Question

A 10 g bullet is shot from a 5 kg gun with velocity of 400m/sec. what is the recoil velocity of the gun​

Answer 1

Explanation:

★WE HAVE :

•Mass of bullet,m=10g

•Velocity of bullet,v=400m/s

•Mass of gun,M=5kg=5000g

•Recoil velocity of gun,V=??

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According to the law of conservation of linear momentum,,

initial momentum= -final momentum

=> mv= -MV

=>10×400= -5000V

=>4000/(-5000)=V

=>V= -0.8 m/s

Therefore,, Recoil velocity of gun,V=0.8m/s.

-ve sign tells that recoil velocity of the gun is opposite of the velocity of bullet.

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