The fundamental force that governs the motion of the planets is the
A) strong force.
B) weak force.
C) electromagnetic force.
D) gravitational force.

Question

Quizplus · Accepted Answer

The gravitational force is the fundamental force that governs the motion of the planets. It is the force of attraction between any two objects with mass, and it is what keeps planets in orbit around the sun and moons in orbit around planets. The other choices do not apply to planetary motion, as the strong force and weak force are only important on a subatomic level, and the electromagnetic force is important for interactions between charged particles but not for planetary motion.

The Fundamental Force That Governs the Motion of the Planets