A bird watcher meanders through the woods walking 178 km, Ask an Expert

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A bird watcher meanders through the woods, walking 1.78 km due east, 1.03 km due south, and 2.19 km in a direction 49.5 ° north of west. The time required for this trip is 1.087 h. Determine the magnitudes of the bird watcher's

(a) displacement and

(b) average velocity.

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