Reviews the four types of friction (static, sliding, rolling, fluid) and how they act on objects.
Find out why water creates a type of friction called drag and how a swimmer can reduce drag to swim faster.
Discover why golf balls have dimples and how dimples on the surface of vehicles could improve fuel efficiency.
Discover how to find the terminal velocity of a penny dropped from a skyscraper and whether the penny will be traveling fast enough by the time it reaches the ground to damage materials or harm people.
Try to stop the vehicle right behind traffic without running into it at this site.