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A boy takes his dog to a park. The dog runs away from the boy 20 m due west. It then changes the direction and runs 12 m at $30^o$ east of north. It then runs 30 m due south and stops.

What is the total displacement of the dog from the boy if the boy stays at rest?


24 m, 54° south of west


24 m, 54° north of east


62 m


26 m, 68° south of east


26 m, 45° north of west

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