The minimum velocity with which a body must be projected up so as to enable it to just overcome the gravitational pull is known as escape velocity.
- Escape velocity is independent of the mass and direction of projection of the body.
- Escape velocity depends on the reference body. Greater the value of (M/R) or (gR) for a planet, greater will be the escape velocity.
- If body projected with velocity is lesser than the escape velocity (v < ve) it will reach a certain maximum height and then may either move in an orbit around the planet or may fall down back to the planet.