gravity in physics

Chapter 9: Gravity 1) The planet and its moon gravitationally attract each other. Rank the forces of attraction between each pair, from greatest to least. (2) 2d 2) Pretend you fall into a hole bored completely through the Earth. Discounting friction and rotational effects, rank from greatest to least positions A, B, C, and D for your a. speed (1) b. acceleration toward Earth's center (1 ) 3) What equation defines the law of universal gravitation? What relationship does the force have with the distance of separation of the two masses? (1)