# Formula – Escape Speed

Velocity or Escape speed is the speed of a body at which the total of the kinetic energy and gravitational potential energy is zero. In a different sense, it can be described as the speed required to break the gravitational attraction. The formula for escape speed is articulated as,



Where, G is the gravitational constant, is the mass of the planet and is the distance from the center of gravity.

Escape Speed Solved Examples

Problem 1: The mass of the Jupiter is given as 1.898×1027Kg and the radius is given as 71492km. Compute the escape speed?

Known parameters are,
Mass of the Jupiter, M = 1.898×1027kg and the radius, r = 71492km
G = 6.673×10-11m3/kgs2
Formula for escape speed is,





Problem 2: The mass of the Moon is given as 7.35×1022Kg and the radius is given as 1.7×106m. Compute the escape speed?