Posted by **MeganErin** on Sunday, September 12, 2010 at 2:47pm.

A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point.

(a) What is the runner's average velocity for the first 9 min?

_______ km/h

(b) What is the average velocity for the time spent walking?

_______ km/h

(c) What is the average velocity for the whole trip?

_______ km/h

(d) What is the average speed for the whole trip?

_______ km/h

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