A machine gun fires n bullets per second and the mass of each bullet is m. If the speed of bullet is v, then the force exerted on the machine gun is :

Foundation

Physics Foundation

Force and Newtons Law of Motion

Impulse and Momentum

Question

A machine gun fires n bullets per second and the mass of each bullet is m. If the speed of bullet is v, then the force exerted on the machine gun is :

mnv

$\frac{mnv}{g}$

mnvg

mng

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Momentum of one bullet = mv
then rate of change of momentum of n bullet i.e.
Force exerted $F = \frac{ΔP}{Δt} = nmv$