A disc of mass 0.2 kg is kept floating in air without falling by vertically firing bullets each of mass 0.05 kg on the disc at the rate of 10 bullets per every second. If the bullets rebound with the same speed, then the speed of each bullet is (Acceleration due to gravity = 10 m/s$^2$)
Show Hint
- 2 m/s
- 10 m/s
- 20 m/s
- 1 m/s
The Correct Option is A
Solution and Explanation
Top Questions on momentum
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Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
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If \( \vec{u}, \vec{v}, \vec{w} \) are non-coplanar vectors and \( p, q \) are real numbers, then the equality:
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