The Great Rolling Derby

The AP students had a "Great Rolling Derby" at the end of the winter term.  The assignment was to build/find something that would roll to the end of the 6 ft long 8 degree incline that I made in my basement.

There was some creative thinking, elbow grease, engineering, and cookie eating, and we took a moment to remember inertia.

The winner is... Kyle!  

Here are the entries, ranked from top to bottom:

Actually, I entered my son Anders, too, but you can see how he placed:

We'll have to work on that.