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A ball falls undal gravity from a height...

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.

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The correct Answer is:
`"["14m//s,10m"]"`
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PHYSICS GALAXY - ASHISH ARORA-LINEAR MOMENTUM & ITS CONSERVATION-unsolved
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