AP Physics 1hardmcq1 pt
A 1000 kg satellite orbits at 7.0×10⁶ m from Earth's center (M = 6.0×10²⁴ kg, G = 6.7×10⁻¹¹). Its orbital speed is about
A.7.6×10³ m/s
B.5.7×10⁷ m/s
C.7.6×10⁶ m/s
D.3.8×10³ m/s
Explanation
Core Concept
v = √(GM/r) = √((6.7×10⁻¹¹)(6.0×10²⁴)/(7.0×10⁶)) = √(5.7×10⁷) ≈ 7.6×10³ m/s.
Correct Answer
A7.6×10³ m/s
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