A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is

Question

A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is (A) vNm (B)  (mv/N)  (C)  mvN2 (D)  (mv2/N)

Tardigrade Admin · Accepted Answer

F=p × t = Nm ( v - u ) t = mNv (as u =0, t =1 s)

Q. A gun fires $N$ bullets per second, each of mass $m$ with velocity $v$ . The force exerted by the bullets on the gun is

$v N m$

$\frac{m v}{N}$

$m v N^{2}$

$\frac{m v ^{2}}{N}$

$F = p \times t$
$= N m (v - u) t$
$= m N v$ (as $u = 0, t = 1 s$ )

Q. A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is

vNm

Nmv​

mvN2

Nmv2​