Q. If the moon is to escape from the gravitational field of the earth forever, it will require a velocity
A) $11.2$ $kms^{- 1}$
B) Less than $11.2\ kms^{- 1}$
C) Slightly more than $111.2\ kms^{- 1}$
D) $22.4\ \ kms^{- 1}$
Explanation
(a) The escape velocity at the surface of earth is 11.2 $kms^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.