A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 5e10 m (inside the orbit of Mercury), at which point its speed is 9e4 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6e12 m from the Sun? (This is the approximate distance of Pluto from the Sun.)(adsbygoogle = window.adsbygoogle || []).push({});

2. Relevant equations

Ug(r) = -G(m1*m2)/r

this is a guess, the problem is i dont know what equations to use

i tried to solve it with an incorrect method and got a speed of 3500 something m/s

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# Homework Help: Speed update of a comet in an ELLIPTICAL orbit

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