7-1 点沿其轨迹运动时 -题库考试答案搜索网

7-1 点沿其轨迹运动时

单选题

2021-09-08 14:40

A、若at o 0、，an 1 0则点作变速曲线运动； B、若at = 常量、an 1 0，则点作匀变速曲线运动；
C、若at 1 0、an o 0，则点作变速曲线运动；
D、若at 1 0、an o 0，则点作匀速直线运动。

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正确答案

C

试题解析

标签：安徽教育在线安徽科技学院理论力学

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