Question

(e)A body of mass 20 kg thrown vertically upwards attains a maximum height of 20 m.How much

would the total energy possessed by the body at a height of 10 m ?
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Answer 1

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