If a body is released from a point at a ...

If a body is released from a point at a height equals to n times the radius of the earth R its velocity on reaching the surface of the earth is

`sqrt((ngR)/(n+1))`

`sqrt((2ngR)/(n+1))`

`sqrt((ngR)/2(n+1))`

`sqrt(((n+1)gR)/2n)`

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