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Calling all nerds- MATH QUESTION related to speeding

2130 Views 12 Replies 8 Participants Last post by  mpd61
Can someone tell me the formula to use to equate speed in MPH to how many feet it will take in stopping distance? Thanks in advance
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I found this online, I think it's right. I can't really remember from math or drivers ed class, but this seems to be right. The "20" is the "think time" in case you were wondering.

This is where I found it.

x*x / 20 + x = Overall stopping distance in feet


So say you're going...30..

30*30/20+30=75 ft.

Someone let me know if I am wrong.
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hey now....

it's not like i did it out on my own. I asked jeeves! JEEVES IS THE DORK NOT ME! :oops:
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