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匀变速运动: s(t) = s_0 + v_0 t + (1)/(2) a t^2 。, m/s, m/s²(制动),何时 ?最大行程?
匀变速运动: s(t) = s_0 + v_0 t + (1)/(2) a t^2 。, m/s, m/s²(制动),何时 ?最大行程?
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