Friction and air resistance are the two great obstacles to high-speed movement. Gerd Sommerhoff discusses these forces and shows that in certain circumstances they can be turned to advantage.
for Schools
(to 11.55)
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Friction and air resistance are the two great obstacles to high-speed movement. Gerd Sommerhoff discusses these forces and shows that in certain circumstances they can be turned to advantage.
for Schools
(to 11.55)
