Average Speed vs. Average Velocity_3

Описание к видео Average Speed vs. Average Velocity_3

An athlete completes four (4) laps of a circular track of diameter 200 m in 7 minutes and 30 s. Assume the athlete runs at a constant rate.
What is the total distance dtotal covered during the given time?
What is the runner’s average speed savg (in m/s) during this time?
What is the average velocity vavg (in m/s) at the end of 7 minutes 30 s?
What is the magnitude of the average velocity vavg (in m/s) after 2.5 laps?

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