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NEET 1996 (AIPMT) · Impulse & Momentum Conservation

Impulse & Momentum Conservation question from NEET 1996 (AIPMT)

Q25NEET 1996 · AIPMTEasy

Impulse & Momentum Conservation

A man fires a bullet of mass 200 gm200\text{ gm} at a speed of 5 m/s5\text{ m/s}. The gun is of one kg mass. By what velocity the gun rebounds backward?

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Answer: (a)

  1. Momentum is conserved: mbvb=MgVgm_b v_b = M_g V_g.
  2. 0.2×5=1×Vg0.2 \times 5 = 1 \times V_g
  3. Vg=1 m/sV_g = 1\text{ m/s}
  4. So the answer is (a) 1 m/s.
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