Question

3
A machine gun fires 420 bullets per minute. The velocity of each
of the bullet is 300 ms and the mass of each bullet is 1g. The
power of the machine gun is
315W
315000W
630W
3150W​

Answer 1

Answer:

options b is correct answer

Answer 2

Answer:

315E is the write answer

Explanation:

P=

t

Work Done

=

t=1 min

420×(ΔKE)

one bullet

=

60

420×

2

1

×10

−3

×(300)

2

=315 W