Determination of total Free-Fall time, t(FF), for M(16) to Totally Collapse M(94), from the extreme Vector displacement height of (h' = 25 miles

This Vector Physics Poster Graphic determines the Free-Fall time, t(FF),that the 16 Floor upper cubic block will take to fall and collide with the 94 Floor block directly below it. It is the time M(16) will take to fall through the Vector displacement height, (h'), to attain the required Collapse Velocity, V(f), and the required Collapse Energy, CE(94), to demolish the lower 94 Floor, intact, steel Tower.
The actual time it may take would be longer if a Terminal Velocity is reached during the M(16) fall, due to air resistance.
This Graphic does not take into account the resistance to air, but assumes a vacuum for ideal calculation purposes.