Question 1

2-4
A ball is shot straight up from the surface of the earth with an initial speed of 19.6 m/s.
Neglect any effects due to air resistance.
-What maximum height will the ball reach?

Accepted Answer

A)  9.80 m
B)  14.7 m
C)  19.6 m
D)  24.5 m
E)  58.8 m C

Question 2

2-7
An object is moving along a straight line.The graph shows the object's position from the starting point as a function of time. 
-In which segment(s) of the graph does the object's average velocity (measured from t = 0 s) decrease with time?

Accepted Answer

A)  AB only
B)  BC only
C)  DE only
D)  AB and CD
E)  BC and DE E

Question 3

A particle travels along a curved path between two points P and Q as shown.The displacement of the particle does not depend on

Accepted Answer

A)  the location of P.
B)  the location of Q.
C)  the distance traveled from P to Q.
D)  the shortest distance between P and Q.
E)  the direction of Q from P. C

Question 4

Carl Lewis set a world record for the 100.0-m run with a time of 9.86 s.If, after reaching the finish line, Mr.Lewis walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0 m?

Accepted Answer

A)  0 m/s
B)  1.10 m/s
C)  1.98 m/s
D)  5.60 m/s
E)  10.1 m/s

Question 5

2-3
An object starts from rest and accelerates uniformly in a straight line in the positive x direction.
After 11 seconds, its speed is 70.0 m/s.
-What is the average velocity of the object during the first 11 seconds?

Accepted Answer

A)  +3.6 m/s
B)  +6.4 m/s
C)  +35 m/s
D)  +72 m/s
E)  -140 m/s

Question 6

2-12
A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters.
-How long would it take the object, falling from rest, to fall 16 m on this planet?

Accepted Answer

A)  0.8 s
B)  1.1 s
C)  2.5 s
D)  3.5 s
E)  22 s

Question 7

2-11
Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 4 m/sS1U1P12S1S1P0.
-Which statement accurately describes the motion of the particle?

Accepted Answer

A)  The particle travels 4 meters during each second.
B)  The particle travels 4 meters during the first second only.
C)  The speed of the particle increases by 4 m/s during each second.
D)  The acceleration of the particle increases by 4 m/s2 during each second.
E)  The final velocity of the particle will be proportional to the distance that the particle covers.

Question 8

2-12
A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters.
-Determine the speed of the object after falling from rest through 16 m on this planet.

Accepted Answer

A)  28 m/s
B)  32 m/s
C)  56 m/s
D)  64 m/s
E)  320 m/s

Question 9

How far does the object move in the interval from t = 0 to t = 2 s?

Accepted Answer

A)  7.5 m
B)  10 m
C)  15 m
D)  20 m
E)  25 m

Question 10

A body initially at rest is accelerated at a constant rate for 5.0 seconds in the positive x direction.If the final speed of the body is 20.0 m/s, what was the body's acceleration?

Accepted Answer

A)  0.25 m/s2
B)  2.0 m/s2
C)  4.0 m/s2
D)  9.8 m/s2
E)  1.6 m/s2

Question 11

2-13
A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
-How long does it take the ball to reach its maximum height?

Accepted Answer

A)  2.0 s
B)  2.3 s
C)  4.0 s
D)  4.6 s
E)  8.0 s

Question 12

When the outdoor emergency warning siren at Cheryl's school was tested, the sound from the siren took 7.0 s to reach her house located 2.40 km from the school.What is the speed of sound in air?

Accepted Answer

A)  240 m/s
B)  340 m/s
C)  440 m/s
D)  540 m/s
E)  640 m/s

Question 13

After 10 seconds, how far will the particle have traveled?

Accepted Answer

A)  20 m
B)  40 m
C)  100 m
D)  200 m
E)  400 m

Question 14

2-3
An object starts from rest and accelerates uniformly in a straight line in the positive x direction.
After 11 seconds, its speed is 70.0 m/s.
-Ball A is dropped from rest from a window.At the same instant, ball B is thrown downward; and ball C is thrown upward from the same window.Which statement concerning the balls after their release is necessarily true if air resistance is neglected?

Accepted Answer

A)  At some instant after it is thrown, the acceleration of ball C is zero.
B)  All three balls strike the ground at the same time.
C)  All three balls have the same velocity at any instant.
D)  All three balls have the same acceleration at any instant.
E)  All three balls reach the ground with the same velocity.

Question 15

Ryan throws a tennis ball vertically upward.The ball returns to the point of release after 3.5 s.What is the speed of the ball as it is released?

Accepted Answer

A)  0 m/s
B)  14 m/s
C)  17 m/s
D)  21 m/s
E)  34 m/s

Question 16

Starting from rest, a particle that is confined to move along a straight line is accelerated at a rate of 5.0 m/s2.Which statement concerning the slope of the position versus time graph for this particle is true?

Accepted Answer

A)  The slope has a constant value of 5.0 m/s.
B)  The slope has a constant value of 5.0 m/s2.
C)  The slope is both constant and negative.
D)  The slope is not constant and increases with increasing time.
E)  The slope is not constant and decreases with increasing time.

Question 17

A landing airplane makes contact with the runway with a speed of 75.0 m/s and moves toward the south.After 18.5 seconds, the airplane comes to rest.What is the average acceleration of the airplane during the landing?

Accepted Answer

A)  2.11 m/s2, north
B)  2.11 m/s2, south
C)  4.05 m/s2, north
D)  4.05 m/s2, south
E)  14.3 m/s2, north

Question 18

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$r.
-Which one of the following statements concerning this car is true?

Accepted Answer

A)  The displacement of the car does not change with time.
B)  The instantaneous velocity of the car is constant.
C)  The average speed of the car is the same over any time interval.
D)  The average velocity of the car is the same over any time interval.
E)  The average speed of the car over any time interval is equal to the magnitude of the average velocity over the same time interval.

Question 19

A car is moving at a constant velocity when it is involved in a collision.The car comes to rest after 0.450 s with an average acceleration of 60.0 m/s2 in the direction opposite that of the car's velocity.What was the speed, in km/h, of the car before the collision?

Accepted Answer

A)  29.2 km/h
B)  44.8 km/h
C)  97.2 km/h
D)  105 km/h
E)  144 km/h

Question 20

A car is stopped at a red traffic light.When the light turns to green, the car has a constant acceleration and crosses the 9.10-m intersection in 2.86 s.What is the magnitude of the car's acceleration?

Accepted Answer

A)  1.77 m/s2
B)  2.98 m/s2
C)  2.23 m/s2
D)  7.36 m/s2
E)  9.80 m/s2

Exam 2: Kinematics in One Dimension

2-4 A ball is shot straight up from the surface of the earth with an initial speed of 19.6 m/s. Neglect any effects due to air resistance. -What maximum height will the ball reach?

2-7 An object is moving along a straight line.The graph shows the object's position from the starting point as a function of time. -In which segment(s) of the graph does the object's average velocity (measured from t = 0 s) decrease with time?

A particle travels along a curved path between two points P and Q as shown.The displacement of the particle does not depend on

Carl Lewis set a world record for the 100.0-m run with a time of 9.86 s.If, after reaching the finish line, Mr.Lewis walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0 m?

2-3 An object starts from rest and accelerates uniformly in a straight line in the positive x direction. After 11 seconds, its speed is 70.0 m/s. -What is the average velocity of the object during the first 11 seconds?

2-12 A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters. -How long would it take the object, falling from rest, to fall 16 m on this planet?

2-11 Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 4 m/s². -Which statement accurately describes the motion of the particle?

2-12 A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters. -Determine the speed of the object after falling from rest through 16 m on this planet.

How far does the object move in the interval from t = 0 to t = 2 s?

A body initially at rest is accelerated at a constant rate for 5.0 seconds in the positive x direction.If the final speed of the body is 20.0 m/s, what was the body's acceleration?

2-13 A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s. -How long does it take the ball to reach its maximum height?

When the outdoor emergency warning siren at Cheryl's school was tested, the sound from the siren took 7.0 s to reach her house located 2.40 km from the school.What is the speed of sound in air?

After 10 seconds, how far will the particle have traveled?

Ryan throws a tennis ball vertically upward.The ball returns to the point of release after 3.5 s.What is the speed of the ball as it is released?

Starting from rest, a particle that is confined to move along a straight line is accelerated at a rate of 5.0 m/s².Which statement concerning the slope of the position versus time graph for this particle is true?

A landing airplane makes contact with the runway with a speed of 75.0 m/s and moves toward the south.After 18.5 seconds, the airplane comes to rest.What is the average acceleration of the airplane during the landing?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$ r. -Which one of the following statements concerning this car is true?

A car is moving at a constant velocity when it is involved in a collision.The car comes to rest after 0.450 s with an average acceleration of 60.0 m/s² in the direction opposite that of the car's velocity.What was the speed, in km/h, of the car before the collision?

A car is stopped at a red traffic light.When the light turns to green, the car has a constant acceleration and crosses the 9.10-m intersection in 2.86 s.What is the magnitude of the car's acceleration?

Exam 2: Kinematics in One Dimension

2-4 A ball is shot straight up from the surface of the earth with an initial speed of 19.6 m/s. Neglect any effects due to air resistance. -What maximum height will the ball reach?

2-7 An object is moving along a straight line.The graph shows the object's position from the starting point as a function of time. -In which segment(s) of the graph does the object's average velocity (measured from t = 0 s) decrease with time?

A particle travels along a curved path between two points P and Q as shown.The displacement of the particle does not depend on

Carl Lewis set a world record for the 100.0-m run with a time of 9.86 s.If, after reaching the finish line, Mr.Lewis walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0 m?

2-3 An object starts from rest and accelerates uniformly in a straight line in the positive x direction. After 11 seconds, its speed is 70.0 m/s. -What is the average velocity of the object during the first 11 seconds?

2-12 A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters. -How long would it take the object, falling from rest, to fall 16 m on this planet?

2-11 Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 4 m/s2. -Which statement accurately describes the motion of the particle?

2-12 A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters. -Determine the speed of the object after falling from rest through 16 m on this planet.

How far does the object move in the interval from t = 0 to t = 2 s?

A body initially at rest is accelerated at a constant rate for 5.0 seconds in the positive x direction.If the final speed of the body is 20.0 m/s, what was the body's acceleration?

2-13 A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s. -How long does it take the ball to reach its maximum height?

When the outdoor emergency warning siren at Cheryl's school was tested, the sound from the siren took 7.0 s to reach her house located 2.40 km from the school.What is the speed of sound in air?

After 10 seconds, how far will the particle have traveled?

Ryan throws a tennis ball vertically upward.The ball returns to the point of release after 3.5 s.What is the speed of the ball as it is released?

Starting from rest, a particle that is confined to move along a straight line is accelerated at a rate of 5.0 m/s2.Which statement concerning the slope of the position versus time graph for this particle is true?

A landing airplane makes contact with the runway with a speed of 75.0 m/s and moves toward the south.After 18.5 seconds, the airplane comes to rest.What is the average acceleration of the airplane during the landing?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 π\piπ r. -Which one of the following statements concerning this car is true?

A car is moving at a constant velocity when it is involved in a collision.The car comes to rest after 0.450 s with an average acceleration of 60.0 m/s2 in the direction opposite that of the car's velocity.What was the speed, in km/h, of the car before the collision?

A car is stopped at a red traffic light.When the light turns to green, the car has a constant acceleration and crosses the 9.10-m intersection in 2.86 s.What is the magnitude of the car's acceleration?

2-11 Starting from rest, a particle confined to move along a straight line is accelerated at a rate of 4 m/s². -Which statement accurately describes the motion of the particle?

Starting from rest, a particle that is confined to move along a straight line is accelerated at a rate of 5.0 m/s².Which statement concerning the slope of the position versus time graph for this particle is true?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$ r. -Which one of the following statements concerning this car is true?

A car is moving at a constant velocity when it is involved in a collision.The car comes to rest after 0.450 s with an average acceleration of 60.0 m/s² in the direction opposite that of the car's velocity.What was the speed, in km/h, of the car before the collision?