F=Gm1m2/r^2, for G

F=Gm1m2/d2 solve for m1

F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =

U+K=−Gm1m2/r+1/2 m1 v2, where m1 and m2 are the masses of two objects, r is the distance between t...