Imfailinschool Imfailinschool

17-12-2020
Mathematics

contestada

convert 15 km per hour to meters per second

25m per second
9m per second
54 m per second
4.2m per second

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ara0420 ara0420

17-12-2020

1km = 1000m
1hr = 3600sec

Do proportions:
1km / 1000m = 15km / x
15000m = x

1hr = 3600sec

15000/3600 = 4.2m per second
Choice 4

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