The speed of the car with skid marks of 80 feet long on dry concrete is 51 mph
Speed
Skid marks
A skid mark made by a car is the mark a tire makes when a vehicle wheel stops rolling and slides or spins on the surface of the road. This is simply the marks made by a car tire when the brake is held.
where
f = coefficient of friction determined by when the car was skidding.
d = skid mark length
v = speed
Therefore,
v = √ 32 × 1.02 × 80
v = √ 2611.2
v = 51.0999021525
v = 51 mph
learn more on skid marks here: https://brainly.com/question/21734785
