I don't think you did. If a normal person can destroy a cement pavestone your calc would put them in the 56 ton range... (You used square inches instead of radial inches, and seem to have linearly converted pounds per square inches to pounds per square feet so that if I can press a one inch button down with 10lbs of force then I can push a one foot tile down with 14,400lbs of force.) So I tried running the numbers myself and came up with two options based on Ryuko's mass and velocity.
Option one: Everything we see is happening as we see it and Ryuko changed her density to 57 times her base at the moment of impact. In which case it's impossible to know how strong Satsuki is.
Option two: Satsuki's cherry tap launched Ryuko into that wall at a speed just over 1600m/s which would take just over 86,400kg of force and for some unknown reason we see Ryuko travel in an arc and time is moving slowly.
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u/Bteatesthighlander1 Mar 09 '15
yeah uhh, no idea if I did that calc right. great thread tho.