Homework Help: physics

Posted by joel on Thursday, September 8, 2011 at 1:58pm.

the moon orbits the earth in a circle (near enough) of radious 3.8x10^8 m, taking 27.3 days to make a complete orbit.
what is the speed of the moon relative to the earth?

physics - bobpursley, Thursday, September 8, 2011 at 3:07pm
speed= distance/time= 2PI*radius/period

you may want to change period to seconds.

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