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Unformatted text preview: On its way down? 3. At noon ship A is 100 km west of ship B. Ship A is sailing east at 20 kilometers per hour and ship B is sailing directly north at 10 kilometers per hour. How fast is the distance between the ships changing at 4 pm? Write your answer in a sentence. (hint: think about whether your rates are positive or negative for this problem!!!)...
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 Spring '08
 Williamson
 Calculus, Derivative, Mathematical analysis, Kilometre, dy dt

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