Basic Facts:
mass=20 grams
acceleration=0.0716
net force=1.432
Our Car:
Sara, Elizabeth, and I worked on this car together. Basically all our car was was a piece of cardboard and bottle caps as the wheels. Then we had a pipe connected to the two balloons so that we could blow it up easier and so when the air came out all of the air just came out of the pipe. This idea worked really well. What helped our car do so well is because it was very light weight but enough mass to let it be able to continue rolling.
For more information look at Sara's (she also has a video I believe)
http://www.facebook.com/notes.php?id=100000403791912#!/note.php?note_id=175786519131536
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