The JFK Assassination and the Head Shot

Zapruder Frames Z312 and 317

The two frames shown in the figure are before and after the head shot makes impact. Note that the actual impact was captured in frame Z313. . At the time the shot was fired, the limousine was directly in front of Zapruder’s view. The debate about the direction of this shot has gone on for years. However, using the film and the concept of conservation of momentum, we can clearly argue that this shot was from the front direction.

On these figures, the angle of the head tilt is marked with a pair of white lines. The angle starts out at about 150 degrees. After the shot it expands to 180 degrees. This is clear proof of the momentum moving in the rear direction and expanding the angle. Note that had this shot entered from the rear, the angle would have reduced to about 120 degrees or less.

It is important to note the position of JFK’s body during this sequence of frames. He sitting up in his seat without his back against the back seat. Any change in acceleration of the limo can move his body forward or back. However, the motion is nothing as severe as the moment the kinetic energy from the bullet impacts his head. Watching the film in real time shows the transfer of momentum and the significant rear movement. This shot was no doubt fired from the front position relative to the limo position.

from Anthony Rante - Author of "The JFK Assassination: A Technical Review of the Evidence"