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 EarthSun 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?

College Physics  Anonymous, Sunday, December 1, 2013 at 11:18pm
how do you solve this?
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