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Question 30578
JEE Physics · Hard

Center of Mass, Momentum and Collision: Advanced — Impulse in Explosion MCQ

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Advanced — Impulse in ExplosionHardQuestion 30578

Question

A firecracker at rest explodes. Piece A gets impulse +30 N·s. If only two pieces, what impulse does piece B receive?
  1. A
    +30 N·s
  2. B
    −30 N·s
    Correct
  3. C
    0
  4. D
    Depends on mass

Correct answer

−30 N·s

Explanation

Total external impulse on system = 0 (explosion is internal). So total impulse = J_A + J_B = 0 → J_B = −30 N·s.

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