A ball is thrown vertically down from a height of 40m from the ground with an initial velocity ‘v’. The ball hits the ground , loses 1^{rd}/3 of its total mechanical energy and rebounds back to the same height. If the acceleration due to gravity is 10ms^{-2} ,the value of ‘v’ is

AP EAMCET Engineering 2016 Code C Paper

Section: Physics

Question : 101 of 160

Marks: +1, -0

A ball is thrown vertically down from a height of 40m from the ground with an initial velocity ‘v’. The ball hits the ground , loses

1rd

of its total mechanical energy and rebounds back to the same height. If the acceleration due to gravity is 10ms−2 ,the value of ‘v’ is

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