Question 1

Suppose that an object is moving with constant acceleration. Which of the following is an accurate statement concerning its motion?

Accepted Answer

A)  In equal times its speed changes by equal amounts. 
B)  In equal times its velocity changes by equal amounts. 
C)  In equal times it moves equal distances. 
D)  The object is not moving; it is at rest. 
E)  A statement cannot be made without additional information. 
A)  In equal times its speed changes by equal amounts. 
B)  In equal times its velocity changes by equal amounts. 
C)  In equal times it moves equal distances. 
D)  The object is not moving; it is at rest. 
E)  A statement cannot be made without additional information.

Question 2

The area under a curve in a velocity versus time graph gives

Accepted Answer

A)  distance traveled. 
B)  displacement. 
C)  speed. 
D)  velocity. 
E)  acceleration. 
A)  distance traveled. 
B)  displacement. 
C)  speed. 
D)  velocity. 
E)  acceleration.

Question 3

A foul ball is hit straight up into the air with a speed of 30.0 m/s.
(a.) Calculate the time required for the ball to rise to its maximum height.
(b.) Calculate the maximum height reached by the ball.
(c.) Determine the time at which the ball pass a point 25.0 m above the point of contact between the bat and ball.
(d.) Explain why there are two answers to part c.

Accepted Answer

(a.)3.06 s
(b.)45.9 m
(c.)0.99

Question 4

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?

Accepted Answer

A)  0.52 s 
B)  1.2 s 
C)  2.4 s 
D)  3.1 s 
E)  4.2 s 
A)  0.52 s 
B)  1.2 s 
C)  2.4 s 
D)  3.1 s 
E)  4.2 s

Question 5

An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2 To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the depth of the crater is 120 m, how long does it take for the rock to fall?

Accepted Answer

A)  3.04 s 
B)  12.2 s 
C)  29.3 s 
D)  32.1 s 
E)  37.5 s 
A)  3.04 s 
B)  12.2 s 
C)  29.3 s 
D)  32.1 s 
E)  37.5 s

Question 6

Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s. How long does it take for them to meet?

Accepted Answer

The answer of Arthur and Betty start walking toward each...

Question 7

Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John stays in the air

Accepted Answer

A)  0.50 times as long. 
B)  1.41 times as long. 
C)  twice as long. 
D)  three times as long. 
E)  four times as long. 
A)  0.50 times as long. 
B)  1.41 times as long. 
C)  twice as long. 
D)  three times as long. 
E)  four times as long.

Question 8

FIGURE 2-4  
-Figure 2-4 represents the velocity of a particle as it travels along the x-axis. At what value of t is the instantaneous acceleration equal to zero m/s2?

Accepted Answer

Question 9

A car is making a 12-mile trip. It travels the first 6.0 miles at 30 miles per hour and the last 6.0 miles at 60 miles per hour. What is the car's average speed for the entire trip?

Accepted Answer

A)  20 mph 
B)  35 mph 
C)  40 mph 
D)  45 mph 
E)  50 mph 
A)  20 mph 
B)  35 mph 
C)  40 mph 
D)  45 mph 
E)  50 mph

Question 10

A car is making a 12-mile trip. It travels the first 8.0 miles at 30 miles per hour and the last 4.0 miles at 60 miles per hour. What is the car's average speed for the entire trip?

Accepted Answer

A)  36 mph 
B)  40 mph 
C)  44 mph 
D)  48 mph 
E)  52 mph 
A)  36 mph 
B)  40 mph 
C)  44 mph 
D)  48 mph 
E)  52 mph

Question 11

Two cars are traveling at the same speed and hit the brakes at the same time. One car has double the deceleration of the other. By what factor does the time required to stop that car compare with that for the other car?

Accepted Answer

It takes h

Question 12

FIGURE 2-6  
-Refer to Figure 2-6. If you start from the Bakery, travel to the Cafe, and then to the Art Gallery, what is the magnitude of your displacement?

Accepted Answer

A)  6.5 km 
B)  2.5 km 
C)  10.5 km 
D)  9.0 km 
E)  1.5 km 
A)  6.5 km 
B)  2.5 km 
C)  10.5 km 
D)  9.0 km 
E)  1.5 km

Question 13

FIGURE 2-7  
-Figure 2-7 represents the position of a particle as it travels along the x-axis. What is the magnitude of the average velocity of the particle between t = 1 s and t = 4 s?

Accepted Answer

A)  0.25 m/s 
B)  0.50 m/s 
C)  0.67 m/s 
D)  1.0 m/s 
E)  1.3 m/s 
A)  0.25 m/s 
B)  0.50 m/s 
C)  0.67 m/s 
D)  1.0 m/s 
E)  1.3 m/s

Question 14

If the position versus time graph of an object is a horizontal line, the object is

Accepted Answer

A)  moving with constant non-zero speed. 
B)  moving with constant non-zero acceleration. 
C)  at rest. 
D)  moving with infinite speed. 
E)  none of the above 
A)  moving with constant non-zero speed. 
B)  moving with constant non-zero acceleration. 
C)  at rest. 
D)  moving with infinite speed. 
E)  none of the above

Question 15

FIGURE 2-6  
-Refer to Figure 2-6. If you start from the Bakery, travel to the Cafe, and then to the Art Gallery, what is the distance you have traveled?

Accepted Answer

A)  6.5 km 
B)  2.5 km 
C)  10.5 km 
D)  0 km 
E)  1.5 km 
A)  6.5 km 
B)  2.5 km 
C)  10.5 km 
D)  0 km 
E)  1.5 km

Question 16

A car traveling with velocity v is decelerated by a constant acceleration of magnitude a. It travels a distance d before coming to rest. If its initial velocity were doubled, the distance required to stop would

Accepted Answer

A)  double as well. 
B)  decrease by a factor of two. 
C)  stay the same. 
D)  quadruple. 
E)  decrease by a factor of four. 
A)  double as well. 
B)  decrease by a factor of two. 
C)  stay the same. 
D)  quadruple. 
E)  decrease by a factor of four.

Question 17

An object is thrown upwards with a speed of 14 m/s. How high above the projection point is it after 0.50 s?

Accepted Answer

A)  0 m 
B)  2.9 m 
C)  5.8 m 
D)  7.0 m 
E)  8.2 m 
A)  0 m 
B)  2.9 m 
C)  5.8 m 
D)  7.0 m 
E)  8.2 m

Question 18

In a relay race, runner A is carrying the baton and has a speed of 2.8 m/s. When he is 25 m behind the starting line, runner B starts from rest and accelerates at 0.080 m/s2. How fast is B traveling when A overtakes her?

Accepted Answer

A)  0.10 m/s 
B)  0.33 m/s 
C)  0.84 m/s 
D)  2.0 m/s 
E)  Runner A never catches up. 
A)  0.10 m/s 
B)  0.33 m/s 
C)  0.84 m/s 
D)  2.0 m/s 
E)  Runner A never catches up.

Question 19

FIGURE 2-2  
-Figure 2-2 represents the position of a particle as it travels along the x-axis. What is the average velocity of the particle between t = 2 s and t = 4 s?

Accepted Answer

The answer of FIGURE 2-2  
-Figure 2-2 represents the...

Question 20

Suppose a ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is going up.

Accepted Answer

A)  Both its velocity and its acceleration point upward. 
B)  Its velocity points upward and its acceleration points downward. 
C)  Its velocity points downward and its acceleration points upward. 
D)  Both its velocity and its acceleration points downward. 
E)  Neither velocity nor acceleration can be determined without additional information. 
A)  Both its velocity and its acceleration point upward. 
B)  Its velocity points upward and its acceleration points downward. 
C)  Its velocity points downward and its acceleration points upward. 
D)  Both its velocity and its acceleration points downward. 
E)  Neither velocity nor acceleration can be determined without additional information.

Exam 2: One-Dimensional Kinematics

Suppose that an object is moving with constant acceleration. Which of the following is an accurate statement concerning its motion?

The area under a curve in a velocity versus time graph gives

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?

An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2 To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the depth of the crater is 120 m, how long does it take for the rock to fall?

Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s. How long does it take for them to meet?

Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John stays in the air

FIGURE 2-4 -Figure 2-4 represents the velocity of a particle as it travels along the x-axis. At what value of t is the instantaneous acceleration equal to zero m/s2?

A car is making a 12-mile trip. It travels the first 6.0 miles at 30 miles per hour and the last 6.0 miles at 60 miles per hour. What is the car's average speed for the entire trip?

A car is making a 12-mile trip. It travels the first 8.0 miles at 30 miles per hour and the last 4.0 miles at 60 miles per hour. What is the car's average speed for the entire trip?

Two cars are traveling at the same speed and hit the brakes at the same time. One car has double the deceleration of the other. By what factor does the time required to stop that car compare with that for the other car?

FIGURE 2-6 -Refer to Figure 2-6. If you start from the Bakery, travel to the Cafe, and then to the Art Gallery, what is the magnitude of your displacement?

FIGURE 2-7 -Figure 2-7 represents the position of a particle as it travels along the x-axis. What is the magnitude of the average velocity of the particle between t = 1 s and t = 4 s?

If the position versus time graph of an object is a horizontal line, the object is

FIGURE 2-6 -Refer to Figure 2-6. If you start from the Bakery, travel to the Cafe, and then to the Art Gallery, what is the distance you have traveled?

A car traveling with velocity v is decelerated by a constant acceleration of magnitude a. It travels a distance d before coming to rest. If its initial velocity were doubled, the distance required to stop would

An object is thrown upwards with a speed of 14 m/s. How high above the projection point is it after 0.50 s?

In a relay race, runner A is carrying the baton and has a speed of 2.8 m/s. When he is 25 m behind the starting line, runner B starts from rest and accelerates at 0.080 m/s2. How fast is B traveling when A overtakes her?

FIGURE 2-2 -Figure 2-2 represents the position of a particle as it travels along the x-axis. What is the average velocity of the particle between t = 2 s and t = 4 s?

Suppose a ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is going up.

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 Potential Energy

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

Quantum Physics

Atomic Physics

Nuclear Physics and Nuclear Radiation

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An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s² To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the depth of the crater is 120 m, how long does it take for the rock to fall?

FIGURE 2-4 -Figure 2-4 represents the velocity of a particle as it travels along the x-axis. At what value of t is the instantaneous acceleration equal to zero m/s²?

In a relay race, runner A is carrying the baton and has a speed of 2.8 m/s. When he is 25 m behind the starting line, runner B starts from rest and accelerates at 0.080 m/s². How fast is B traveling when A overtakes her?