitude of its average velocity,but the magnitude of its average velocity can never be greater than its average speed.

(True/False)

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Question 96

When a ball is thrown straight up with no air resistance,the acceleration at its highest point

(Multiple Choice)

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Question 97

An object is thrown upwards with a speed of 16 m/s.How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance.

(Multiple Choice)

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Question 98

An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles.What is the average speed for the trip?

(Multiple Choice)

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Question 99

An airplane starts from rest and accelerates at a constant 10.8 m/s².What is its speed at the end of a 400 m-long runway?

(Multiple Choice)

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Question 100

Showing 81 - 100 of 138

Exam 2: One-Dimensional Kinematics

To determine the height of a bridge above the water,a person drops a stone and measures the time it takes for it to hit the water.If the height of the bridge is 41 m,how long will it take for the stone to hit the water? Neglect air resistance.

A car moving initially with speed v0 slows down with an acceleration of magnitude a and comes to a full stop after traveling a distance d.What was the speed of the car when it had traveled half that distance,d/2?

If the velocity of an object is zero,then that object cannot be accelerating.

A car starts from rest and accelerates uniformly at 3.0 m/s2 toward the north.A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2 toward the north.How long after the second car starts does it overtake the first car?

Suppose that a car traveling to the west begins to slow down as it approaches a traffic light.Which of the following statements about its acceleration is correct?

A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance.Which one of the following statements about this rock while it is in the air is correct?

A motorist travels for 3.0 h at 80 km/h and 2.0 h at 100 km/h.What is her average speed for the trip?

The velocity v(t)of a particle as a function of time is given by v(t)= (2.3 m/s)+ (4.1 m/s2)t - (6.2 m/s3)t2.What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

An airplane needs to reach a forward velocity of 203.0 km/h. To take off. On a 2000-m. Runway,what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest?

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s2.How far does it travel after starting?

A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere.What is the maximum height reached by the laser?

A car is moving with a constant acceleration.At time t = 5.0 s its velocity is 8.0 m/s in the forward direction,and at time t = 8.0 s its velocity is 12.0 m/s forward.What is the distance traveled in that interval of time?

The figure shows a graph of the velocity of an object as a function of time.What is the displacement of the object from 0 s to 8.0 s?

A jet plane is launched from a catapult on an aircraft carrier.In 2.0 s it reaches a speed of 42 m/s at the end of the catapult.Assuming the acceleration is constant,how far did it travel during those 2.0 s?

Consider a car that travels between points A and B.The car's average speed can be greater than the magnitude of its average velocity,but the magnitude of its average velocity can never be greater than its average speed.

When a ball is thrown straight up with no air resistance,the acceleration at its highest point

An object is thrown upwards with a speed of 16 m/s.How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance.

An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles.What is the average speed for the trip?

An airplane starts from rest and accelerates at a constant 10.8 m/s2.What is its speed at the end of a 400 m-long runway?

Introduction to Physics

Vectors in Physics

Two-Dimensional Kinematics

Newtons Laws of Motion

Applications of Newtons Laws

Work and Kinetic Energy

Potential Energy and Conservation of Energy

Linear Momentum and Collisions

Rotational Kinematics and Energy

Rotational Dynamics and Static Equilibrium

Gravity

Oscillations About Equilibrium

Waves and Sound

Fluids

Temperature and Heat

Phases and Phase Changes

The Laws of Thermodynamics

Electric Charges, Forces, and Fields

Electric Potential and Electric

Electric Current and Direct-Current Circuits

Magnetism

Magnetic Flux and Faradays Law of Induction

Alternating-Current Circuits

Electromagnetic Waves

Geometrical Optics

Optical Instruments

Physical Optics: Interference and Diffraction

Relativity

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A car moving initially with speed v₀ slows down with an acceleration of magnitude a and comes to a full stop after traveling a distance d.What was the speed of the car when it had traveled half that distance,d/2?

A car starts from rest and accelerates uniformly at 3.0 m/s² toward the north.A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s² toward the north.How long after the second car starts does it overtake the first car?

The velocity v(t)of a particle as a function of time is given by v(t)= (2.3 m/s)+ (4.1 m/s²)t - (6.2 m/s³)t².What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s².How far does it travel after starting?

A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s² and there is no atmosphere.What is the maximum height reached by the laser?

An airplane starts from rest and accelerates at a constant 10.8 m/s².What is its speed at the end of a 400 m-long runway?