A machine gun fires a bullet of mass 65,g with a velocity of 1300 ,m / s . man holding it can exert

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4-1.Newton's Laws of Motion

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A machine gun fires a bullet of mass $65\,g$ with a velocity of $1300 \,m / s$. The man holding it can exert a maximum force of $169 \,N$ on the gun. The number of bullets he can fire per second will be ............

A$1$

B$2$

C$3$

D$4$

Solution

(b)
$n m v=F$
$n$ is number of bullets fired per second
$n\left[\frac{65}{1000} \cdot 1300\right]=169$
$n=2$

Standard 11

Physics

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