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Unformatted text preview: This means that it has some momentum in the upward direction after it hits the floor. The change in momentum is just the vector difference in these two momenta. Because the vectors are in opposite directions, the size of the momentum change is the sum of the two sizes and therefore bigger than for the ball that did not bounce. Therefore the impulse on the ball that bounces is also greater. Exercise 8. The impulse acting on the ball is equal to the change in momentum experienced by the ball. ( 29 ( 29 ( 29 0.5 kg 6 m s 3 N s F t mv = =-= - This impulse acts in the upward direction as indicated by the minus sign. (I chose the downward direction to be positive.) If the ball had bounced, it would have experienced a greater change in momentum (as explained in Question 14), which requires a greater impulse....
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- Fall '02