Today is May 7, 2012. Today while working in class on my 20 percent project I learned that a pinewood derby car that is slower on one ramp may be faster on another. This is because the ramp could have a diffrent percent decline than another ramp which would change the push, and pull of the weight on the car. For example a car with the lead weight up front might be faster on one ramp, but may be the slowest on another.