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October 21, 2014

October 21, 2014

Posted by **Anonymous** on Sunday, November 8, 2009 at 12:56pm.

The radius of the orbit of the Moon is about 384 400 km. How far does the Moon move along an arc of it's orbit every?

- math -
**IWantAnIceCreamTruck**, Wednesday, November 10, 2010 at 4:57amwell it takes the moon to rotate earth 27.3 days.1 rotation = 360 degrees

therefore 360/27.3 = 13.19 degrees/day

to convert to radians, 1 rotation = 360 degrees= 2 X Pi

2Pi/27.3days = 0.23 rad

- math -
**IWantAnIceCreamTruck**, Wednesday, November 10, 2010 at 5:02amoh nd for thhe second part use the formula arc= radius X angle theta

angle would be the one we calculated in th first parrt, MAKE SURE YOU ALWAYS PUT THETA IN RADIANS IN THIS FORMULA

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