题目
题目
单项选择题

A student walks 1.0 km east and then 3.0 km south. The student then walks 5.0 km west. The magnitude of the student's displacement is

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标准答案
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思路分析
The problem provides a sequence of movements and asks for the magnitude of the overall displacement. First, translate each leg into components: 1.0 km east gives +1.0 km in the x-direction (eas......Login to view full explanation

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