A ball is thrown vertically downwards from a height of 20 m

Last updated: 6/27/2023

A ball is thrown vertically downwards from a height of 20 m with an initial velocity v It collides with the ground loses 50 of its energy in collision and rebounds to the same height The initial velocity v is Take g 10 m s INEET 2015 1 28 ms 2 10 ms 3 14 ms 4 20 ms