If a bullet is fired from a gun.We can can calculate the recoil velocity by two ways1) momentum of bullet = momentum of gun2)total momentum before firing = total momentum after firing.Can anyone explain me these two methods as the answer is +ve in 1) case and-ve in 2) case

If a bullet is fired from a gun.We can can calculate the recoil veloci

1.	If a bullet is fired from a gun.We can can calculate the recoil velocity by two ways1) momentum of bullet = momentum of gun2)total momentum before firing = total momentum after firing.Can anyone explain me these two methods as the answer is +ve in 1) case and-ve in 2) case
Answer» It is +ve in 1 CASE as in that the MOMENTUM of gun and BULLET is of before firing In 2 case the momentum of gun will be in NEGATIVE as the gun recoils

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If a bullet is fired from a gun.We can can calculate the recoil velocity by two ways1) momentum of bullet = momentum of gun2)total momentum before firing = total momentum after firing.Can anyone explain me these two methods as the answer is +ve in 1) case and-ve in 2) case

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