A police officer is driving due north at a constant speed
Chapter 3, Problem 3.94(choose chapter or problem)
A police officer is driving due north at a constant speed of 29 m/s relative to the ground when she notices a truck on an eastwest highway ahead of her, driving west at high speed. She finds that the trucks speed relative to her car is 48 m/s (about 110 mph). (a) Sketch the vector triangle that shows how the trucks velocity relative to the ground is related to the police cars velocity relative to the ground and to the trucks velocity relative to the police car. The sketch need not be to scale, but the velocity vectors should be oriented correctly and bear the appropriate labels. (b) What is the trucks speed, relative to the ground?
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