Question

A machine gun fires 360 bullets per minute and each bullet travels with a velocity 600m/s if the mass of each bullet is 5 GM ​

Answer 1

Answer:

Given,

Number of bullets, n=360nos.

Mass of bullet, m=5gram=0.005kg

Kinetic energy of 360 bullets, K.E=n×

2

1

mv

2

=360×

2

1

×0.005×600

2

=324000J

Power=

time

kineticenergy

=

60

324000

=5400watt

Answer 2

Number of bullets, n=360nos.

Mass of bullet, m=5gram=0.005kg

Kinetic energy of 360 bullets, K.E=n× 1/2mvsquare=360*1/2*0.005*600=

=324000J

power=kinetic energy/time

324000/60=5400watt