1. An example of a force diagram of a puck as it moves along a track? 2. An example of a force of a mass hanger as it moves towards the ground? 3. An example of a force diagram for the system of puck and mass hanger as they move together? 4.Do you expect the acceleration of your system to be greater than, smaller than or equal to the acceleration for the frictionless pulley system of a car and a mass hanger as they move together?