Students built and tested their marble roller coasters today. Videos should be posted to wiki page for their group. Homework: Go to
http://phet.colorado.edu/en/simulation/energy-skate-park and experiment with the skater. Try making more hills, fewer hills, etc. Make sure you look at the potential and kinetic energy (energy vs. position graph on the right hand side of the screen). Then go to
http://www.cstephenmurray.com/onlinequizes/physics/workandenergy/kineticvspotentialenergy.htm and take the quiz!
