Question

Which of the following statements about gravity is true?

A. Gravity pulls objects toward the center of Earth.
B. Gravity only pulls you to the center of Earth if you are at the top of it.
C. Gravity only pulls objects toward the center of Earth when you are in contact with it. D. Gravity pulls all objects toward the center of Earth except when you are floating on water.

Answer 1

A.

Gravity is the force of attraction between any two objects in the universe. Even you have your own gravity, you just aren’t massive enough for it to be visible on human scales. Gravity is a constant force so it doesn’t only pull if you are on top of it so it can’t be B, Gravity keeps the moon in rotation so it isn’t C, and people do sink when in water (except when they lie flat to increase buoyancy which is beyond the scope of this question) so it isn’t D. Therefore, it must be A