The force of mutual attraction between any two objects by virtue of their masses is

Which of the following is incorrect about the gravitational force between two bodies?

A meteor of mass ' $m$ ' having a speed ' $V$ ' at infinity reaches the surface of the Earth with a speed of ( $v_c$ is escape speed from the Earth's surface)

If the orbital speed of a body revolving in a circular path near the surface of the Earth is $8 \mathrm{kms}^{-1}$, then the orbital speed of a body revolving around the Earth in a circular orbit at height of $19,200 \mathrm{~km}$ from the surface of Earth is (Radius of the Earth $=6400 \mathrm{~km}$ )