Question

A bullet of mass 10 is fired at a speed of 400m/s from a gun of mass 4 kg . what is the recoil velocity of the gun ?​

Answer 1

80 is the velocity of the gun

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Answer 2

Answer:

Mg= 4kg

Mb= 10kg

Vb=400m/s

Vg= ?

momentum of gun = 4Vkgm/s

momentum of bullet = 10*4 kgm/s

by law of conservation of momentum :

Mg=Mb

4V=10*400

v=1000m/s

there for recoil velocity of gun = 1000m/s