Tests reveal that a normal driver takes about $0\mathrm{.}75$ s before he or she

can react to a situation to avoid a collision. It takes about $3$ s for a

driver having $0\mathrm{.}1\%$ alcohol in his system to do the same.$($Figure $1)$

Part A

If such drivers are traveling on a straight road at $30mph(44f\frac{t}{s})$ and their cars can decelerate at $24f\frac{t}{s^2},$ determine the shortest stopping distance $d$ for normal

driver from the moment he or she see the pedestrians.

Express your answer with the appropriate units.

$d=$

Part B

Determine the shortest stopping distance $d$ for drunk driver from the moment he or she see the pedestrians. Moral: If you must drink, please don't drive!

Express your answer with the appropriate units.

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$d=$