國立台灣師範大學物理系 物理教學示範實驗教室(網站) 物理問題討論區 (黃福坤)
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討論區首頁 >>物理動畫:註冊者可以取得動畫相關檔案 >>國外網友針對本網站動畫所提出的疑問>>reaction time
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標題:reaction time
1:黃福坤 (研究所)張貼:2003-04-22 07:53:00:
Hi Pro Hwang,

Interesting animation of reaction time, car braking to a stop..... .

I would suggest that you consider adding a constant of 0.5 second for mechanical reaction time for the brakes to the perception/reaction time of human.

The total reaction time taken would then be more realsitic - real world situation, before the brakes starts to engage.

Warm regards.


Kelvin Koay
traffic Accident reconstruction expert from Singapore
2:黃福坤 (研究所)張貼:2003-04-22 08:22:00: [回應上一篇]
Dear Prof. Fu-Kwun Hwang,

I am a high school student in the 12th grade and San Marino High. In my physics class this week we were assigned to find an equation that governs the use of any part of an automotive vehicle. Searching for an equation, I came upon your site, more specifically, your simulation of reaction time and car accidents. I know time is very valuable, and you must be very busy, but if you could send me an equation that governs the the breaking distance with respects to reaction time, velocity, friction, etc., I would greatly appretiate it. If there is no such equation, if you could send me any mathamatical proof for how something relating to mechanics works, that would be appretiated as well. Thank you for your website, which is very informative and helpfull.
Adrian Lee

p.s. my email is eatmyrice2001@yahoo.com

thanks again
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