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4 Dec 2020
A ball is thrown vertically downwards from a height of 20m with an initial velocity 
. It collides with the ground, losses 50% of its energy in a collision, and rebounds to the same height. The initial velocity is__. Take 
A ball is thrown vertically downwards from a height of 20m with an initial velocity . It collides with the ground, losses 50% of its energy in a collision, and rebounds to the same height. The initial velocity is__. Take
Uttam SaikiaLv10
4 Dec 2020
