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As per your syllabus, the numerical value of escape speed from the Earth's surface is approximately which?
A30 km/s
B2.3 km/s
C7.9 km/s
D11.2 km/s
Answer & Solution
Correct answer: D. 11.2 km/s
Your syllabus: v_escape ≈ 11.2 km/s for Earth.
Orbital speed near surface ≈ 7.9 km/s
Earth-orbit-around-Sun ≈ 30 km/s.
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