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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2015
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A ball is thrown vertically downwards from a height of 20m with an initial velocity v0. It collides with the ground, loses 50 percent of its energy in collision and rebounds to the same height. The initial velocity v0 is : (Take g = 10ms2)


( A ) 14ms1
( B ) 10ms1
( C ) 20ms1
( D ) 28ms1
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