Ice Skating

Ice is very smooth, slippery and hard. To move on it you need a pair of ice skates. Ice skates have blades that bite right into ice by melting it. However, this melting can be ineffective at lower temperatures.

http://alpha.montclair.edu/~kowalskiL/PHYSL/ice_skating.html

http://www.nordicskater.com/ http://www.nordicskater.com/YourSports/index.html Nordic skating (up to 50 miles on ice)

Downhill Ice Skating (Ice Cross Downhill) +1 http://www.redbullcrashedice.com