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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 10 - COM, Momentum and Collision > A ball of mass m is dropped onto a floor from a certain height. The collision is perfectly elastic and the ball rebounds to the same height and again falls. The average force exerted by the ball on the floor during a long time interval is

A ball of mass m is dropped onto a floor from a certain height. The collision is perfectly elastic and the ball rebounds to the same height and again falls. The average force exerted by the ball on the floor during a long time interval is

A particle of mass m moving with kinetic energy K makes a head - on elastic collision with a stationary particle of mass ηm. The maximum potential energy stored in the system during the collision is