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Please help! An athlete runs at 6 m/s north for a distance of 12 000 m, then turns around and walks at 2 m/s south back to her original position. How long does it take her to wa…
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Please help! An athlete runs at 6 m/s north for a distance of 12 000 m, then turns around and walks at 2 m/s south back to her original position. How long does it take her to wa…
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Dec 14, 2019
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Please help!
An athlete runs at 6 m/s north for a distance of 12 000 m, then turns around and walks at 2 m/s south back to her original position.
How long does it take her to walk back to her original location?
a) 4 000 s
b) 24 000 s
c) 2 000 s
d) 6 000 s
Physics
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The distance she has to run back to her original position is 12,000 m.
Her speed on the way back is 2 m/s .
Time = (distance) / (speed) = (12,000 m) / (2 m/s) =
6,000 seconds.
That's 100 minutes, or 1 hour 40 minutes.
Richard Todd
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Dec 18, 2019
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Richard Todd
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