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颱風風速快一倍，動能變幾倍？用動能看懂強陣風 Wind Twice as Fast in a Typhoon: How Much More Kinetic Energy?
薔琵颱風帶來 10 級、甚至 17 級強陣風，全台上千件招牌災情。風速只快一倍，動能卻變 4 倍，因為動能和速率的平方成正比。Typhoon gusts reached level 10, even level 17. When wind is twice as fast, its kinetic energy is 4 times bigger, because kinetic energy depends on speed squared.
