A body of mass m kg starts falling from ...

A body of mass m kg starts falling from a point 2R above the earth's surface. Its kinetic energy when its has fallen to a point 'R' above the earth's surface [R-Radius of earth M-mass of earth, G-gravitational constant]

`1/2 (GMm)/R`

`1/6 (GMm)/R`

`2/3 (GMm)/R`

`1/3 (GMm)/R`

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