機場跑跳碰 - 拼圖
By Edward Lewis
at 2010-08-04T01:41
at 2010-08-04T01:41
Table of Contents
亂看英文blog得到的題目，暫且沒有正解，但應該討論的出來
(作者是有名數學家)
- 你在機場長長的航站大廈走道上，要從A端前往B端
A到B的部份路程設有行走履帶(walkway)，部分沒有。
你的行走速度是ｖ，履帶上行走則是ｕ+ｖ
問:
1. 如果你必須停下來繫鞋帶而耽擱一段固定的時間，
在履帶上繫鞋帶或在平地繫鞋帶，何者更有效率？
2. 如果你能以ｖ'的速度跑一段固定的時間(超過會累的樣子)，
在履帶上跑或是在平地跑更有效率？
3. [作者說這題是純粹理論性的，非專家可以考慮不作答]
如果上述的速度牽涉到相對論效應(ｖ,ｕ,ｖ'相對光速不可忽略)
原本討論的結果需不需要更正？ =皿=
= = = = =
jurian註解: 題目中有幾個條件並沒有特別指定，視需要假設並討論
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Tags:
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