Asked by Anonymousjm

Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 6 meters per second. If the slower runner has a 70-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?
Answered by Steve
the speed difference is 4m/s
The distance difference is 70m.

so, the faster runner will take 70/4=17.5s to catch up
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