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Shooting a Gun

tjpapaleo

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What's everyone's favorite thing to do?  Obviously shooting a gun takes the gold. Shall we go into the physics of a marvelous gun?  Why not? Ok, let's see if we can find the speed of a gun recoiling using the law of conservation of momentum. So, we know the p =mv, and we know that we have a mass of a bullet and a gun, and then the speed of a bullet but no speed of a gun. And we know that Pi = Pf. So,  we use the equation mv of bullet + mv of gun = mv of bullet after it leaves the gun + mv of gun after. So then we do a little algebra to get the velocity of the gun after by itself. The equation would be MbVb/ (MbVb' + Mgun) and then you plug in all the numbers to get the recoil of the gun. That's all for guns today. Tune in next time for more physics. 

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