The earth has about 80 times the mass of the earth's moon.
The gravitational force exerted on the
moon by the earth has what relation to the
gravitational force exerted on the earth by the
moon?
1. 80 x
2. zero; the earth exerts a force on the moon,
but the moon is too small and too far away to
exert a force on the earth.
3. the same as
1
4.
Х
80