car leaves a 20 ft. skid mark how fast was the car traviling

How fast was a car traveling that left a skid mark that was 100 feet long?

To determine the speed of a car based on its skid mark, you need additional information. Specifically, you would need to know the coefficient of friction between the car's tires and the surface on which it was traveling. Without this information, it is not possible to calculate the car's speed accurately.

However, if you have access to additional data, especially the time it took for the car to create the skid mark, you can use physics equations to calculate an estimate of the car's initial speed before skidding.

The formula to calculate speed is:

Speed (v) = Distance (d) / Time (t)

If you have the time it took for the car to form the skid mark, you can plug in the given distance of 20 ft for skid mark and the time to calculate the speed. However, keep in mind that this will only give you an estimate and may not be entirely accurate due to various factors such as tire conditions, road surface conditions, and braking techniques.

If you are investigating a real-life scenario or accident, it would be best to consult professionals, such as accident reconstruction experts or law enforcement, who have the necessary expertise and tools to accurately determine the speed of a vehicle involved in an incident.