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A ball at rest is dropped from a height of 12 m. It looses $25 \%$ of its Kinetic energy on striking the ground and bounces back to a height 'h'. Then value of 'h' is

\[(a)\;3\;m \quad (b)\;6\;m \quad (c)\;9\;m \quad (d)\;12\;m\]

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(c) 9m
answered Nov 7, 2013 by pady_1

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