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A 2.0  kg ball is dropped from a height of 20  m onto a soft surface and rebounds to a height of 5.0  m . What is the magnitude of the impulse exerted on the ball by the floor?

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A 2.0  kg ball is dropped from a height of 20  m onto a soft surface and rebounds to a height of 5.0  m . What is the magnitude of the impulse exerted on the ball by the floor?
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