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по горизонтальному столу катиться шарик массой 400 граммовс постоянной скоростью 15см/с чему ровна его кинетическая энергия
Ответы 1
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m=400г.=0,4 кгV=15см/с=0,15м/скинетическая энергия = массе шара* квадрат скорости /2E=(m*V^2)/2=(0.4*0.15^2)/2=4.5*10^-3 Джоулей.
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Автор:
sweeney - 6 лет назад
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