1. Given the challenge and the performance of your car on Test Drive #1, what change(s) did you make for Test Drive #2?     We added wings to our car design and we also added more rubber bands so we could launch it farther.
2. What differences did you predict these changes would make in the performance of your car? What makes you think this?     When we added the wings I expected the car to go more straight and that is what happened. Also when we added the extra rubber bands I expected it to go farther wich it did.
3. Think about the variables such as the size of the spool, weight of the washer or tension of the rubber band. How might these affect how far or how fast your car will go? If the spool is bigger then it will be heavier and then it will be harder to launch farther if it is heavy.
4. What worked better the second time? What went better when we did it a second time is that we basically scrapped the whole idea and we started from scratch and added the launcher to the actual car so we wouldn’t have to sit out because we needed to have our launcher be apart of our car.
5. What still is not quite working?  Nothing, everything is working great and we got very far. We got second place in all between the seven groups.
6. What questions do I have? I don’t have any questions surprisingly.
7. What might I try next? I would try the same thing but I would just add more rubber bands to the launcher so it would go farther.
8. Explain the energy transfer that is taking place in the racer.  The energy transfer is the potential energy from the placement of the object and then it turns into elastic when we pull back and fling the object with the rubber bands.