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Trigonometry
Question

Assume that the brakes of an automobile produce a...

Assume that the brakes of an automobile produce a constant de- celeration of \(k ft / sec ^ { 2 }\) . (a) Determine what \(k\) must be to bring an automobile traveling \(60 mi / hr ( 88 ft / sec )\) to rest in a distance of \(100 ft\) from the point where the brakes are applied. (b) With the same \(k\) , how far would a car traveling \(30 mi / hr\) go before being brought to a stop?

Answer

\(\left. \begin{array} { l l } { \text { (a) } k = - 38.72 } & { \text { (b) } 25 ft } \end{array} \right.\)

Solution
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