1. A body of mass 100 gram falls vertically from a height of 80 meter. Calculate it’s kinetic and potential energy at height of 75 meter above the ground(g=10m/s²).
2. A body of mass 100 gram falls vertically from a height of 80 meter. At what height potential and kinetic energy will be equal to each other, what will be the velocity of the body at this height(g=10m/s²).
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