Which of the following is NOT one of, nor a direct consequence of, - ProProfs Discuss

Which of the following is NOT one of, nor a direct consequence of, Keplers Laws?

A. As a planet moves around its orbit, it moves faster when nearer the Sun and slower when more distant
B. The force of attraction between any two objects decreases as the distance between them increases
C. More distant planets orbit the Sun at slower speeds
D. The orbit of each planet is an ellipse with the Sun at one focus
E. They all are part of Kepler s laws

This question is part of Astronomy Final Test 1
Asked by Brentzel, Last updated: May 22, 2020

Christian Jackson

Christian Jackson, Content Developer, Austin

Correct answer option B and E
Kepler’s laws of planetary motion are 3 laws stating the motion of planets around the Sun. They include:

All planets move about the Sun in elliptical orbits, having the sun as one of the foci.

A line that connects a planet to the Sun sweeps out equal areas in equal lengths of time.

The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

Option B, which states that the force of attraction between two objects decreases as the distance between them increases is Newton’s Law of Universal Gravitational.

Option E is part of the answer because not all are part of Kepler’s Laws.

John Smith