What Is the Circular Velocity of an Object Orbiting Earth $v _ { c } = \sqrt { \frac { G M } { r } }$

question 15

Multiple Choice

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? Hint: $v _ { c } = \sqrt { \frac { G M } { r } }$ ; G = 6.67 × 10 ^-11 m ³/s² /kg;  M _E = 5.97 × 10²⁴ kg.

• A) 0.2 m/s
• B) 2 m/s
• C) 20 m/s
• D) 200 m/s
• E) 2,000 m/s

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