AP EAMCET Engineering 22 Apr 2019 Shift 2 Paper

A ball dropped from a building of height 12 m falls oil a slab of 1 m height from the ground and makes a perfect elastic collision. Later the ball falls on a wooden table of height 0.5 m. makes inelastic collision and falls on the ground. If the coefficient of restitution between the ball and the table is 0.5. then the velocity of the ball while touching the ground is about
(Acceleration due to gravity = 10 ms−2)