| http://www.w3.org/ns/prov#value | - Reply sorry, but the benefits of a helmet are not any more psychological when hitting the hard flat surface of water than they are when hitting the hard flat surface of a slider or kicker. your equation is wrong: force = pressure times area. regardless, there is a point you are missing here. force is a vector quantity and thus must be calculated (at least in fluid dynamics), from multiple points. sin
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