Orbiting the Moon
Suppose a spacecraft orbits the moon in a very low, circular orbit, just a few hundred meters above the lunar surface. The moon has a diameter of 3500 km, and the free-fall acceleration at the surface is .
How much time does it take for the spacecraft to complete one orbit?
A. 38 min
B. 76 min
C. 110 min
D. 220 min
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