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> 汽车在平直的公路上以20m/s的速度行驶，当汽车以5m/s 2的加速度刹车时，刹车2s内与刹车6s内的位移之比为 A．3：4 B．1：1 C．4：3 D．3：1

问题：

发布时间：2024-09-07

汽车在平直的公路上以20m/s的速度行驶，当汽车以5m/s ²的加速度刹车时，刹车2s内与刹车6s内的位移之比为

A．3：4 B．1：1 C．4：3 D．3：1

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提问用户：4k***dJ5

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