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16-11-2022
Physics

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a rubber ball is dropped and bounces vertically from a horizontal concrete floor. if the ball has a speed of 3.0 m/s just before striking the floor and a speed of 2.5 m/s just after bounc- ing, what is the average force of the floor on the ball? assume the ball is in contact with the floor for 0.12 s and the mass of the ball is 0.15 kg.

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