A body of mass m falls from a height R above the surface of the earth, where R is the radius of the earth. What is the velocity attained by the body on reaching the ground? Acceleration due to gravity on the surface of the earth is g?

A body of mass m falls from a height R above the surface of the earth,

1.	A body of mass m falls from a height R above the surface of the earth, where R is the radius of the earth. What is the velocity attained by the body on reaching the ground? Acceleration due to gravity on the surface of the earth is g?
A.	\[gR\]
B.	\[\sqrt{gR}\]
C.	\[\sqrt{\frac{g}{R}}\]
D.	\[\frac{g}{R}\]
Answer» C. \[\sqrt{\frac{g}{R}}\]

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A body of mass m falls from a height R above the surface of the earth, where R is the radius of the earth. What is the velocity attained by the body on reaching the ground? Acceleration due to gravity on the surface of the earth is g?

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