At an accident scene on a level road, investigators measure a car's skid mark to be 84 m long. It was a rainy day and th

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At an accident scene on a level road, investigators measure a car's skid mark to be 84 m long. It was a rainy day and the coefficient of friction was estimated to be 0.36.
Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. Express your answer to two significant figures and include the appropriate units. V= Templates Value m/s pou ref ?
Why does the car's mass not matter? O Since the change in kinetic energy and the work done by friction do not depend on mass. O Since the work done by friction does not depend on mass. Since both the change in kinetic energy and the work done by friction are proportional to the mass. The mass cancels out of the equation.