The escape velocity of a body on earth which is independent of its mass is about ______________________ km/second?
Correct answer: C. 11
- A. 3
- B. 7
- C. 11
- D. 15
Explanation
Escape velocity is given by √(2gR), so the body's mass cancels from the equation. Using Earth's radius and gravity gives approximately 11.2 km/s.
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