A body of mass m is projected from the earth's surface at the point of launch, the acceleration of free fall is g and the radius of earth is Re. To escape from the gravitational field of the earth, the speed of the body (i.e. escape velocity) must be at least:
Correct answer: C. Option C
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Option C is correct since it is the correct formula.
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