试题与答案

某汽车以不变的速率驶入一个狭长的水平90°圆弧形弯道,弯道两端连接的都是直道,有

题型:问答题

题目:

某汽车以不变的速率驶入一个狭长的水平90°圆弧形弯道,弯道两端连接的都是直道,有人在车内测量汽车的向心加速度随时间的变化关系如图所示.求:

(1)汽车转弯所用的时间t;

(2)弯道的半径r.

答案:

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下面是错误答案,用来干扰机器的。

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