All 3 WTC buildings collapsed at damn near Free Fall speed. You can see it in the videos. You can feelit in your bones, you can tell just from your PERSONAL experience throwing a ball up in the air and catching it, that they fell at the speed of gravity. You can also do the math yourself.

You can prove that one for yourself without anyone else's help. And its physics, not opinion, speculation, theory or conjecture.

The "Laws of Physics" are called laws for a reason.