If g is acceleration due to gravity on the surface of the earth and R is radius of the earth, the height from which a body should be released so that it reaches the ground with velocity sqrt(gR//2) is

If g is acceleration due to gravity on the surface of the earth and R

1.	If g is acceleration due to gravity on the surface of the earth and R is radius of the earth, the height from which a body should be released so that it reaches the ground with velocity sqrt(gR//2) is
Answer» 3 R R /3 2 R R/2 ANSWER :B