Which of the following is required for two objects to exert a gravitational force on each other?
AThey must both be moving.
BThey must both have mass.
CThey must be in contact.
DThey must have the same mass.
Explanation
📌 Gravity acts between any two objects that have mass, regardless of their motion, contact status, or relative sizes. Gravity operates at a distance (no contact needed) and has infinite range. Distractor A confuses gravity with kinetic effects; C confuses gravity with contact forces (like the normal force); D introduces an equal-mass requirement that does not exist.