What is the magnitude of the orbital velocity of the planet Mercury (orbit radius =5.79 * 10^{7} {km}, orbital period = 88.0 days)?(adsbygoogle = window.adsbygoogle || []).push({});

Ive been trying to solve this using this equation v=(2pi(57.9*10^9m))/(7.6*10^3)s

but it is not coming out right...the numbers in the equation are the units in meters and seconds because that must be the form of the answer. I also have to solve for accelereation and have used this equation

a=((4pi^2(57.9*10^9))/(7.6*10^6)^2

this has also not worked out and its the only equations that could even fit the problem from this particular section in the book. please help!

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# Homework Help: Orbital velocity?

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