However, I'm unable to transfer the equation in a Python program to simulate the braking distance. This formula is also mentioned in the paper Observer Based Traction/Braking Control Design for High Speed Trains Considering Adhesion Nonlinearity. The empirical formula $F_ = a+bv+cv^2$ describes the resistance of each wagon regarding different factors (a independent to the velocity, b directly proportional to the speed and c directly proportional to the square of the speed). I found a very interesting website about the accretion resistance of a train. At $t_1$ the the train starts braking until it stops. Every wagon has its own mass $m_i$ because the number of passengers per wagon is different. At $t_0 = 0$ the train has the velocity $v_0$ without any acceleration $a_0 = 0$. I would like to simulate the braking distance of a train with n wagons. Thomas K Asks: Simulation of the braking distance of a train with n elastically coupled wagons
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