After falling from a height h and striking the ground twice, a ball rise up to the height [e = coefficient of restitution]

A small metal spehre is released from a height of 2m. After striking the ground, it rises to a height of 1.28 m. What is the coefficient of restitution?

A rubber ball drops from a height 'h'. After rebounding twice from the ground, it rises to h//2 . The co-efficient of restitution is

A ball is let fall from a height h. It makes n collisions with the earth. After n collisions it rebounds with a velocity v_(n) and the ball rises to a height h_(n) then coefficient of restitution is given by

A ball falls on the ground from a height of 2.0 m and rebounds up to a height of 1.5 m. Find the coefficient of restitution.

A metal ball falls from a height of 1m on to a steel plate and jumps upto a height of 81 cm. The coefficient of restitution of the ball and steel plate is

A metal ball falls from a height of 1m on to a steel plate and jumps upto a height of 81 cm. The coefficient of restitution of the ball and steel plate is