public State moveClassicModel(State s,
Simulates the physics for one time step give the input state s, and the direction of force applied. The input state will be directly
modified to be the next state. Physics simulated using one step of Euler's method on the non-linear differential equations provided by Barto
Sutton, and Anderson . Note that this model is not physically correct  but is left in code for historical comparisons. Optionally a
correct model can be used instead.
s - the current state from which one time step of physics will be simulated.
dir - the direction of force applied; should be -1, or 1 and is multiplied to this objects movementForceMag parameter. 0 would cause no force.
the input state, which has been modified to the next state after one time step of simulation.