跳去內容

位移

出自維基百科,自由嘅百科全書

位移wai6*2 ji4英文displacement)係對兩個物體嘅位置改變嘅最短距離,日常生活入面又可以叫做直線距離

概論

[編輯]
綠色虛線線係代表藍色實線兩邊嘅位移
睇埋:古典力學

位移喺古典力學計數嗰陣成日會用。假設有件物體由 呢個位置郁去新位置 嗰度,佢嘅位移-寫做「」或者「」-就係 ,例如有件物體喺一個三維空間入面由 呢點郁去 嗰點度,佢嘅位移就係 -等如 。位移係有方向性嘅物理量-即係一個向量(vector),所以除非係喺一維空間,一個位移冇得淨係用一個數值表達得嗮,而係要用好幾個數值嚟表達[1]

位移同距離係兩個唔同嘅概念:假如一件物體用一條非直線嘅路線移動,噉佢行過嘅路線反映佢行咗嘅距離,而位移會係佢起點同終點之間嘅直線距離[1]

睇埋

[編輯]

[編輯]
  1. 1.0 1.1 Tom Henderson. "Describing Motion with Words". The Physics Classroom.
pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy