Raju dropped a rubber ball of mass m from a height h to the ground . He observed that the ball rebounds vertically and along the same line to a height `h_1` which is less than h. Find the velocity with which it strikes the ground?

Raju dropped a rubber ball of mass m from a height h to the ground . He observed that the ball rebounds vertically and along the same line to a height h_1 which is less than h. If the rubber ball is allowed to fall on a spring placed on the ground then what change will Raju note is in the height of rebound?

A solid sphere of mass m and radius R starts from rest and rolls down along an inclined plane of height h without slipping. Find the velocity when it reaches the base.

A balloon is ascending at the rate of 14ms^(-1) and at a height of 98m above the ground, a stone is dropped from it. a)State whether the motion of the balloon is accelerated or retarded? b)After how much time does the stone reach the ground? c)Determine the velocity with which the stone strikes the ground.