In an 8.00 km race, one runner runs at a steady 11.1 km/h and another runs at 14.0 km/h. How far from the finish line is the slower runner when the faster runner finishes the race?

Question

Kathy Jacobs

Physics

23 November, 05:14

In an 8.00 km race, one runner runs at a steady 11.1 km/h and another runs at 14.0 km/h. How far from the finish line is the slower runner when the faster runner finishes the race?

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Answers (1)

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Holmes · Answer 1

Time taken by the faster runner to get to the finishing line = distance/speed = 8/14 = 0.5714 = 34 minutes

Distance covered by the slower runner for 34 minutes = speed x time = 11.1 x 0.5714 = 6.34

Distance of the slower runner from the finish line when the faster runner finishes the race = 8.00 - 6.34 = 1.66 km