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  3. 4 a railroad track and a road cross at right...

Question: 4 a railroad track and a road cross at right...

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4) A railroad track and a road cross at right angles. An observer stands on the road 70 meters south of the crossing and watches an eastbound train traveling at 60 m/sec. At how many m/sec is the train moving away from the observer 4 seconds after it passes through the intersection? a) 57. 60 b) 57.88 c) 59.20 d) 60.0 e) 67.4

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