23. (II) At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long. It was a rainy day and the coefficient of friction was estimated to be 0.30. Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. (Why does the car's mass not matter?)
23. (II) At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long. It was a rainy day and the coefficient of friction was estimated to be 0.30. Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. (Why does the car's mass not matter?)
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Transcribed Image Text:23. (II) At an accident scene on a level road, investigators
measure a car's skid mark to be 78 m long. It was a rainy
day and the coefficient of friction was estimated to be 0.30.
Use these data to determine the speed of the car when the
driver slammed on (and locked) the brakes. (Why does the
car's mass not matter?)
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