The coaster has exactly one hill. There is an additional 1.0 meter of level track after the hill. Conduct ten speed trials, according to the procedure below. Begin timing on a stopwatch when the marble starts rolling. Record your data on the Data Collection Page.
Repeat steps a through f, for the remaining nine trials.
Examine the data posted on the project web page, collected from all of the participants, by clicking on Project Data in the navigation bar. Look for similarities and differences in the results. Formulate a written hypothesis describing the construction material and track design to use for the fastest roller coaster. Justify your hypothesis based upon your data analysis. If you are participating in the competition portion of the project, you will build your coaster using this material and track design.