Which of the following best represents Newton's Third Law of Motion?   a. P2 = ka3.   b. Planets sweep equal areas in equal times.   c. None of the other answers are correct.   d. F = ma.   e. Planets revolve in elliptical orbits with the Sun at one focus

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!