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A 0.280 kg volleyball approaches a player horizontally with a speed of 15.0 m/s. The player
strikes the ball with her fist and causes the ball to move in the opposite direction with a speed
of 22.0 m/s.
a) what impulse is delivered to the ball by the player?
b) if the players fist is in contact with the ball for 0.600s, find the magnitude of the average
force exerted on the players' fist.

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