A stationary object is released from a point P a distance 3R from the centre of the moon which has radius R and mass M. which one of the following expressions gives the speed of the object on hitting the moon?

Options

A. `((2GM)/(3R))^(1//2)`
B. `((4GM)/(3R))^(1//2)`
C. `((GM)/(3R))^(1//2)`
D. `((GM)/R)^(1//2)`

Answer

B