Jean Ceulemans Posted July 24 Share Posted July 24 (edited) On 7/25/2024 at 12:19 AM, W. Niederhut said: I used to teach physics, Jean. This isn't rocket science. If M1 is the mass of JFK's head and M2 is the mass of the bullet, and V1 is the velocity of JFK's head before impact, and V2 is the velocity of the bullet before impact, and V1' is the velocity of JFK's head after impact, and V2' is the velocity of the bullet after impact, then, M1V1 + M2V2 = M1V1' + M2V2' (+M3V3) (Where M3 and V3 are the mass and velocity of the displaced skull and brain matter) Ergo, he was hit by a fatal bullet fired from the front and right of the limo. Newton's Law of Conservation of Momentum. That´s not all the subject was about, you can take some other factors in consideration, I´m not going to repeat them, it´s self-explaining. Edited July 26 by Jean Ceulemans Link to comment Share on other sites More sharing options...
W. Niederhut Posted July 25 Share Posted July 25 7 minutes ago, Jean Ceulemans said: That´s not all the subject was about, you can thake some other factors in consideration, I´mm npot going to repeat them, it´s self-explaining. How about an old-fashioned physics equation, Jean? The Lone Nutters can try to twist that around, rhetorically, as much as they want, but it doesn't get any more "self-explanatory" than a mathematical equation expressing Newton's Law of Conservation of Momentum. It doesn't matter if M2 is a bullet, a baseball bat, or a frying pan. The equation still holds. There was no momentum vector originating from the TSBD that could have slammed JFK's head violently backward. (And it wasn't de-cerebrate posturing. The backward motion of the head was instantaneous.) If M1 is the mass of JFK's head and M2 is the mass of the bullet, and V1 is the velocity of JFK's head before impact, and V2 is the velocity of the bullet before impact, and V1' is the velocity of JFK's head after impact, and V2' is the velocity of the bullet after impact, then, M1V1 + M2V2 = M1V1' + M2V2' (+M3V3) (Where M3 and V3 are the mass and velocity of the displaced skull and brain matter) Link to comment Share on other sites More sharing options...
Sandy Larsen Posted July 25 Share Posted July 25 4 hours ago, W. Niederhut said: M1V1 + M2V2 = M1V1' + M2V2' (+M3V3) (Where M3 and V3 are the mass and velocity of the displaced skull and brain matter) Yep, conservation of momentum is conserved, even though energy is lost in the form of heat. Now, if you can somehow get a lot of mass to exit -- fast --in the direction of the bullet (M3V3), it's theoretically possible to get the now-lighter skull to reverse direction and move back toward the gun (M2V2). Which is what Professor Alvarez recognized in the equation and what he set out to demonstrate in a real experiment. He eventually got a melon bound up in tape to do just that, and LNers have been praising him since. But, alas, it was but a parlor trick.The professor could never get the correct amounts of masses moving at the correct velocities to show that that was indeed what happened. Link to comment Share on other sites More sharing options...
Bill Fite Posted July 25 Share Posted July 25 1 hour ago, Sandy Larsen said: But, alas, it was but a parlor trick. If the target melon is placed on a flat surface, one can impart backspin to the target melon by hitting it below the midpoint - kind of like a cue ball in pool. But, if the target is suspended from below by a spring or from above by a rope like a head is suspended by the neck -> no backspin. In France, there are plenty of documentaries on WW2 shown on TV. I've seen one in the past where the SS lines up victims in front of a trench and then shoots them in the back of the head -> they all fall forward. A week or so ago there was another one on with a segment on the rape of Nanking. The Japanese soldiers had 2 victims kneeling in front of them, approached them from the back with rifles and shot them in the back of their heads -> they fell forward. I believe in the Conservation of Momentum, not only in the film, but also in the pattern of bullet fragments in the skull X-rays. Link to comment Share on other sites More sharing options...
Bill Brown Posted July 25 Share Posted July 25 11 hours ago, Bill Fite said: If the target melon is placed on a flat surface, one can impart backspin to the target melon by hitting it below the midpoint - kind of like a cue ball in pool. But, if the target is suspended from below by a spring or from above by a rope like a head is suspended by the neck -> no backspin. In France, there are plenty of documentaries on WW2 shown on TV. I've seen one in the past where the SS lines up victims in front of a trench and then shoots them in the back of the head -> they all fall forward. A week or so ago there was another one on with a segment on the rape of Nanking. The Japanese soldiers had 2 victims kneeling in front of them, approached them from the back with rifles and shot them in the back of their heads -> they fell forward. I believe in the Conservation of Momentum, not only in the film, but also in the pattern of bullet fragments in the skull X-rays. I haven't seen the footage you're referring to. Those who were shot in the head, were they on their knees? If so, of course they're going to fall forward, regardless of where they were shot from. Link to comment Share on other sites More sharing options...
Sandy Larsen Posted July 26 Share Posted July 26 18 hours ago, Bill Brown said: Those who were shot in the head, were they on their knees? If so, of course they're going to fall forward, regardless of where they were shot from. I don't know why you say that Bill. If a person is upright but on their knees, they could fall any direction (if not pushed). For example, if they are unconscious. Link to comment Share on other sites More sharing options...
Bill Brown Posted July 26 Share Posted July 26 4 hours ago, Sandy Larsen said: I don't know why you say that Bill. If a person is upright but on their knees, they could fall any direction (if not pushed). For example, if they are unconscious. Yes but I was working under the assumption that if they were on their knees, they were leaning a bit forward. Link to comment Share on other sites More sharing options...
Ron Bulman Posted July 30 Author Share Posted July 30 (edited) From JFK trying to Give Peace A Chance, to Imagine being peaceful to yesterday being described as communistic at the Olympics. I know it was a response to a McCartney song but this one makes me think more of Dulles or LBJ for starters. Featuring George Harrison on slide guitar. Edited July 30 by Ron Bulman Link to comment Share on other sites More sharing options...
Ron Bulman Posted July 30 Author Share Posted July 30 In case anyone missed it. Olympics commentator fired for making controversial John Lennon statement (msn.com) Link to comment Share on other sites More sharing options...
Matthew Koch Posted August 13 Share Posted August 13 Very Wise Words! ThIs a test to see if a conservative commenting on a thread that isn't on topic gets the thread moved ; ) Link to comment Share on other sites More sharing options...
Kevin Balch Posted August 13 Share Posted August 13 On 7/23/2024 at 7:29 AM, W. Niederhut said: Thanks for the info, Jean. My father spent the prime of his youth with Antifa--fighting the Nazis, (in the U.S. 753rd Tank Battalion) from North Africa to Italy, France, and Bavaria, but I don't think he had an opportunity to learn some of these neighborly Belgian niceties. The Third Reich surrendered exactly four days after my father's 23rd birthday. Below: The U.S. 753rd Tank Battalion lands in southern France in Operation Dragoon (August 1, 1944) Surveys of US servicemen during WW2 suggest that many were anything but “antifa”. https://www.washingtonpost.com/history/2021/12/20/greatest-generation-survey-race-sex/ Link to comment Share on other sites More sharing options...
Kevin Balch Posted August 13 Share Posted August 13 (edited) On 7/24/2024 at 3:19 PM, W. Niederhut said: I used to teach physics, Jean. This isn't rocket science. If M1 is the mass of JFK's head and M2 is the mass of the bullet, and V1 is the velocity of JFK's head before impact, and V2 is the velocity of the bullet before impact, and V1' is the velocity of JFK's head after impact, and V2' is the velocity of the bullet after impact, then, M1V1 + M2V2 = M1V1' + M2V2' (+M3V3) (Where M3 and V3 are the mass and velocity of the displaced skull and brain matter) Ergo, he was hit by a fatal bullet fired from the front and right of the limo. Newton's Law of Conservation of Momentum. Do you believe the limo stopped? What is the velocity of the displaced skull and brain matter? Edited August 13 by Kevin Balch Link to comment Share on other sites More sharing options...
Sandy Larsen Posted August 13 Share Posted August 13 34 minutes ago, Kevin Balch said: Your momentum equation assumes the mass of the head was conserved. It was not. In his equation, W separated the parts of the head that separated from it and represented its momentum as M3V3. Since the separated mass broke into multiple pieces, M3 must therefore represent its center of mass. And V3 must represent the center's velocity. Link to comment Share on other sites More sharing options...
Kevin Balch Posted August 13 Share Posted August 13 2 hours ago, Sandy Larsen said: In his equation, W separated the parts of the head that separated from it and represented its momentum as M3V3. Since the separated mass broke into multiple pieces, M3 must therefore represent its center of mass. And V3 must represent the center's velocity. Can you show this on a vector diagram? Link to comment Share on other sites More sharing options...
Sandy Larsen Posted August 13 Share Posted August 13 1 hour ago, Kevin Balch said: Can you show this on a vector diagram? I don't have the right tools or data to do that. Even if I did, I don't have the inclination. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now