S'=12t³-2t+2 (V) = 12*4³-2*4+2 = 762 м/с.
E=mv²/2 = 5*762²/2 = 1451610 Дж.
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S'=12t³-2t+2 (V) = 12*4³-2*4+2 = 762 м/с.
E=mv²/2 = 5*762²/2 = 1451610 Дж.