A runner ran the marathon (approximately 42.0 km) in 2 hours and 57 min. What was the average speed of the runner in m/s?
A) 14,200 m/s
B) 124 m/s
C) 14.2 m/s
D) 3.95 m/s

Question

Quizplus · Accepted Answer

The total time in seconds is 2 hours * 3600 seconds/hour + 57 minutes * 60 seconds/minute = 7200 seconds + 3420 seconds = 10620 seconds. The average speed in m/s is total distance / total time = 42,000 meters / 10620 seconds = 3.95 m/s.

A Runner Ran the Marathon (Approximately 42