Kepler determined that planets change their speed as they travel around the sun. This happens due to all of the following EXCEPT

Question

A). The sun's gravity makes the planets slow as they get closer
B). The sun's gravity pulls against the planet's inertia in some places
C). The sun's gravity pulls with the planet's inertia in some places
D). The planets' orbits are elliptical

Answer 1

D). The planets' orbits are elliptical