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20 December, 00:54

A 0.45-kilogram football traveling at a speed of 22 meters per second is caught by an 84-kilogram stationary receiver. if the football comes to rest in the receiver's arms, the magnitude of the impulse imparted to the receiver by the ball is

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  1. 20 December, 02:37
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    Impulse = Change in momentum.

    The ball was moving with a momentum of 0.45 * 22 = 9.9

    The ball comes to rest in the receivers arm; this means the ball's final velocity = 0. So mv2 = 0.45 * 0

    The magnitude of the impact is just the change in momentum. 9.9 - (0.45 * 0) = 9.9
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