Assertion: hurricane's wind speed | /r/CapableOf | equal four times the wind force
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text: Wind force on an object is a squared function (twice the wind speed equals four times the wind force), thus, the intensity scale is also a square in point value, e.g. 1 point for a 30 kn (35 mph) tropical depression and up to 25 points for a hurricane with winds above 150 kn (175 mph).