2. Make a prediction (initial model) for what could be happening inside of the tube of the car that causes the car to "rollback” (i. e. change direction). Your response should focus on the
rubber band and not the mass. Then provide reasoning to support your initial model in terms
of energy transfers and conversions.
Initial Model:

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.