A cannon of mass 100 kg is kept on a frictionless floor. If a cannon ball of mass 1 kg is fired from it with a speed of 200 m/s. With what velocity the cannon will move ?

Explanation

Conversation of linear momentum
Initial momentum of cannon + cannon ball = Final momentum of cannon + cannon ball
` 0+0 = 1 kg xx 200 m//s + 100 kg xx v `
` rArr V = (-200)/(100) m//s = -2 m//s`