At an accident scene on a level road, investigators measure a car's skid mark to be 109 m long. It was a rainy day and the

Question

At an accident scene on a level road, investigators measure a car's skid mark to be 109 m long. It was a rainy day and the coefficient of friction was estimated to be 0.49. Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes.

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