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Why is a person hit harder when he falls on a concrete floor than when he falls on a heap of sand from the same height?
Wiki User
∙ 11y ago
It is because the the person has a certain amount of energy when he is falling. He has to dissipate all of the energy to come to a stop. The amount of energy absorbed by the contact is equal to the Force times the Distance. The sand allows the person to sink into it when he hits it so the sand requires less Force. When the person hits concrete he does not sink in very a very far distance (in fact it is the person that takes most of the deforming) and so it requires a much greater force to absorb the energy.
Annabel Jacobs
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Why is a person hit harder when he falls on a concrete floor than he falls on a heap of sand from the same height?
It is because the the person has a certain amount of energy when he is falling. He has to dissipate all of the energy to come to a stop. The amount of energy absorbed by the contact is equal to the Force times the Distance. The sand allows the person to sink into it when he hits it so the sand requires less Force. When the person hits concrete he does not sink in very a very far distance (in fact it is the person that takes most of the deforming) and so it requires a much greater force to absorb the energy.
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