Answer :

8 minutes has 8*60 or 480 seconds. If we divide 3000 meters by 480 seconds, we get an average speed of 6.25 m/s.

Answer is D.

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The Average Speed of the runner is 6.25 meters per second. (Answer: D)

The Average Speed of the runner ([tex]\vec v[/tex]), in meters per second, is the Travelled Distance ([tex]s[/tex]), in meters, divided by Time ([tex]t[/tex]), in seconds. We substitute all variables and calculate the result. Please notice that a minute equals 60 seconds.

If we know that [tex]s = 3000\,m[/tex] and [tex]t = 480\,s[/tex], then the average speed of the runner is:

[tex]\bar v = \frac{x}{t}[/tex] (1)

[tex]\bar v = \frac{3000\,m}{480\,s}[/tex]

[tex]\bar v = 6.25\,\frac{m}{s}[/tex]

The Average Speed of the runner is 6.25 meters per second. (Answer: D)

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