Highway patrol A highway patrol plane flies 3 mi above a

Chapter 3, Problem 42E

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Problem 42E

Highway patrol A highway patrol plane flies 3 mi above a level, straight road at a steady 120 mi/h. The pilot sees an oncoming car and with radar determines that at the instant the line-of-sight distance from plane to car is 5 mi, the line-of-sight distance is decreasing at the rate of 160 mi/h. Find the car’s speed along the highway.

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