1. Given the challenge and the performance of your car on Test Drive #1, what change(s) will you make for Test Drive #2?

we were definitely stuck on what to do for our second test. but then we thought that maybe we could combine our first two tests to make a better car. so I got the weel to finally work while Coby worked on powering it.
2. What differences did you predict these changes would make in your car’s performance? What makes you think this?

it definitely worked better in speed than our last test.

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?

I feel like if our design was a bit lighter, then it would move a bit further.

4. What worked better the second time?

Well, we got the wheels and the rubber band to make it work.

5. What still is not quite working?

It did not go as far as our slingshot idea.

6. What questions do I have?

what would happen if the design was lighter or made with different materials?

7. What might I try next?

maybe design it to be  lighter or make it with different material

8. Explain the energy transfer that is taking place in the racer.

the rubber bad at the top stretches back before contracting when launched. that energy helps the car move forward with a small blast of speed.