A stone is dropped from a height equal to `nR`, where `R` is the radius of the earth, from the surface of the earth. The velocity of the stone on reaching the surface of the earth 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 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

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth, where R is the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of the earth is …… hours.