Escape velocity from Earth's surface is approximately:
A9.8 m/s
B30 km/s
C11.2 km/s
D7.9 km/s
Answer & Solution
Correct answer: C. 11.2 km/s
v_esc = √(2GM/R) ≈ 11.2 km/s for Earth. This is the minimum velocity needed to escape Earth's gravity without further propulsion.
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