Answer Happy

8. 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 compared to the bullet. D. momentum of the rifle is unchanged. E. none of these 9. 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 10. The momentum change of an object is equal to the A force acting on the object B. velocity change of the object. C. impulse acting on the object. D. mass of the object times the force acting on it.