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10 November, 07:06

A person walks 5.0kilometers north, then 5.0 kilometers east. His displacement is closest to? A. 10 kilometers northwest B. 7.1 kilometers northwest C. 10 kilometers northeast D. 7.1 kilometers northeast

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  1. 10 November, 08:01
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    Use vector analysis and calculate resultant vector using Pythagoras theorem:

    5^2 + 5^2 = 50

    Square root of 50 = approx 7.1 km NE

    Therefore the answer is D
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