A comet goes around the Sun in an elliptical orbit. At its farthest point, 440 million miles from the Sun, it is traveling with a speed of 13,000 mi/hr. (a) How fast is it traveling at its closest approach to the Sun, at a distance of 120 million miles?

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter8: Central-force Motion
Section: Chapter Questions
Problem 8.20P
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A comet goes around the Sun in an elliptical orbit. At its farthest point,
440 million miles from the Sun, it is traveling with a speed of 13,000 mi/hr.
(a) How fast is it traveling at its closest approach to the Sun, at a distance of 120 million miles?

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