Question

Which variables are involved in understanding Kepler's third law of motion? Give the best answer
Responses

period of revolution, period of rotation
period of revolution, period of rotation - no response given

eccentricity of orbit, rotational velocity
eccentricity of orbit, rotational velocity - no response given

rotational velocity, distance to sun
rotational velocity, distance to sun - no response given

orbital velocity, distance to sun

Answer 1

Kepler’s third law relates the orbital period (period of revolution) to the size of the orbit (the semi‑major axis — i.e., average distance to the Sun): P^2 ∝ a^3.

None of the provided choices give that exact pair. (Period of rotation is the planet’s spin, not involved.)