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Re: Official Kijiji Find Thread
Yeah where you go stuck is assuming that acceleration was constant. That one incorrect major assumption that you made. If acceleration is a constant, then velocity would be increasing at the same rate, and we all know that this is incorrect. If velocity increases at the same rate the position is only exponentially increasing by a factor of 2, which combined with you extrapolating a 1/4 mile to 1 mile has thrown that timing way out the window.
With another point or two (two position/time points, one more velocity point) you can determine almost all the information necessary to draw out the curves and be able to see how fast it really is.
All comes down to basic derivatives, knowing that if you derive position as a function of time you get velocity, and if you derive velocity as a function of time it becomes acceleration, and if you derive acceleration you end up calculating jerk movements which wreck havoc on axles and other stationary parts in the drivetrain.
Originally posted by witchcraftz
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With another point or two (two position/time points, one more velocity point) you can determine almost all the information necessary to draw out the curves and be able to see how fast it really is.
All comes down to basic derivatives, knowing that if you derive position as a function of time you get velocity, and if you derive velocity as a function of time it becomes acceleration, and if you derive acceleration you end up calculating jerk movements which wreck havoc on axles and other stationary parts in the drivetrain.
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