There was no controlled demolition. That was made up by people who want to discredit the US Government. Controlled demolitions (from footage I've seen) start from the bottom- which Conspiracy Theorists conveniently ignore. There where NO traces of thermite [sic], despite claims to the contrary by Conspiracy Theorists who claim that burning jet fuel would not cut through the steel. However, the steel did not need to be cut through in order to cause a collapse, it only needed to be significantly weakened- which is what the burning jet fuel did. I won't go into the physics and science of it, but if you are interested, there are thousands of FACTUAL websites that discredit the Conspiracy Theories, who in fact resort to lies, misquoting people and actually claiming that people said things they in fact DID NOT. According to some Conspiracy Theorists, "someone" supposedly planted explosives all through the building prior to the attacks, without being noticed by anyone. They all appear so surprised that two buildings, built at the same time in an identical fashion should collapse in the same way after such an incident, without further human 'intervention'. Perhaps they haven't seen documentaries on the building of the WTC Towers, they clearly indicate that a great number of corners were cut to save costs. The steel was more or less like huge pieces of puzzles. If they are looking for someone to blame for the manner in which it collapsed, perhaps they should research the building of the Towers first.
inclined plane
a computer controlled gyroscope, or a series of accelerometers.
inclined plane
No, the second tower (the one which was hit by the second plane) collapsed a few minutes after the first tower.
The speed of the ball can be determined using the law of conservation of energy. The initial potential energy of the ball is converted into kinetic energy as it rolls down the inclined plane. Assuming no energy losses, the speed of the ball at the bottom of the plane can be calculated using the equation v = √(2gh), where v is the speed, g is the acceleration due to gravity (9.8 m/s^2), and h is the height (50 cm = 0.5 m). Plugging in the values, the speed of the ball when it reaches the bottom of the plane is approximately 3.13 m/s.
On 9/11 2001 the Twin Towers were destroyed by controlled demolition. The US government has claimed that the towers fell as a result of plane and fire damage but provide absolutely no valid scientific evidence whatsoever to support this theory. What evidence there is points only to the use of some form of controlled demolition.
Al-Qaeda hit 2 planes (on purpose) into WTC1 & WTC2. On 9/11 2001 the Twin Towers (WTC1 & WTC2) were destroyed by controlled demolition. The US government has claimed that the towers fell as a result of plane and fire damage but provide absolutely no valid scientific evidence whatsoever to support this theory. What evidence there is points only to the use of some form of controlled demolition.
!. They Hijacked an American Airlines plane. 2. They flew it into the towers.
the people in the towers and the people hired to steer the planes.
There were no children on the plane only adults.
8.46am
North Tower .
it was 10:30 when both towers come down.
The event was very well filmed, news crews were rapidly on the scene. The towers did not explode prior to the plane crash.
yes
terrorists did'nt like us
United Airlines