If two cars are identical except for the amount of fuel in them, the car with more fuel will weigh more and go farther before running dry (if driven in similar manners).<p>If two vehicles have identical amounts of fuel and identical engines, the lighter vehicle probably will go farther before running dry (if driven in similar manners).<p>With rockets and missiles, you have weight, aerodynamics, fuel source, power source and, apparently most significant in this case, how heavy a warhead as variables.<p>AP should have at least marked its writethru to note that it contained a correction. Apparently either the writer, editors or all didn't understand these principles, hence the lack of scientific explanation and the factual error.<p>By the way: Anyone else seeing a rash of principle/principal confusion in copy?
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