Question

sel
A machine gun fires 120 bullets per minute
each of mass 50 g with a speed of 400 m/s.
The power of machine gun is
80 kW
8 kW
1
16 kW
28 kW​

Answer 1

Answer:

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Answer 2

Answer:

here is the answer plz just change the values

Explanation:

Given,

Number of bullets, n=540nos.

Mass of bullet, m=150gram=0.15kg

Velocity, v=750kmph=200ms

−1

Kinetic energy of 540 bullets, K.E=n×

2

1

mv

2

=540×

2

1

×0.15×200

2

=1620kJ

Power=

time

kineticenergy

=

60

1620

=27kW

Hence, power of machine gun is 27kW