m 2. Dawn starts riding down an escalator at the same time Ursula starts riding up a parallel escalator. The escalators

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m 2. Dawn starts riding down an escalator at the same time Ursula starts riding up a parallel escalator. The escalators

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M 2 Dawn Starts Riding Down An Escalator At The Same Time Ursula Starts Riding Up A Parallel Escalator The Escalators 1
M 2 Dawn Starts Riding Down An Escalator At The Same Time Ursula Starts Riding Up A Parallel Escalator The Escalators 1 (71.24 KiB) Viewed 45 times
m 2. Dawn starts riding down an escalator at the same time Ursula starts riding up a parallel escalator. The escalators are 3 meter apart, 30 meters long, and they both move at the rate of 1 m/sec. Question: How quickly is the distance between them changing 10 seconds later? (a) Without doing any computations, do you expect your answer to be positive or negative? Why? (b) Using complete sentences, describe your plan for answering this question. (c) Answer the question. Explain why the result is reasonable.
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