A 0.329-kg volleyball approaches a player horizontally with a speed of 12.9 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?

kg·m/s

(b) If the player's fist is in contact with the ball for 0.0600 s, find the magnitude of the average force exerted on the player's fist.

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