The muzzle velocity of a 50.0g shell leaving a 3.00 kg rifle is 400m/s what is the recoil velocity of the rifle

Here if we consider bullet and gun as a system then we can say that momentum of the system will remain conserved

so we will have

now we know that

now we will have

so gun will recoil with speed 6.67 m/s

labor day, patriot day, leaves start to change colors then fall from the tree

i think its d if wrong im sorry