To conclude my hypothesis was completely wrong and the fastest pipe was the small plastic pipe, which I predicted would be the slowest pipe. The average time the plastic pipe took to roll down the ramp was 0.86 seconds. The time was 0.01 seconds faster than the pipe that finished second, which was the steel pipe. The small plastic pipe had the smallest inertia, which was 0.000003 and finished first. Also the small plastic pipe had the smallest rotational and kinetic energy compared to the rest of the pipes. The steel pipe had a inertia of 0.000008 and finished second. Then in third place was the small wood pipe with an inertia of 0.000012 and in fourth place the small copper pipe, also with an inertia of 0.000012. The pipe with the slowest
