How high must a body be lifted to gain a...

How high must a body be lifted to gain an amount of potential energy equal to the kinetic energy it has when moving at speed `20 ms^(-1)`? The value of acceleration due to gravity at a pleace is `g=9.8 ms^(-2)` .

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Verified by Experts

`mgh=1/2 mv^(2)`
so `h=20.4m`

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