本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB数学
[问答题]
Can the displacement vector for a particle moving in.iu :rirs*q+w two dimensions ever be longru *riiq:ws+. q54f+qr h1ey3hw2o:t)q agcaer tac 1ehg)hq4rq 5 +ytf3:qoaw 2han the length of path traveled by the particle over the same time interval? Can it ever be less? Discuss.
参考答案: The displacement can be thought of as the
“straight line” path from the initial location to the final location. The length of path will always be greater
than or equal to the displacement, because the displacement is the shortest
distance between the two locations. Thus
the displacement can never be longer than the length of path, but it can be
less. For any path that is not a single
straight line segment, the length of path will be longer than the displacement.
本题详细解析:
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