All the following statements are true.Which one follows directly from Kepler's third law?
A)Venus is more massive than Mercury.
B)Venus orbits the Sun at a slower average speed than Mercury.
C)Venus is larger than Mercury.
D)Venus has a thicker atmosphere than Mercury.

Question

Quizplus · Accepted Answer

Kepler's third law states that the square of a planet's orbital period is proportional to the cube of its semi-major axis. This means that planets farther from the Sun have longer orbital periods than planets closer to the Sun. Since Venus is farther from the Sun than Mercury, it must have a longer orbital period and therefore orbits the Sun at a slower average speed than Mercury.

All the Following Statements Are True