Tests reveal that a normal driver takes about 0.75s before he or she can react to a situation to avoid a collision. it takes about 3s for a driver having 0.1% alcohol in his system to do the same.

if such drivers are traveling on a straight road at 30mph (44 )ft/s and their cars can decelerate at 24ft/s^2 , determine the shortest stopping distance d for normal driver from the moment he or she see the pedestrians.

also, determine the shortest stopping distance for drunk driver from the moment he or she see the pedestrians.