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Sport Central Online » Sports » Track and Field » Chemistry: A sprinter set a high school record in track and field, running 200.0 m in 21.1 s.?
What is the average speed of the sprinter in kilometers per hour?
chem hw – how to convert between different units of measurements, etc
It’s one big dimensional analysis problem. Just keep track of units and make sure they cancel out to give you the correct units for the answer.
"The Old Professor" had the correct formula. Avg speed = dist/ time
(200 m / 21.1 s) * (1 km / 1000 m) * ( 3600 s / 1 hr) = 34.12 km/hr
Old Prof: Surprisingly, unit conversions are part of the introductory curriculum.
this is not a chemistry question
average speed = total distance/total time
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