Science

A man drop a stone of mass 2kg room the top of a building of height 15m when it reaches the ground find its kinetic energy.

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  1. KE=initial PE=2*9.8*15 joules

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  2. K.E=initial P. E
    :K.E=mgh
    K.E=2*15*9.8
    K.E=294

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