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Comment Re:But since we are trying to compare quantities.. (Score 1) 141

Gp wasn't suggesting computing energy, just pointing out that a bare mv results in a vector, not a scalar that can be easily compared. What we want is m|v|, which can be computed as m * sqrt(v^2). And anway, for "energy" computation purposes mv^2 will get you double the "true" figure (assuming you were interpreting it as kinetic energy), since K.E. = 0.5 * m * v^2.

I like work; it fascinates me; I can sit and look at it for hours.