Question

From an automatic gun a man fires 360 bullets per minute with a speed of 360 km/hour. Of each weighs 20g, the power of the gun is

Answer 1

hlo mate ✌️

Power of a body is defined as the rate at which the body can do the work.

Power =Wt, where work done W=F×d=m×a×d

360 bullets are fired in one minute → time taken for firing 1 bullet t=60360 =16s

Now, v=u+at, but u=0 as the bullet starts from rest and v=360km/hr=100m/s

⇒100=0+a16→a=600m/s² answer

Hope it helps.

Answer 2

Answer:

600W

Explanation:

K.E=1/2mnv^2

=1/2×0.02×3×1000

=600J

P=W/t

=600/1s

=600W

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