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October 21, 2014

Homework Help: College Physics

Posted by johnathan on Sunday, November 4, 2012 at 12:27pm.

In 1986, the distance of closest approach of Halley’s comet to the Sun is 0.57AU. (1 AU is the mean Earth-Sun distance = 150 million kilometers.) The comet’s speed at closest approach is
54.97 km/s.

(a) – By 1989, Halley’s comet had traveled to a distance corresponding to the orbit of Saturn at 9.56AU. What was the speed of Halley’s Comet at that time? Give your answer in units of km/s.

(b) – In 2024, Halley’s comet will be at the furthest distance from the sun corresponding to about 35AU. What will the speed of Halley’s Comet be at that time?

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