Concord Consortium
The Concord Consortium: Molecular Workbench: Friction and Movement
Explore how friction between a surface and tires affects the movement of a bicycle.
Science Education Resource Center at Carleton College
Serc: Conservation of Energy of While Rolling Down a Hill
A real-life example of a ball rolling down a ramp to see whether mechanical energy really is conserved when objects roll down hills. Students analyze video clips of children rolling down a driveway on roller blades and various bikes and...