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Unit 7: Momentum Test Review
Test Description: Momentum
Instructions: Answer all questions to get your test result.
1) 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 move in the direction that the Toyota was traveling (positive).
C
The cars will move in the direction that the BMW was traveling (negative).
D
The cars will stop immediately.
2) 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 move in the direction that the Ferrari was traveling (negative).
C
The cars will move in the direction that the Honda was traveling (positive).
D
The cars will stop immediately.
3) 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 baseball moves faster.
B
The mass of the balls is the same.
C
The basketball moves faster.
D
The balls move at same velocity.
4) 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 golf ball moves faster.
B
The balls move at same velocity.
C
The mass of the balls is the same.
D
The tennis ball moves faster.
5) The formula for momentum is:
A
m=pv
B
p=mv
C
m=ws
D
p=ma
6) 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 at rest.
B
The truck’s velocity is 4 times greater than the car’s velocity.
C
The car’s velocity is 4 times greater than the truck’s velocity.
D
The car and truck are moving at the same velocity.
7) 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 slower than the tank.
C
The racecar is traveling faster than the tank.
D
The racecar is traveling in the opposite direction of the tank.
8) 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 is traveling in the opposite direction of the ambulance.
B
The garbage truck is traveling slower than the ambulance.
C
The garbage truck is traveling faster than the ambulance.
D
The garbage truck and the ambulance are traveling at the same velocity.
9) 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 0 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 4 kg*m/s.
D
Cart A’s momentum will be 2 kg*m/s. Cart B’s momentum will be 2 kg*m/s.
10) 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 0 kg*m/s.
B
The cue ball’s momentum will be 2.5 kg*m/s. The purple ball’s momentum will be 2.5 kg*m/s.
C
The cue ball’s momentum will be 0 kg*m/s. The purple ball’s momentum will be 5 kg*m/s.
D
The cue ball’s momentum will be 5 kg*m/s. The purple ball’s momentum will be 5 kg*m/s.
*select an answer for all questions
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