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Does freefall speed and nanothermite prove that 9/11 was a hoax or inside job?

The claims that freefall speed and nanothermite prove 9/11 was a hoax or inside job are part of broader conspiracy theories surrounding the events. However, these claims have been extensively examined and debunked by mainstream scientific and engineering communities.

Freefall Speed

The freefall speed of World Trade Center Building 7 (WTC 7) is often cited as evidence of a controlled demolition. NIST acknowledges that WTC 7 fell at a rate of free fall for approximately 2.25 seconds during its collapse1. However, this does not necessarily imply a controlled demolition. NIST's explanation involves a sequence of structural failures leading to a period of free fall before the building's descent slowed due to resistance from lower structural elements1.

Nanothermite

The presence of nanothermite in dust samples from the World Trade Center has been suggested as evidence of explosives being used. However, NIST found no corroborating evidence for the use of explosives or thermite in the collapse of the buildings3. Critics argue that the samples could have been contaminated and that there is no clear chain of custody for the dust samples3. Moreover, the use of nanothermite in a controlled demolition scenario is not supported by mainstream engineering scholarship3.

Mainstream Scientific Consensus

Mainstream scientific and engineering communities, including NIST and experts from various universities, have concluded that the collapses were primarily due to structural failures caused by fire and impact damage3 4. The controlled demolition theories lack scientific merit and have been extensively debunked by experts in structural mechanics and engineering3 4.

In summary, while freefall speed and nanothermite are often cited as evidence by conspiracy theorists, they do not provide conclusive proof of a hoax or inside job. The overwhelming consensus among experts is that the collapses were the result of fire-induced structural failures, not controlled demolitions.