A body of mass 10kg and height 20m .Find iys potential energy before it is dropped find its kinectic energy when it is 8 m above the ground.
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Explanation:
m=10kg
h=20m
g=9.8 m/s
EP=mgh
EP=10×20×9.8
EP=1960 J
EK=1/2×mv²
But it is above the ground means it has only potential energy to fell down on the ground...
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