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11. (8) A train is traveling at : km/min along a straight track, moving in the direction shown in the figure below. A movie camera

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11. (8) A train is traveling at : km/min along a straight track, moving in the direction shown in the figure below. A movie camera positioned 1km from the track is focused on the train. How fast the camera is rotating (in radian/min] at the moment when the train is 2km from the camera? 1

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