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MCQ
A bullet of mass 20 g is fired from a gun of mass 5 kg with a velocity of 500 m/s. What is the recoil velocity of the gun?
Unit-3 Dynamics-1
A 0.5 m/s
B 2 m/s
C 20 m/s
D 5 m/s
Explanation

By conservation of momentum, (0.02 x 500) / 5 = 2 m/s, directed opposite to the bullet.

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