Question

A cannon has a mass of 1500 kg. It fires a cannon ball of mass 10 kg with a velocity of 100 m/s. With what velocity does the cannon move after the cannon ball is fired?

Answer 1

Since there is no external force overall momentum of the system is constant which is zero.

⇒Mv

1

+mv

2

=0

⇒1000(v

1

)+10(100)=0

⇒v

1

=−1m/s

So, cannon will recoil at the speed of 1m/s

Please solve like this.

Hope it will help you..