whether a planet moves faster or slower when it is closer to the Sun.(adsbygoogle = window.adsbygoogle || []).push({});

Now I intuitively know that is [tex]\frac{dA}{dt}[/tex] is constant and the Radius r is changing. Then as r increases it moves slower and as r decreases is moves faster.

I am having trouble setting up a more formal proof.

I am thinking I will need to use the relationship [tex]L=\vec r*\vec p[/tex]

Please send a hint my way.

Thanks,

Casey

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# Homework Help: Use Kepler's 2nd to show

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