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Lesson 9.4 Kepler's Laws and Newton's Universal Law of Gravitation

Question 1 • AA-F26 Physical Science

Choose the law each sentence describes.

Answer
This law relates a planet’s orbital period and its average distance to the Sun.:

Kepler’s third law

The orbits of planets are ellipses with the Sun at one focus.:

Kepler’s first law

The speed of a planet varies, such that a planet sweeps out an equal area in equal time frames.:

Kepler’s second law

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