A body starts from rest from a point dis...

A body starts from rest from a point distant `r_(0)` from the centre of the earth. It reaches the surface of the earth whose radius is `R`. The velocity acquired by the body is

`2GM(1/R-1/R_(o))`

`sqrt(2GM(1/R_(o)-1/R)`

`2GM(1/R-1/R_(o))`

`2GMsqrt(1/R-1/R_(o))`

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