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23 Nov 2019

Halley's comet, which passes around the Sun every 76 years,hasan elliptical orbit. When closest to the Sun (perihelion) it isata distance of 8.823 x 1010 m and moves with a speedof54.6 km/s. The greatest distance between Halley's comet and theSun(aphelion) is 6.152 x 1012 m.

Part A: Is the speed of Halley's comet greater than or lessthan54.6 km/s when it is at aphelion? Explain.

Part B: Calculate its speed at aphelion.

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Reid Wolff
Reid WolffLv2
15 Apr 2019

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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