Asked by zac
An 18-year-old runner can complete a 10.0 km course with an average speed of 4.51 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.31 m/s. How much later (in seconds) should the younger runner start in order to finish the course at the same time as the older runner?
Answers
Answered by
drwls
The older runner requires 10,000/4.31 = 2320.2 s and the younger one requires
10,000/4.51 = 2217.3 s
The difference is 102.9 s. That is the head start required for them to finish at the same time.
10,000/4.51 = 2217.3 s
The difference is 102.9 s. That is the head start required for them to finish at the same time.
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