ggans2 wrote:

Yeah at ten floors or about 120 feet per second? sure Ok..

Go figure it out for yourself. Here's everything you need

The buildings were 1350 feet tall (415 meters)

They took about 14 seconds to fall.

The equation for the time it takes a falling object to reach a given velocity is:

t = v/g

where

* t is the time in seconds

* v is the velocity in meters/second (m/s) or feet/second (ft/s)

* g is the acceleration due to gravity (9.8 m/s^2 or 32 ft/s^2)

Therefore v=tg

The equation to determine the time it takes an object to fall a given distance is:

t = √(2x/g)

where

* x is the distance from the starting point in meters (m) or feet (ft)

* √ stands for square root

* √(2x/g) is the square root of the quantity (2x/g)