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posted by antiah on Thursday, January 12, 2012 at 7:07pm.
a ball of mass 1oog falls from a height of 5m onto a floor and rebounds to a height of 3m . what energy is lost as a result of the impact on the floor ?
E = PE = mgh = 0.1kg * 9.8 N./kg * 5 = 4.9 Joules.
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