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Skating
Skating is an essential part of hockey.  In order for players to become elite they must become very efficient and fast at skating. The skate blade is a thin piece of steel and the player uses this too push off into the ice and propel forward.  If a player's skates aren't sharp enough the blade will slip due to a lack of friction and in most cases the player will fall.  When a player is gliding there is relatively low friction between the blade and the ice.  This allows players to maintain their speed throughout the ice surface while exhausting very little energy.  According to www.exploratorium.edu professional hockey players can reach speeds of 32 km/hr which is approximately 8.9 m/s. 


skating image
www.real-world-physics-problems.com/physics-of-hockey.html