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Questions and Answers
Which of the following is the final velocity of ball A after the collision?
Which of the following is the final velocity of ball A after the collision?
- 3.0 m/s
- 5.0 m/s
- 4.0 m/s
- -3.0 m/s (correct)
What is the change in momentum of ball A and ball B after the collision?
What is the change in momentum of ball A and ball B after the collision?
- 3.35 kg·m/s and -3.35 kg·m/s (correct)
- -4.35 kg·m/s and 4.35 kg·m/s
- 4.35 kg·m/s and -4.35 kg·m/s
- -3.35 kg·m/s and 3.35 kg·m/s
What is the average force on ball B during the collision?
What is the average force on ball B during the collision?
- 2600 N
- 3200 N
- 3000 N
- 2800 N (correct)
What is the velocity of the combined masses just after the impact of the rocket and the armored car?
What is the velocity of the combined masses just after the impact of the rocket and the armored car?
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What is the change in momentum of the car during the quick turn?
What is the change in momentum of the car during the quick turn?
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Study Notes
Collision and Momentum
- Final velocity of ball A after the collision is unknown and requires calculation
- Change in momentum of ball A and ball B after the collision can be calculated using the law of conservation of momentum
- Average force on ball B during the collision is related to the rate of change of momentum
Rocket and Armored Car Collision
- Velocity of the combined masses just after the impact of the rocket and the armored car can be calculated using the law of conservation of momentum
Car Turning
- Change in momentum of the car during the quick turn is related to the force exerted on the car and the time over which it is exerted
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