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Wapato,
My remarks in line (blue) with yours-
Thanks for the vids.
My remarks in line (blue) with yours-
I didn't want to muddy the waters with this. But I think saying knockdown doesn't exist at all may be missing the mark.
I never said that it doesn't exist. You cut out the portion of my post where I stated,
"For the most part, I am in agreement with the most of the order (descending importance) and almost every aspect that you offer for consideration save the extremely negligible effect of "knock-down". You could probably just exclude it from your list."
The effect is always there, always present and Newton's Third Law of Motion mandates it. But its actual contribution to what we witness when a person is shot is very small, hence my belief that it can be neglected in the list proposed by the OP.
I frequently hear something along the lines of "A bullet isn't going to send you flying through the air, otherwise it would send the shooter flying as well."
And that is truish.
In every sense it is true. The trajectory of the 185 pound person struck by the bullet in my example above would be hard to notice especially given the mechanical effect produced by the magnitude of the temporary cavity exceeding the ability of the person's torso to contain it.
However if you clothesline someone running by, or knock someone down with a punch the attacker isn't launched either. Because they're braced for it, and because a big part of it isn't that you're sending them airborn, it's that you're suddenly imparting some sort of rotation or motion and it knocks them off balance, and then gravity does the rest.
That's Newton's First Law of Motion (Inertia- a body at rest tends to remain at rest or a body in motion tends to remian in motion). The person's body is rotating about a nearly fixed axis in the case of the clothes' line which produces a change in direction about that axis imparting an angular moment (the momentum already being supplied by the person as they run). This has little to do with the effect under discussion here.
I've got a hunch if you went to the gunrange, loaded exactly one round in a powerful rifle/shotgun, held it loosely with open hands a little ways in front of your face (or even shoulder) and then locked your knees or started hustling sideways prior to firing you might well find yourself on the ground.
Sure either of those situations would likely cause someone to fall down. Give a shotgun or a centerfire rifle room to accelerate into your face and it's gonna hurt. That's why it is important to hold the butt of such firearms frimly against our shoulders when we fire them. But falling down from the pain induced by letting the shotgun/rifle accelerate into your face and being propelled irresistably rearwards by the shotgun/rifle are not the same thing. One is a reaction to the pain and damage of being smacked in the face, the other is a physical movement that one cannot resist.
I'd expect the same to aplly on the other end of the bullet.
Of course if you're actually hitting them center of mass you shouldn't impart much rotation, and if they're charging or braced to fire as well they'd probalby tend not to stumble and fall.
Anyway, for your viewing pleasure:
http://www.youtube.com/watch?v=KpQNoCuar7g&feature=related
http://www.youtube.com/watch?v=BY2lKEQm8hY&feature=related
Thanks for the vids.
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