Creative Speculation
In reply to the discussion: Here is the problem with the 911 conspiracy theory's...... [View all]zeemike
(18,998 posts)Cause it is not... and I can't let that stand.
Inertia is the resistance of any physical object to a change in its state of motion or rest, or the tendency of an object to resist any change in its motion. The principle of inertia is one of the fundamental principles of classical physics which are used to describe the motion of matter and how it is affected by applied forces.
The mass of a body determines the momentum p of the body at given velocity v; it is a proportionality factor in the formula:
p = mv
The factor m is referred to as inertial mass.
But mass as related to 'inertia' of a body can be defined also by the formula:
F = ma
Here, F is force, m is mass, and a is acceleration.
By this formula, the greater its mass, the less a body accelerates under given force. Masses m defined by formula (1) and (2) are equal because formula (2) is a consequence of formula (1) if mass does not depend on time and velocity. Thus, "mass is the quantitative or numerical measure of bodys inertia, that is of its resistance to being accelerated".
This meaning of a body's inertia therefore is altered from the original meaning as "a tendency to maintain momentum" to a description of the measure of how difficult it is to change the momentum of a body.
And by the way I do have an explanation for the apparent forward head movement but you won't like it much....I spent some time last night looking at those two frames and now have proof that what you say is forward movement is actually distortion caused by blur...and it is measurable in the frames.