P h y s i c s Q u e s t i o n?

Question

The acceleration of gravity on the moon is 0.166 times that on earth, and the moon's radius is 0.273 RE. What is the escape speed for a rocket leaving the moon in units of km/s?

Answer 1

The escape speed (Ve) can be expressed as

Ve = sqrt(2*g*r)

where g is the gravitational acceleration and r is the radius of the planet/moon. Check out the link below for information about escape velocity.