Posted by **Chris** on Wednesday, December 5, 2012 at 4:59pm.

The radius of Earth is 6,371 kilometers. A space shuttle orbits 315 kilometers above the surface of Earth. The space shuttle completes 240° of a revolution around Earth in one hour. What is the average speed of the space shuttle? Choose the closest answer.

Please help both with solving and answering.

(a) 14,000km/hr (b) 20,100km/hr (c)28,000km/hr (d) 63,000km/hr

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