Question

An accident investigator measured the skid marks of one of the vehicles involved in an accident. Thelength of the skid marks was 250 feet. Use the formula s=square root of (24d) (?"s equals square root of 24*d") tofind the speed of the vehicle before the brakes were applied. Round your answer to the nearesttenth. The units are mi/hr

Answer 1

`\begin{gathered} \text{Given} \\ d=250\text{ ft} \\ s=\sqrt[]{24d} \end{gathered}`
`\begin{gathered} \text{Substitute the given distance, to the given formula} \\ \\ s=\sqrt[]{24d},\text{ IF }d=250,\text{ THEN} \\ \\ s=\sqrt[]{24\cdot(250)} \\ s=\sqrt[]{6000} \\ s=77.4596669 \end{gathered}`

Rounding the answer to the nearest tenth, the speed of the vehicle before the brakes were applied is 77.5 mi/hr.