A body is dropped from a height equal to radius of the earth. The velocity acquired by it before touching the ground is

A stone is dropped from a height equal to 3R , above the surface of earth. The velocity of stone on reaching the earth's surface is

A body attains a height equal to the radius of the earth. The velocity of the body with which it was projected is

A body is released from a height 5R where R is the radius of the earth. Then that body reaches the ground with a velocity equal to

A body projected from the surface of the earth attains a height equal to the radius of the earth. The velocity with which the body was projected is

A body projected from the surface of the earth attains a height equal to the radius of the earth. The velocity with which the body was projected is