Pierre-Normand of Montreal, Canada wrote:
I just read Judy Wood's article and it seems prety bad. She clearly does not understand the law of conservation of momentum. She believes that if a floor falling on a floor below looses kinetic energy through disintegration then there would be little energy left to accelerate the second floor downwards. How little? It is not physically possible that less than half the momentum be transferred to the floor below unless it all magically slips to the sides of the tower. She also seems to believe that a collision can both be completely elastic and still loose energy, which again violates the laws of physics.