Question

A bullet of mass 0.50kg is fired from a gun of mass 5kg what is the velocity of bullet if recoil velocity of gun is 5 m/s.​

Answer 1

Explanation:

mass of bullet = 50g = 50/1000 kg => 1/20kg

velocity of bullet = 1km/h => 5/18×1 m/s => 5/18 m/s

mass of gun = 5kg

velocity of gun (recoil) => ? (to be determined)

we know that ,

mass of bullet × velocity of bullet = mass of gun × velocity of gun

1/20 × 5/18 = 5 × velocity of gun

1/72 = 5×velocity of gun

1/72 × 1/5 = velocity of gun

1/360 m/s => velocity of gun (recoil)

or we can write, 1/360 × 18/5 => 1/100 km/h

hope this helps