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March 1, 2015

March 1, 2015

Posted by **Joe** on Monday, December 15, 2008 at 10:22pm.

a. At what speed did it orbit the moon?

b. How many minutes did it take to orbit once?

- Physics -
**Damon**, Tuesday, December 16, 2008 at 3:49amm gmoon = m v^2/r

where r is the orbit radius

r = 1.81^10^6 +.188*10^6 meters

g moon = G Mmoon/r^2

so

v^2 = gmoon * r

square root of that is v

then

2 pi r = distance around orbit

v = speed

time = distance / speed

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