this version is fixes so the train moves when you press the Acceleration buttons or the up/down arrows.
Here is a starter project for looking at the motion of a train. This program is not finished so you will need to download it and finish it yourself. Steps: 1) create scripts for +Accel and -Accel 2) show the graph sprite 3) create a drawing sprite for position - use the pen to draw the position of the train on the graph 4) do the same for velocity
