On Tue, Apr 1, 2014 at 12:24 AM, David Hutto <dwightdhu...@gmail.com> wrote: >> >> >> (1) v = u + at >> >> (2) s = 1/2(u + v)t >> >> (3) s = ut + 1/2(at^2) >> >> (4) v^2 = u^2 + 2as >> >> >> >> Only (1) and (3) are needed. >> > >> > Okay, what's u here? Heh. >> >> u is the initial velocity; v is the velocity after accelerating at a for >> time t. > > > This assumes that the viscosity is in a state of superfluidity, and in a > perfect state between itself, and it's traveling environment.
I fail to see how this is relevant. I would assume that the amount of friction is already modeled in the acceleration constants; if it were zero then the brakes would be nonfunctional and the train would not be able to accelerate or decelerate at all. In any case, a change in friction simply works out to a change in acceleration. The equations above still hold true. -- https://mail.python.org/mailman/listinfo/python-list
