A Waste of Energy By: William Drougton, William Gary, Christopher Little, and David Zeanah

Theoretical Speeds: v1= 3.28 ft/s v2= 3.84 ft/s v3= 4.10 ft/s vball= 6.45 ft/s

Vavg=1.88 ft/s Eloss=.00852 J

Vavg=0.784 ft/s Eloss=0.0167 J

Vavg=1.77 ft/s Eloss=0.0161 J

mcvc=mbvB VB=0.295 ft/s

Vavg= 1.23 ft/s Eloss=0.285 J

Summary The reason for this loss of energy was due to the friction between the car’s tires and the track as well as the ball and the screws. Air resistance may have also played a significant role. The sound of the car rolling along and the ping of the ball against the screws was another sign of lost energy.