8. Centripetal Forces & Gravitation
Energy of Elliptical Orbits
7:59 minutes
Problem 13.61
Textbook Question
Textbook QuestionComets move around the sun in very elliptical orbits. At its closet approach, in 1986, Comet Halley was 8.79 x 10⁷ km from the sun and moving with a speed of 54.6 km/s. What was the comet’s speed when it crossed Neptune’s orbit in 2006?
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