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> 汽车由静止开始在平直的公路上行驶，0～50s内汽车的加速度随时间变化的图线如图所示。下面的有关说法正确的是 A．汽车的行驶的最大速度为20m/s B．汽车在40～50s内的速度方向和在0～10s内的速度方向相反 C．汽车在50s末的速度为零 D．在0～50s内汽车行驶的总位移为900m

问题：

发布时间：2024-09-10

汽车由静止开始在平直的公路上行驶，0～50s内汽车的加速度随时间变化的图线如图所示。下面的有关说法正确的是

A．汽车的行驶的最大速度为20m/s

B．汽车在40～50s内的速度方向和在0～10s内的速度方向相反

C．汽车在50s末的速度为零

D．在0～50s内汽车行驶的总位移为900m

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