Question

A gun of mass 20 kg fires a bulllet of mass 50 g with a velocity of 200 ms. Calculate the velocity of the recoil of the gun

Answer 1

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

Answer 2

0.2

Answer 3

0.5 mper second

Answer 4

A force of 120 N acts on stationary body 4 second and the body required a velocity of 36ms . Calculate the mass of the body.