JEE Main · PhysicsMedium
A rocket of initial mass ejects gas at a constant rate with velocity relative to the rocket. The acceleration of the rocket at time is:
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: A —
Solution
- The thrust force is .
- The mass of the rocket at time is .
- Using Newton's second law, .
- Therefore, .
- Hence the answer is (A).
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