How Fast Is the Moon Moving as It Orbits the Earth

question 21

Multiple Choice

How fast is the Moon moving as it orbits the Earth? For reference, the Moon's orbit is approximately circular with a radius equal to 400,000 km, and the Moon's orbital period is 27 days.

• A) 1 km/s
• B) 10 km/s
• C) 50 km/
• D) 100 km/s
• E) 500 km/s

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