Question

a machine gun 2000kg on a horizontal frictional surface fire10 bullet per
second of mass of each bullet 10 gram and the velocity of each is 500m/ then the acceleration
of the car will be


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Answer 1

Step-by-step explanation:

Mcar=2000kg

n=10 bullets/second

mb=10g=0.01kg

vb=500m/s

Momentum of each bullet=Pb=mbvb=0.01×500=5kgms−1

Force on car=nPb=50kgms−2

Fcar=50N

acar=200050=401=0.025ms−2