Posted by **Kelly** on Monday, March 5, 2012 at 4:53pm.

Take the radius of the earth's orbit to be 1.5 x 1011 m.

a. Using a year to be 365 days, find the speed of the earth as it moves around the sun. __m/s

b. Convert this speed to miles/hour (show your conversion factor in your written backup). __miles/hour

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