A whale swims due east for a distance of 6.9 km, turns around and goes due west for 1.8 km, and finally turns around again and heads 3.7 km due east. (a) What is the total distance traveled by the whale? (b) What are the magnitude and direction (east or west) of the displacement of the whale? If it takes 30.0 min for the whole trip, (c) What is the average speed in km/h for the whole trip? (d) What is the average velocity (magnitude and direction) in km/h for the whole trip?
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