Question

A gun of mass 20kg fires of bullet of mass 50g with a velocity of 200 m/s calculate the velocity of the recoil of the gun
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Answer 1

Answer:

Let,

bullets mass,m =5 gm = 0.05kg

bullet before shot velocity,u = 0m/s

bullets velocity,v= 200 m/s

guns mass,m'= 20kg

before shot,u'=0m/s

after shot velocity = v'

According to newton

mu+m'u' = mv+m'v'

now calculate, the velocity will be 0.5m/s