What is one of kepler's laws of planetary motion?
a. planets move on elliptical orbits...
What is one of kepler's laws of planetary motion?
a. planets move on elliptical orbits with the sun at one focus.
b. gravitational force between two objects decreases as the distance is squared.
c. an object in motion remains in motion.
d. inner planets orbit in the opposite direction of outer ones.
Answers: 2
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