A jogger runs along a straight and level road for a distance of 8.0 km and then runs back to her starting point. The time for this roundtrip is 2.0 h. Which one of the following is true?
1
Expert's answer
2013-10-15T09:58:22-0400
Unfortunately, the statement of your question is a bit confusing. What do you need to be done? Please provide the details so we could help you.
As we know, average velocity=displacement\total time. The jogger
returned to the starting point so the displacement is 0. Therefore
average velocity=0\2=0 Total average speed = Total distance/Total
time=(8+8)/2=8 km/h
eman
14.10.13, 18:53
Her average speed is 8.0 km/h, and her average velocity is 0 km/h.
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As we know, average velocity=displacement\total time. The jogger returned to the starting point so the displacement is 0. Therefore average velocity=0\2=0 Total average speed = Total distance/Total time=(8+8)/2=8 km/h
Her average speed is 8.0 km/h, and her average velocity is 0 km/h.
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