Momentum and Gliding Sometimes a skater will take advantage of momentum and their low posture they have gained to briskly glide along the ice. Skaters can propel themselves by pressing against the ice with their skate blades angled outward. While keeping their skates on the ground and transitioning the angle of their skates back and forth in a sinusoidal manor, they can swing their weight side to side. This will give the propelling motion without having to lift the skates off the ice and is more efficient.		Source: https://www.real-world-physics-problems.com/physics-of-ice-skating.html
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