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Analysis & results
Trial #1Times for 5 feet: 1.31s & 1.52s
Total times: 9.69s & 3.18s Total distance: 7 feet/tiles Lateral distance: 1.5 ft Average speed 5 ft: 1.42s Average speed trip: 6.44s Mass * speed 5 ft: 188.86g*ft/s Mass * speed total: 856.52g*ft/s |
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Conclusion
Based on our findings, we can conclude that our car went faster and farther in trial 2, but straighter in trial 1. One reason for experimental error could be that we weighed the car when the balloon wasn't blown up. Another error could be that we added a piece of duct tape to make sure the balloon would stay on when we actually did it for a grade. A possible improvement could be that we used long balloon animal balloons to try and get more power and speed for our car. Our first car didn't go very well because it wasn't extremely reliable. Sometimes it would work and go fast and far and sometimes it would be a complete dud. The wheels weren't very stable and the balloon would fly off the car a lot. So that's why we switched to a totally different body for the car, with the new chicken wire body we could easily make sure the balloon was attached to the duct tape and would stay on the car.