Question

A gun of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find total initial momentum of the system.​

Answer 1

Answer:

-2 m/s

Explanation:

Initial momentum of ‘ gun + bullet ‘ .

As initially both the gun and the bullet are at rest so the velocity of both bullet and gun is 0.

Therefore, the initial momentum of gun and bullet, pi = Mvi+mvi’ = 0

(Momentum gained by the bullet after firing.

Momentum gained by the bullet after firing, p = mv = 0.01×100 = 1 kg m s-1

Recoil velocity of the gun

Let the recoil velocity of the gun be V.

From conservation of momentum,

Final momentum of the system = initial momentum of the system

MV +mv = 0

⇒0.5×V = -1

⇒V = – 1/0.5 = -2 m/s

Answer 2

Answer:

hope it's helpful for you army

Happy army day