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Originally Posted by CheeseFrog
So Al'Qaeda had a contingency plan, big whoop. Whats so hard to believe about them planting explosives just in case the planes weren't enough? But explosives don't affect the acceleration of gravity, which is what Linkster is saying. So it must have been brought down by some gravity amplifying device, right Linkster? 
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Explosives dont help the acceleration of gravity - but they sure do accelerate disintegration of building materials underneath a falling object to make the friction effect negligible - therefore speeding up the collapse to near that of freefall
I never said that something didnt help gravity - I was saying there was no way gravity alone (and yes I understand that the weight of the 20 floor section was great) brought the buildings down - something helped it along
Like I said, Im not a conspiracy theorist - I just know science well enough to know that there had to be something else that caused those buildings to collapse that fast - the weight of the building collapsing on itself - no matter how damaged - coupled with gravity would have taken well over 25 seconds.
The only other fact I can find that doesnt come from conspiracy websites is that many people had photos of molten metal in the ground - and videos - and some up to 6 weeks after the collapse. Based on the fact that if all of the fuel had burned inside the building - it would have burned for 10 minutes approximately - then the office materials, furniture, and wallboard would have taken over - but none of these materials, including jet fuel or diesel fuel burn hot enough to melt metal other than aluminum and some other low strength alloyus that were not used in building skyscrapers - the only substance that is plausible would be thermite related - whatever that leads to