Предмет: Физика, автор: 487998

вычислите перемещение тела за вторую секунду движения ,если скорость скорость зависит от времени...

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Автор ответа: kir3740

$Delta x = intlimits_1^2 (3t^2-4t+1)dt = (t^3-2t^2+t)|limits_1^2 = \\ =(8-8+2)-(1-2+1) = 2$

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