Speed is the rate of distance over time.
It will take 6.67 minutes to get to school
The given parameters are:
[tex]s = 20ms^{-1}[/tex] ---the speed limit
[tex]d = 8000m[/tex] -- the distance from school
The relationship between speed, distance and time (t) is:
[tex]s = \frac dt[/tex]
Make t the subject
[tex]t = \frac ds[/tex]
Substitute values for d and s
[tex]t = \frac {8000}{20}[/tex]
[tex]t = 400s[/tex]
Convert to minutes
[tex]t = \frac{400}{60}min[/tex]
[tex]t = 6.67\ min[/tex]
Hence, it will take 6.67 minutes to get to school
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