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A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ? |
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Answer» 2 metres The potential ENERGY of a body when RAISED through height h is given by mgh. Each TIME, a normal rubber ball hits the floor, it loses one-fifth of its total energy and the rebound height is proportional to energy, so each BOUNCE will rebound to four-fifth of the previous bounce. But, the question states that there is no loss of energy/velocity after rebounding. So the height of 2 metres will be MAINTAINED. |
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