A comet moves on an elliptical orbit around the Sun.Where is the comet's velocity largest?
A) perihelion
B) aphelion
C) the focus
D) nowhere; it travels at a constant velocity

Question

Quizplus · Accepted Answer

According to Kepler's second law, a planet/comet moves fastest when it is closest to the Sun (perihelion) and slowest when it is farthest from the Sun (aphelion). Therefore, the comet's velocity is largest at its perihelion point.

A Comet Moves on an Elliptical Orbit Around the Sun