试题与答案

（14分）在一直线的宽公路上，某车以2m/s2的加速度由静止启动，当加速到24m

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题型：计算题

题目：

（14分）在一直线的宽公路上，某车以2m/s2的加速度由静止启动，当加速到24m/s时，立即停止加速，同时以6m/s2的加速度刹车，试求此车在13s末及18s末的速度。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：D

考点：匀变速直线运动
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       A graduation ceremony is a custom   1   takes place   2   students   3   from a school . Usually the
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