62m of skid marks and coefficient of .75, how fast was the car going?
To determine the speed of the car, you can use the formula for calculating skid distance, which is given by:
Skid Distance = (Speed^2) / (2 * Deceleration)
Here, the skid distance is given as 62 meters, and the coefficient of friction (deceleration) is given as 0.75. We need to solve for the speed of the car.
Rearrange the formula to solve for speed:
Speed = sqrt(2 * Deceleration * Skid Distance)
Let's substitute the given values into the formula:
Speed = sqrt(2 * 0.75 * 62)
Now, let's calculate the speed:
Speed ≈ sqrt(93)
Speed ≈ 9.64 m/s (rounded to two decimal places)
Therefore, the car was going approximately 9.64 meters per second.