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A ball of mass 2.25 kg is released from rest at height 5.29 m above the...

A ball of mass 2.25 kg is released from rest at height 5.29 m above the floor. It falls, hits the ground, and rebounds to height 3.19 m above the floor. Assume none of the losses are due to air friction. Find the impulse, in N-s, exerted by the floor on the ball. The sign of your answer will give the direction of the impulse.
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