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mfb
#5
Nov5-12, 04:38 PM
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P: 11,589
A rock will give you other issues than acceleration of the head, I think.
In addition, rocks, punches and similar impacts are effective because they apply a strong force over a short timescale. Drag forces would be nearly constant if Flash runs in a straight line, and predictable even in curves. It is possible to balance another human (and even a small car) on a head, this corresponds to a force of ~800N parallel to the spine.