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 Foo Off-Topic chit chat with no general subject.

 08-18-07, 11:03 AM #1 aikigreg Recumbent Ninja Thread Starter   Join Date: Jan 2005 Bikes: Posts: 2,135 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Bike math equation Ok, for some reason I can't seem to figure out how to find speed given time and known distance. Obviously if you maintain 20 miles an hour, then you cover 10 miles in a half hour. But what if you've done, say, 12.4 miles in 30.1 minutes? How do you find the speed?
 08-18-07, 11:08 AM #2 Tom Stormcrowe Out fishing with Annie on his lap, a cigar in one hand and a ginger ale in the other, watching the sunset.     Join Date: Mar 2006 Location: South Florida Bikes: Techna Wheelchair and a Sun EZ 3 Recumbent Trike Posts: 16,128 Mentioned: 1 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) 12.4/30.1*60=25.31561462 Mph __________________ . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche "We can judge the heart of a man by his treatment of animals." - Immanuel Kant
 08-18-07, 12:21 PM #3 skiahh Senior Member     Join Date: Aug 2003 Location: CO Springs, CO Bikes: 08 Stumpjumper FSR Expert, 02 Litespeed Tuscany, 04 Specialized S-Works Epic Posts: 1,035 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) rate * time = distance Therefore, rate = distance/time, as Tom calculated for you.
 08-18-07, 12:49 PM #4 Toastytofu Senior Member   Join Date: May 2007 Bikes: Posts: 175 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) 12.4*2? srsly mate....
 08-18-07, 03:21 PM #5 Ritehsedad Tail End Charlie     Join Date: Sep 2005 Location: Maine, The Way Life Should Be Bikes: Fuji Nevada MTB, Giant OCR1 Posts: 545 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Distance/time=speed Your units have to match, so if you use 30.1 minutes it has to be converted into hours (the way Tom did) by dividing by 60 - 30.1 minutes = .501667 hours. So much easier with a cyclometer installed... __________________ Why isn't 11 pronounced onety one?
08-18-07, 03:26 PM   #6
Mr. Gear Jammer
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Quote:
 Originally Posted by aikigreg Ok, for some reason I can't seem to figure out how to find speed given time and known distance. Obviously if you maintain 20 miles an hour, then you cover 10 miles in a half hour. But what if you've done, say, 12.4 miles in 30.1 minutes? How do you find the speed?
24.65 MPH, cant tell you how i came up with the answer becuase i figured it out in my head.

 08-18-07, 04:07 PM #7 georgiaboy Retro-nerd     Join Date: Mar 2005 Location: Morningside - Atlanta Bikes: 1991 Serotta Colorado II, 1986 Vitus 979, 1971 Juene Classic, 2008 Surly Crosscheck, 1949 Riva Sport Posts: 1,585 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 1 Post(s) Forget all the above answers. Just play dumb and input your numbers into Foo everyday. __________________ Would you like a dream with that?