Planets would crash into the sun if it weren't for
A) the inverse-square law.
B) their relatively small masses.
C) their vast distances from the sun.
D) the fact that they are beyond the main gravitation of the sun.
E) their tangential velocities.

Question

Quizplus · Accepted Answer

Planets remain in orbit around the sun due to their tangential velocities. This velocity, combined with the gravitational pull of the sun, creates a balance that keeps the planets in orbit instead of crashing into the sun. The tangential velocity ensures that as the planet is pulled towards the sun, it also moves forward in its orbit, effectively "falling around" the sun rather than directly into it.

Planets Would Crash into the Sun If It Weren't for