Q

A 40 g bullet is fired horizontally at 180 m/s from a gun of mass 3 kg. Find the gun's recoil velocity.

RRB Group D 08/10/2018 / Shift-III 2018
✓ Answer: C −2.4 m/s
Conservation of momentum gives V = −mv/M = −0.04 × 180/3 = −2.4 m/s.
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