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neyssa83
12.09.2019 •
Mathematics
Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 4 meters per second. if the slower runner has a 75-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?
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Ответ:
12.5 seconds
Step-by-step explanation:
Speed of the first person = 10 meter per second
Speed of the second person = 4 meter per second
Relative velocity of faster person = 10 - 4 = 6 meter per second
since distance between both the person is = 75 meter.
Therefore, time to cover this distance by faster person =![\frac{Distance}{Speed}](/tpl/images/0228/6730/33dd9.png)
= 12.5 seconds.
Faster runner catches the slower runner after 12.5 seconds.
Ответ:
its easy
Step-by-step explanation:
becayse