Khan/khan-exercises — Issue #13672: Rate problems 1 - TIL I travelled zero meters at the speed of light all my life
Author: KhanBugz
Created: 2012-02-12 13:14:48+00:00
State: open
Labels: chrome, other

Reporter: alkalait@gmail.com

The problem states that Omar traveled at 9 m/h by bike for some unknown distance. Eventually, it turns out that he traveled 0 miles by bike. The problem with this particular instantiation of the exercise is that Omar is said to a have a well-defined speed for a zero-distance that he travelled in zero time (he spent zero time riding that bike).

I'm afraid this might transfer a wrong message to students about speed, and rates in general.

[rate_problems_1.html?seed=52&problem=original](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=52&problem=original&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=52&problem=original&debug&activity=%5B%5D)

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Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7

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