Grade 9Mechanics
A gun of mass M fires a bullet of mass m with a Kinetic energy E . The velocity of the recoil of the gun is
A gun of mass M fires a bullet of mass m with a Kinetic energy E . The velocity of the recoil of the gun is
2 Answers
Arun
Momentum before firing = 0
Momentum after firing = mv + MV
According to law of conservation of momentum,
mv + MV = 0
Recoil velocity V = - mv /M
Momentum after firing = mv + MV
According to law of conservation of momentum,
mv + MV = 0
Recoil velocity V = - mv /M
Khimraj
mass of bullet = m
velocity of bullet v = 
mass of gun = M
recoil velocity of gun V=?
apply the law of conservation of momentum
mv + MV = 0
V = -mv/M = 
Hope it clears............................
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