A bullet is fired into a wall with a velocity of 50 M per second. If the Bullet stops at the depth of 10 cm inside the wall find find the retardation provided by the wall

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N bullets each of mass m kg are fired with a velocity v ms−1 at the rate of n bullets per second upon a wall. The reaction offered by the wall to the bullets is given by

The correct option is A nmvTotal mass of bullets = Nm, time t=Nn The momentum of the bullets striking the wall =Nmv Rate of change of momentum (Force) =Nmvt=nmv

N bullets each of mass $m k g$ are fired with a velocity $v m s^{- 1}$ at the rate of n bullets per second upon a wall. The reaction offered by the wall to the bullets is given by

The correct option is A $n m v$
Total mass of bullets = Nm, time t $= \frac{N}{n}$
The momentum of the bullets striking the wall $= N m v$
Rate of change of momentum (Force) $= \frac{N m v}{t} = n m v$