Arifle is used during the biathlon event in the olympics the rifle has a mass of 2.5 kg the bullet has amass of 0.02 kg after that shot the bullet travels at a speed of 525 m/s what is the total momentum of the rifle bullet system before the bullet is shot?

the momentum of the system must be ZERO just before the bullet is shot

Explanation:

As we know that initially the bullet is inside the gun with stationary condition

So here we can say that gun and bullet was both at rest initially

so we have

since both are at rest so we have

so total momentum of the system will be

So the momentum of the system must be ZERO just before the bullet is shot