1.

A ball is thrown upward with a kinetic energy of 20 J.maximum height of 2 m.Findthemassofthehailfitgoestoa2oCColculate the kinetic cnergy of the body

Answer»

potential energy = kinetic energy = 20 Jouleso,PE = mgh = 20m = 20/ghm = 20/(10X2)thus, the mss of the body will be = 1 kg.

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