The approximate speed of a vehicle that left a skid mark measuring 140 feet is 56.35 miles per hour.
Let, s is the speed in miles per hour,
And d is the length of the vehicle’s skid marks.
The brakes are applied using the formula
\(0.75d = \frac{s^{2}}{30.25}\)
We have to find,
The approximate speed of a vehicle that left a skid mark measuring 140 feet.
According to the question,
\(0.75d = \frac{s^{2}}{30.25}\)
= 0.75d = \(\frac{s^{2}}{30.25}\) ,
So, for d = 140ft
= 0.75 x 140 = \(\frac{s^{2}}{30.25}\)
= 0.75 x 140 x 30.25) = \(s^{2}\),
s = \(\sqrt{(0.75).(140).(25)}\) = 56.35 miles per hour
Hence, The approximate speed of a vehicle that left a skid mark measuring 140 feet is 56.35 miles per hour .
For more information about Velocity click the link given below.
https://brainly.com/question/17127206
