The speed of the object just before it hits the earth, in terms of G, M, and R is __________

Question

An object is dropped from an altitude of one earth radius above the earth’s surface. Neglect air resistance. Let M = the mass of the earth and R = the radius of the earth. The speed of the object just before it hits the earth, in terms of G, M, and R is __________ Hint: Draw a diagram to show the initial and final positions of this object with respect to the surface of Earth. Then use Conservation of Mechanical Energy.

Answer 1