The minimum speed with which a body must be thrown to reach a height R"/"4 above the surface of the earth is (R to Radius of the earth)

The minimum speed with which a body must be thrown to reach a height R

1.	The minimum speed with which a body must be thrown to reach a height R"/"4 above the surface of the earth is (R to Radius of the earth)
Answer» `SQRT((gR)/(2))` `sqrt(gR)` `sqrt((2gR)/(5))` `sqrt((gR)/(5))` ANSWER :C