A body of mass 1.5 kg is thrown upward with an intial velocity of 30 m/s
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The height to which the body reaches after 2 seconds
S = ut + 1/2a t^2
= 15*2 - (1/2 * 10 * 4)
= 30 - 20
= 10 m
Potential energy gained by body = mgh = 1.5 * 10 * 10 = 150 J
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