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A 50 gram tennis ball travelling 25 mph comes into contact with a tennis racket for 0.15 seconds. it leaves the tennis racket travelling in

A 50 gram tennis ball travelling 25 mph comes into contact with a tennis racket for 0.15 seconds. it leaves the tennis racket travelling in exactly the opposite direction with a velocity of 40 mph. what was the force exerted on the ball? give the answer in both units and pounds.

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