A person hit harder when he falls on a concrete floor than when he falls on a heap of sand from the same height. why ?
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A person hit harder when he falls on a concrete floor than when he falls on a heap of sand from the same height. why ?
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Answer:
Because On a hard surface he is brought to rest in a very short time, so greater force is called into play, whereas, on a heap of sand, he is brought to rest in a longer time, so lesser force is called into play.