N bullets,each of mass m , kg,are fired with | vedclass

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Question

(A) The force exerted by the wall on the bullets is equal to the rate of change of momentum of the bullets.Each bullet has a mass $m$ and velocity $v$

Vedclass · Accepted Answer

$nmv$

Vedclass · Answer

(A) The force exerted by the wall on the bullets is equal to the rate of change of momentum of the bullets.Each bullet has a mass $m$ and velocity $v$,so the momentum of one bullet is $p = mv$.Since $n$ bullets strike the wall per second,the total momentum change per second is $\Delta p = n 	imes (mv - 0) = nmv$.According to Newton's second law,the force $F$ is equal to the rate of change of momentum: $F = \frac{dp}{dt} = nmv$.Thus,the reaction force offered by the wall is $nmv$.

$N$ bullets,each of mass $m \, kg$,are fired with a velocity $v \, m/s$ at the rate of $n$ bullets per second upon a wall. The reaction force offered by the wall to the bullets is given by:

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