An object of mass 20 kg is thrown upward with a speed of 4 m/s . {Take g= 10 m/s²}
(a) Calculate the maximum height it reaches. {Ans: 0.8m}
(b) Find its potencial energy whe. it reach the highest point. { Ans: 160J}
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when the body is released from a height of 2 meters then all the potential energy will be converted to kinetic energy.
assuming base as a reference
mgh+0=K.E.+0
so K.E.=400J
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