Momentum and Impulse Review

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1. Which has the greater mass - a heavy truck at rest or a rolling skateboard? Which has greater momentum? *

2 points

2. When the average force of impact on an object is extended in time, does this increase or decrease the impulse? *

1 point

3. What is the relationship between impulse and momentum? *

2 points

4. For a constant force, if the duration of impact upon an object is doubled, by how much is the impulse increased? By how much is the resulting change in momentum increased? *

2 points

5. If both the force that acts on an object and the time of impact are doubled, by how much is the impulse increased? By how much is the resulting change in momentum increased? *

2 points

6. In a car crash, why is it advantageous for an occupant to extend the time during which the collision is taking place? *

2 points

7. If the time of impact in a collision is extended by four times, by how much is the force of impact altered? *

2 points

8. Why is it advantageous for a boxer to ride with the punch? Why is it disadvantageous to move into an oncoming punch? *

2 points

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