We have to calculate the average speed of a runner in mi/h units.
Speed is defined as distance covered per unit time.
We will solve this problem through these steps:
Step 1: Convert distance form meter units to miles units.
Step 2: Convert time to hours.
Step 3: Calculate speed of the runner.
The world record for the womens outdoor 20,000 meter run, set in 2000 by Tegla Loroupe, is 1:05:26.6 (seconds are given to the nearest tenth).
What was her average speed, expressed in miles per hour with the correct number of significant figures? (Assume that the race distance is accurate to 5 significant figures.)
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Dimensional Analysis concept. You can view video lessons to learn Dimensional Analysis. Or if you need more Dimensional Analysis practice, you can also practice Dimensional Analysis practice problems.
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