The gravitational pull of the earth on an object is inversely proportional to the square of the distance of the object from the center of the earth. At the earth's surface this force is equal to the object's normal weight mg , where g =9.8m/s2 , and at large distances, the force is zero.If a 65000- kg asteroid falls to earth from a very great distance away, how much kinetic energy will it impact to our planet? You can ignore the effects of the earth's atmosphere.
