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An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks was 84 feet. What was the speed of the vehicle before the brakes were applied?

Answer :

The brakes applied to depend on the road surface. Every surface has a coefficient of friction how much drag is between the surface and the tire.

Asphalt is slicker than concrete wet is slicker than dry, etc and that determines how far a car will skid before stopping. In accident reconstruction, test skids are done to determine that number. Then the damage to the vehicles is assessed, both contact and induced damage, then the math will give you an approximate but pretty accurate speed before braking.

The formula to calculate the coefficient of friction is To work in the speed it goes like this d friction force, always acts in the opposite direction of the intended or actual motion, but only parallel to the surface.

Learn more about road surface here:-https://brainly.com/question/1213174

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