Physics

Problem

A body is released from a height equal to the radius (R) of the earth. The velocity of the body when it strikes the surface of the earth will be : - (Given

g

= acceleration due to gravity on the earth.) (1)

\sqrt{gR}

(2)

\sqrt{4gR}

(3)

\sqrt{2gR}

(4)

\sqrt{\frac{gR}{2}}

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