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AP EAMCET202524 May 2025Morning ShiftPhysicsCenter of Mass, Momentum and CollisionActual

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 ~ms ⁻² )

Options

  1. A2 ~m ~s ⁻¹
  2. B10 ~m ~s ⁻¹
  3. C20 ~m ~s ⁻¹
  4. D1 ~m ~s ⁻¹

Correct answer

A. 2 ~m ~s ⁻¹

Step-by-step solution

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