Q. 22

# A bullet of mass

Given,

Mass of bullet = m1

Mass of gun = m2

Initial speed of bullet = u1

The initial speed of gun = u2

Initial momentum = pi

Final speed of bullet = v1

final speed of gun = v2

Initial momentum =

Using Newton’s second law of motion, i.e.

Now since no external force acts on the system hence,

Hence, momentum

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