The reason for the data that the average speed of a new planet in orbit is faster when it far from the star and slower when it is near the star.

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Chapter 3, Problem 12QP

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The reason for the data that the average speed of a new planet in orbit is faster when it far from the star and slower when it is near the star.

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Which of the following statements cannot be supported by Kepler's laws of planetary motion? a The distance of a planet around the sun changes throughout its orbit. b The speed a planet is moving around the sun changes throughout the year. c The orbital period of Mercury can be calculated using the orbital period of Jupiter and the average distances of both planets. d The age of the four largest planets can be determined using the age of the four smallest planets and the average distances of each planet.

2. From Kepler's Third Law, the period (P) squared divided by the cube of semi-major axis (d) is the same for all planets and is expressed as P2 / d = k, where k is a constant. One can conclude that A. In the same amount of time, every planet orbits the sun. B. At the same distance from the sun, every planet orbits the sun. C. It takes more time to orbit the sun if the planets are farthest from the sun. D. It takes less time to orbit the sun if the planets are farthest from the sun.