AP Physics C Mechanics Quiz
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A person stands on a moving walkway that travels at 1.5 m/s1.5 \text{ m/s}. The person walks forward on the walkway at 2.0 m/s2.0 \text{ m/s} relative to the walkway for 10 s10 \text{ s}, then turns around and walks backward at the same speed relative to the walkway for another 10 s10 \text{ s}. What is the person's displacement relative to the ground after the entire 20 s20 \text{ s} journey?
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