Unit 7: Momentum Test Review Question Preview (ID: 16561)


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Two cars collide head-on. If the Toyota’s momentum before the crash is 200 kg*m/s and the BMW’s momentum is -500 kg*m/s, which direction will the cars move after the crash?
a) The cars will move in opposite directions.
b) The cars will stop immediately.
c) The cars will move in the direction that the BMW was traveling (negative).
d) The cars will move in the direction that the Toyota was traveling (positive).

Two cars collide head-on. If the Honda’s momentum before the crash is 600 kg*m/s and the Ferrari’s momentum is -300 kg*m/s, which direction will the cars move after the crash?
a) The cars will move in opposite directions.
b) The cars will stop immediately.
c) The cars will move in the direction that the Ferrari was traveling (negative).
d) The cars will move in the direction that the Honda was traveling (positive).

A 5-N baseball and a 3-N basketball are rolling along a level, straight road. The balls have the same momentum. What physical information can you assume about the mass or motion of the balls?
a) The balls move at same velocity.
b) The baseball moves faster.
c) The basketball moves faster.
d) The mass of the balls is the same.

A 2-N golf ball and a 1-N tennis ball are rolling along a level, straight road. The balls have the same momentum. What physical information can you assume about the mass or motion of the balls?
a) The balls move at same velocity.
b) The golf ball moves faster.
c) The tennis ball moves faster.
d) The mass of the balls is the same.

The formula for momentum is:
a) p=mv
b) m=pv
c) m=ws
d) p=ma

A 1000-kg car and a 4000-kilogram truck have the same momentum. Select the statement that must be true about their velocities.
a) The car and truck are moving at the same velocity.
b) The car and truck are at rest.
c) The car’s velocity is 4 times greater than the truck’s velocity.
d) The truck’s velocity is 4 times greater than the car’s velocity.

A racecar and a tank are traveling down a straight road. The tank is 10 times as massive as the racecar. The vehicles have the same momentum. Select the statement below that must be true.
a) The racecar and the tank are traveling at the same velocity.
b) The racecar is traveling faster than the tank.
c) The racecar is traveling slower than the tank.
d) The racecar is traveling in the opposite direction of the tank.

A garbage truck and an ambulance are traveling down a straight road. The garbage truck is 2 times as massive as the ambulance. The vehicles have the same momentum. Select the statement below that must be true.
a) The garbage truck and the ambulance are traveling at the same velocity.
b) The garbage truck is traveling faster than the ambulance.
c) The garbage truck is traveling slower than the ambulance.
d) The garbage truck is traveling in the opposite direction of the ambulance.

Cart A on a track travels with a momentum of 4 kg*m/s before striking Cart B. Cart B is at rest prior to the perfectly elastic collision. The momentum of the carts after the collision will be:
a) Cart A’s momentum will be 4 kg*m/s. Cart B’s momentum will be 4 kg*m/s.
b) Cart A’s momentum will be 0 kg*m/s. Cart B’s momentum will be 4 kg*m/s.
c) Cart A’s momentum will be 4 kg*m/s. Cart B’s momentum will be 0 kg*m/s.
d) Cart A’s momentum will be 2 kg*m/s. Cart B’s momentum will be 2 kg*m/s.

A pool player hits the cue ball so that it travels with a momentum of 5 kg*m/s striking a purple ball. The purple ball is at rest prior to the perfectly elastic collision. The momentum of the balls after the collision will be:
a) The cue ball’s momentum will be 5 kg*m/s. The purple ball’s momentum will be 5 kg*m/s.
b) The cue ball’s momentum will be 0 kg*m/s. The purple ball’s momentum will be 5 kg*m/s.
c) The cue ball’s momentum will be 5 kg*m/s. The purple ball’s momentum will be 0 kg*m/s.
d) The cue ball’s momentum will be 2.5 kg*m/s. The purple ball’s momentum will be 2.5 kg*m/s.

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