train moving at a constant speed of 51.0 km/h moves east for 31.0 min, then in a direction 54.0 east of due north for 12.0 min, and then west for…

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train moving at a constant speed of 51.0 km/h moves east for 31.0 min, then in a direction 54.0° east of due north for 12.0 min, and then west for 53.0 min. What is the average velocity of the train during this run?

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