I was kind of bothered by this. Newtons first law states that Force is equaLs to mass multiplied with acceleration. Tomove an object you need to exert force. Assume that we have a car moving constantly at the speed of 60mph. Since I said constant, then it means there would be no acceleration right? Since there's no acceleration, 0 m/s2 multiplied by the mass of the car would mean that there's no force or F = 0, right? Then, why would a car going at constant 60mph would hit a man and would send the man flying? The speed was constant, and there was no acceleration, which means no force, but why did the car move the man when in fact you need force to move something. Does this mean that I proved that Newton's law is quite wrong?
2007-09-18
21:48:36
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11 answers
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asked by
love_doctor
4
in
Physics