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A ball of mass 1.74 kg is dropped from a height y1 = 1.47 m and then bounces back up to a height of y2 = 0.83 m. How much mechanical energy is lost in the bounce? The effect of air resistance has been experimentally found to be negligible in this case, and you can ignore it.
13 years ago

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Elena
ΔE = mgΔy =mg(y1-y2).
13 years ago

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