(Answered) A soft tennis ball is dropped onto a hard floor from a

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A soft tennis ball is dropped onto a hard floor from a height of 1.55 m and rebounds to a height of 1.17 m. (Assume that the positive direction is upward.)

(a) Calculate its velocity just before it strikes the floor. _______ m/s ?

(b) Calculate its velocity just after it leaves the floor on its way back up._______ m/s ?

(d) How much did the ball compress during its collision with the floor, assuming the floor is absolutely rigid? ______ m?

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