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Physics 16 Online
OpenStudy (rishabh.mission):

A ball of mass m bounces back b/w two surfaces with a speed u . a) find the average force on each wall. b) If one surface slowly move toward the other with a speed of v <<<< u .find the force exerted by the ball on moving surface .the gravity is neglected & the collision is perfectly elastic.

OpenStudy (rishabh.mission):

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