The speeds of the planets about the Sun depend on
A)their distances from the Sun.
B)the masses of the planets.
C)their periods of rotation.
D)none of the above

Question

Quizplus · Accepted Answer

The speed of a planet's orbit around the Sun is determined by its distance from the Sun. The closer a planet is to the Sun, the faster it moves in its orbit. This relationship is described by Kepler's laws of planetary motion. The masses of the planets and their periods of rotation also affect their orbits, but to a lesser extent than their distances from the Sun.

The Speeds of the Planets About the Sun Depend on