Question 1

The impulse-momentum relationship is a direct result of

Accepted Answer

A)  Newton's 1st law.
B)  Newton's 2nd law.
C)  Newton's 3rd law.
D)  Newton's law of gravity.

Question 2

A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the

Accepted Answer

A)  force against the cannon is smaller than against the ball.
B)  momentum is mainly concentrated in the cannonball.
C)  cannon has much more mass than the cannonball.
D)  momentum of the cannon is smaller.

Question 3

A red car has a head-on collision with an approaching blue car with the same magnitude of momentum. A green car driving with the same momentum as the other cars collides with an enormously massive wall. Which of the three cars will experience the greatest impulse?

Accepted Answer

A)  red car
B)  blue car
C)  green car
D)  all the same

Question 4

Consider massive gliders that slide friction-free along a horizontal air track. Glider A has a mass of 1 kg, a speed of 1 m/s, and collides with Glider B that has a mass of 5 kg and is at rest. If they stick upon collision, their speed after collision will be

Accepted Answer

A)  1/4 m/s.
B)  1/5 m/s.
C)  1/6 m/s.
D)  1 m/s.
E)  none of the above

Question 5

An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will

Accepted Answer

A)  move in the opposite direction at 20 m/s.
B)  move in the opposite direction at a lower speed.
C)  move in the opposite direction at a higher speed.
D)  none of the above

Question 6

A sandbag motionless in outer space is hit by a three-times-as massive sandbag moving at 12 m/s. They stick together and move at a speed of

Accepted Answer

A)  3 m/s.
B)  4 m/s.
C)  6 m/s.
D)  8 m/s.
E)  none of the above

Question 7

When Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard, the speed of the skateboard

Accepted Answer

A)  decreases.
B)  increases.
C)  neither decreases nor increases.

Question 8

When you jump from an elevated position you usually bend your knees upon reaching the ground, which makes the time of the contact about 10 times that of a stiff-legged landing. In this way the average force your body experiences is

Accepted Answer

A)  less than 1/10 as great.
B)  more than 1/10 as great.
C)  about 1/10 as great.
D)  about 10 times as great.

Question 9

The mass of a ball moving at 3 m/s with a momentum of 48 kg m/s is

Accepted Answer

A)  4 kg.
B)  12 kg.
C)  16 kg.
D)  144 kg.
E)  none of these

Question 10

When a boxer is moving away from a punch, the force experienced is reduced because

Accepted Answer

A)  momentum transfer is reduced.
B)  the time of contact is increased.
C)  the force is less effective.
D)  all of the above

Question 11

If several balls are thrown straight up with different initial speeds, the quantity that will have the same value along their paths is their

Accepted Answer

A)  initial momentum.
B)  maximum height.
C)  time of travel.
D)  acceleration.
E)  none of the above

Exam 6: Momentum

A red car has a head-on collision with an approaching blue car with the same magnitude of momentum. A green car driving with the same momentum as the other cars collides with an enormously massive wall. Which of the three cars will experience the greatest impulse?

Correct Answer
verified

When you jump from an elevated position you usually bend your knees upon reaching the ground, which makes the time of the contact about 10 times that of a stiff-legged landing. In this way the average force your body experiences is

Correct Answer
verified

The mass of a ball moving at 3 m/s with a momentum of 48 kg m/s is

Correct Answer
verified

If several balls are thrown straight up with different initial speeds, the quantity that will have the same value along their paths is their

Correct Answer
verified

When Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard, the speed of the skateboard

Correct Answer
verified

When a boxer is moving away from a punch, the force experienced is reduced because

Correct Answer
verified

An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will

Correct Answer
verified

Consider massive gliders that slide friction-free along a horizontal air track. Glider A has a mass of 1 kg, a speed of 1 m/s, and collides with Glider B that has a mass of 5 kg and is at rest. If they stick upon collision, their speed after collision will be

Correct Answer
verified

The impulse-momentum relationship is a direct result of

Correct Answer
verified

A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the

Correct Answer
verified

A sandbag motionless in outer space is hit by a three-times-as massive sandbag moving at 12 m/s. They stick together and move at a speed of

Correct Answer
verified

Exam 6: Momentum

A red car has a head-on collision with an approaching blue car with the same magnitude of momentum. A green car driving with the same momentum as the other cars collides with an enormously massive wall. Which of the three cars will experience the greatest impulse?

Correct AnswerverifiedShow Answer

When you jump from an elevated position you usually bend your knees upon reaching the ground, which makes the time of the contact about 10 times that of a stiff-legged landing. In this way the average force your body experiences is

Correct AnswerverifiedShow Answer

The mass of a ball moving at 3 m/s with a momentum of 48 kg m/s is

Correct AnswerverifiedShow Answer

If several balls are thrown straight up with different initial speeds, the quantity that will have the same value along their paths is their

Correct AnswerverifiedShow Answer

When Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard, the speed of the skateboard

Correct AnswerverifiedShow Answer

When a boxer is moving away from a punch, the force experienced is reduced because

Correct AnswerverifiedShow Answer

An astronaut floating alone in outer space throws a baseball. If the ball moves away at 20 m/s, the astronaut will

Correct AnswerverifiedShow Answer

Consider massive gliders that slide friction-free along a horizontal air track. Glider A has a mass of 1 kg, a speed of 1 m/s, and collides with Glider B that has a mass of 5 kg and is at rest. If they stick upon collision, their speed after collision will be

Correct AnswerverifiedShow Answer

The impulse-momentum relationship is a direct result of

Correct AnswerverifiedShow Answer

A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the

Correct AnswerverifiedShow Answer

A sandbag motionless in outer space is hit by a three-times-as massive sandbag moving at 12 m/s. They stick together and move at a speed of

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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