A ball falls under gravity from a hight of 10 m height of 10 m wioth an initial downward velocity u .If collides with the gound , loses `50%` of its energy in collision and then rises back back to the same heighrt .Find the initial velocity u.

A ball falls under gravity from a height of 10 m with an initial downward velocity u. It collides with the ground, losses 50% of its energy in collision and then rises back to the same height. The initial velocity u is

A ball falls undal gravity from a height of 10m with an initial downward velocity u. It collides with ground, loses halft its energy and then rises back to the same height. Find the initial velocity u.

A ball is thrown vertically downwards from a height of 20m with an intial velocity v_(0) . It collides with the ground, loses 50% of its energy in collision and rebounds to the same height. The intial velocity v_(0) is (Take, g =10 ms^(-2) )

A ball is falling freely from a certain height. When it reached 10 m height from the ground its velocity is v_(0) . It collides with the horizontal ground and loses 50 % of its energy and rises back to height of 10 m . The value of velocity v_(0) is

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

A ball is thrown upwards, it takes 4 s to reach back to the ground. Find its initial velocity

A tennis ball is thrown from a height h with an initial downward velocity u. It rebounces back to the same height after losing half of its KE.The value of u is