An investigation into friction on the ski slopes. Does waxing skis make them faster? An 8-year-old girl tests three different types of skis - unwaxed, waxed, and self-waxing. She tests each type ...
An investigation into friction on the ski slopes. Does waxing skis make them faster? An 8-year-old girl tests three different types of skis - unwaxed, waxed, and self-waxing. She tests each type ...
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