[Williams]

"How could those buildings fall at the speed of gravity ....?"

All objects fall to Earth at the same speed, regardless of size. As demonstrated by Galileo.

[free_for_now]

"How could those buildings fall at the speed of gravity ....?" All objects fall to Earth at the same speed, regardless of size. As demonstrated by Galileo.

True, but pancaking buildings don't and ones subjected to demolition do. The key problem with his argument is that these buildings didn't fall at free-fall. The thing is that once it started, the bolts holding the thing together did little to impede the momentum of the huge amount of mass impact each subsequent floor. Still, it was slowed, and would not have been in a controlled demolition.

[broncobilly]

All objects fall to Earth at the same speed, regardless of size. As demonstrated by Galileo.

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I think you mean “all objects regardless of mass.” Size has nothing to do with it, unless you are taking wind resistance into account.

[rednesss]

"All objects fall to Earth at the same speed, regardless of size."

In a vacuum, in our atmosphere, not even close to being true.