08_U9 Test-1

# 08_U9 Test-1 - Name Date Pd Unit IX Test v1 For each of the...

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Name Date Pd Unit IX: Test - v1 For each of the situations outlined below in questions 1-4 compare (a>b, a<b, or a=b) the momentum of sphere A and sphere B. Then offer a brief explanation supporting your response. 6. A rifle recoils while firing a bullet. The speed of the rifle's recoil is small because the a. force against the rifle is small compared to the force on the bullet. b. speed is mainly concentrated in the bullet. c. rifle has lots of mass. d. momentum of the rifle is unchanged. e. none of these ©Modeling Workshop Project 2002 1 Unit IX Test 1 v2.0

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__7. In order to catch a ball, a baseball player moves his or her hand backward in the direction of the ball's motion. Doing this reduces the force of impact on the player's hand principally because it a. increases the impact time. b. decreases the impulse on the glove. c. decreases the change in momentum of the ball. d. all of the above e. none of the above __8. A 1.0 kg chunk of putty moving at 1.0 m/s collides and sticks to a 5 kg bowling ball that is initially at rest.
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