Homework Help: math

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

The Moon orbits Earth every 27.3 days. Determine the angular velocity of the Moon, in degrees per day and in radians per day.

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 4:57am
well 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 5:02am
oh 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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