Gravity is a force of attraction between objects due to their masses. Larger masses closer together experience a larger gravitational pull, while smaller masses farther apart experience a smaller pull. Weight is the amount of gravitational force exerted on an object. While mass stays constant, weight can change depending on location due to varying gravitational forces. Inertia is an object's resistance to changes in motion, where more mass means more inertia and resistance to changes in motion.

2. How does mass & distance affect the gravitational pull between objects? Large mass & close in distance = Large gravitational pull/force Close in distance, but small mass = Small gravitational pull/force Large mass, but large distance = Small gravitational force