Without any doubt, Steve Thompson's work on the Zapruder film is the very best available (the best I've seen)!
I don't understand how anyone could watch this and not easily see that the fatal shot came from the front, and threw Kennedy's head toward the back of the car. The thrust of the car has nothing to do with this at all. This is pure physics. Any other conclusion is mis-informed and very likely an effort to be obscurant.
This is conclusive evidence of a conspiracy, IMO...
Thanks for the good work
Does shooting someone really cause them to fly backwards?
https://www.quora.com/Does-shooting-someone-really-cause-them-to-fly-backwardsTim Dees, Retired cop and criminal justice professor
Reno Police Department, Reno Municipal Court
No. This does not happen. In fact, it could not happen.
Newton's Third Law of Motion, cribbed here from Wikipedia, states: "When a first body exerts a force F1 on a second body, the second body simultaneously exerts a force F2 = −F1 on the first body. This means that F1 and F2 are equal in magnitude and opposite in direction." You can see a practical demonstration of this with one of those Newton's Cradle desk toys. Swing one of the steel balls outward and let it fall to hit the rest, and one of the balls on the opposite end moves. Swing two balls, and two on the opposite end move.
If a bullet had enough force behind it to hurl someone through the air when they were hit, a similar force would act on the person holding the gun that fired the bullet. This clearly doesn't happen, even when the bullets in question are big with a large powder charge behind them, like a .50 caliber or a rifled slug from a shotgun.
Most bullets--the actual projectile, not the entire cartridge that includes the powder, primer and casing--weigh only a few grams. A 125 grain .357 Magnum bullet (medium large, as handguns go) weighs about 8 grams, about 1/3 ounce. Coming out of the gun barrel, it's moving at around 750 miles per hour (1100 feet per second--this varies with the ammo and firearm in use, but is generally somewhere between 600 and 1800 feet per second), and slowing down from air friction. Converting that momentum calculation into units of force taxes my high school physics props (and someone here who is smarter than me will chime in and do it), but I think it's safe to say it's not nearly enough to move a 200 lb. man, or even a 5 lb. rabbit.
If the bullet had enough momentum to move something that large, it would probably just pass through on its way elsewhere, delivering a fraction of its momentum into the unfortunate soul who got in the way before moving on. This, in fact, does happen with high-velocity projectiles, especially those that are solid and hard so they keep their shape and don't deform. This is why most law enforcement officers have hollow-point bullets loaded in their guns. Hollow points are made of relatively soft lead and "mushroom" as they hit, offering more surface area and delivering most or all of their momentum into the target. This produces a larger and more damaging wound channel (please keep in mind that these were designed to kill people) and doesn't over-penetrate into Grandma, standing behind the bad guy.
When people get shot, especially in a vital area like the torso, they generally fall down in place. They aren't driven backward as if pushed by a giant invisible hand of fate. Cops who get hit with bullets into their soft body armor generally report the sensation as being like a bee sting or a hard punch, not a charging bull. The stuff you see in movies is just that--movie stuff.
