When a falling meteoroid is at a distance above the Earth's surface of 3.20 times the Earth's radius, what is its acceleration due to the Earth's gravitational pull?

Question

anonymous · Answer

$$R=3.2R_E$$
$$g=G\frac{M_E}{(3.2R_E)^2}$$

anonymous · Answer

RE = radius of the earth
ME = mass of teh erf

anonymous · Answer

so the radius of the earth is supposed to be a known thing?

anonymous · Answer

yes.  Both the mass and radius of the earth are known quantities. It should be either in your text book or google it.