A machine gun fires 300 bullets per min if the mass of each bullet is 10 ~g and the velocity of the bullets is 600 ~ms ⁻¹ , the power (in kW ) of the gun is

Step-by-step solution

Work done by the gun = total kinetic energy of the bullets aligned & =n 1 2 m v^2=300 1 2 10 10⁻³ (600)^2 & =150 10 10⁻³ 600 600 aligned aligned Power of gun & = work done Time taken & = 150 10 10⁻³ 600 600 60 ~s & =9 ~kW ( 1 minute =60 seconds ) aligned