1. The planet and its moon gravitationally attract each other. Rank the forces of attraction between the pairs, A to D, from greatest to least. 2. Rank the average gravitational forces from greatest...

1. The planet and its moon gravitationally attract each other. Rank the forces of attraction between the pairs, A to D, from greatest to least.

2. Rank the average gravitational forces from greatest to least between (a) the Sun and Mars, (b) the Sun and the Moon, (c) the Sun and Earth.