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mathslover (mathslover):
In the 2008 Olympics, Jamaican sprinter Usain Bolt shocked the world as he ran the 100-meter dash in 9.69 seconds. Determine Usain's average speed for the race.
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OpenStudy (anonymous):
I think that this problem is very simple. You just have to know the equation of average speed. \[V=100m \div 9.69s \approx10,31m/s\]
mathslover (mathslover):
oh sorry u r right .. i was applying (v-u)/t sorry ..
mathslover (mathslover):
and thanks a lot
OpenStudy (anonymous):
Excuse my English, I'm Brazilian and not speak English very well.
mathslover (mathslover):
no problem @PedroBarbosa
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