PURPOSE: To think about which road is faster and why.
DESCRIPTION: Two balls are launched to roll down two paths. The balls start from the same height with the same initial velocities. One path is a straight incline. The other path has a dip down and a rise up. Q: Which ball reaches the end first? (a) the ball on the straight track arrives at the other end first, (b) the ball on the track with the dip arrives at the other end first, or (c) the race is a tie - both balls reach the other end at the same time?
EQUIPMENT: High road low road apparatus.
SETUP TIME: None.