1. The problem statement, all variables and given/known data A buffer stop at the end of a railway track has a moving part of mass, 2 Mg, which can move 2.3m parallel to the track. The force resisting the motion of the moving part is given by cxdot where xdot is the velocity and c is 200kn/m s What is the greatest speed with which a train, of mass 100 Mg, can hit the buffer stop if, at the end of its 2.3m travel is not to exceed 1.5m/s? Assume that after impact, the train and the moving part of the buffer stop move together. 2. Relevant equations 3. The attempt at a solution I started with the impulse momentum equations Train: -F t = 100x10^3 (1.5-x) where x is the initial velocity of the train Buffer: (F-cxdot) t = 2x10^3 (1.5-0) I do not know how to proceed because I have not seen an impulse momentum equation which includes a damper. Please help!