在物理学中,“位移”和“路程”是两个不同的概念。下列关于两者的说法,正确的是:
Show the answer and explanation
Correct answer
A. 位移是矢量,路程是标量
Principle or equation
位移是描述物体位置变化的物理量,是矢量;路程是物体运动轨迹的长度,是标量。
Why this answer is correct
位移既有大小又有方向,是矢量;路程只有大小没有方向,是标量。
Example
物体沿圆周运动一周,位移为零,路程等于圆周长。
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