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A rubber ball with a mass of 0.25 kg is dropped from a height of 1.5 m onto the floor. Just after bouncing from the floor, the ball has a

velocity of4.0 m/s (up]. (a) Determine the impulse imparted by the floor to the ball. (b) If the average force of the floor on the ball is18 N [up], for how long is the ball in contact with the floor? An archer shoots an arrow with a mass of 0.030 kg.The arrow leaves the bow with a horizontal velocity of 88 m/s. A (a) Determine the impulse imparted to the arrow. (b) If the arrow is in contact with the bowstring for 0.015 s after the archer releases, what is the approximate average force of the bowstring on the arrow?

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