A Satellite Is in a Circular Orbit About the Earth

question 28

Multiple Choice

A satellite is in a circular orbit about the Earth at a distance of two Earth radii above the surface.What is the speed of the satellite? (The radius of the Earth is 6.4 × 10⁶ m,and G = 6.67 × 10−¹¹ N × m²/kg². )

• A)2 800 m/s
• B)4 600 m/s
• C)5 600 m/s
• D)17 000 m/s

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