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Drunk driver reaction time increased stopping distance

by physicsgurl12
Tags: distance, driver, drunk, increased, reaction, stopping, time
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physicsgurl12
#1
Sep25-11, 12:49 PM
P: 184
1. The problem statement, all variables and given/known data

Human reaction times is sometimes worsened by alcohol. How much farther would a drunk driver's car travel before he hits the breaks than a sober drivers car? assume both cars are initially traveling 49 mi/h the sober driver takes .33s to hit the brakes and the drunk driver takes 1s.
a, 53ft
b, 48ft
c, 34ft-this is wrong
d,58 ft

2. Relevant equations

3. The attempt at a solution
i just tried it again on paper and i think i found .0091194444miles is the difference. so that would be like 14 meters which is 48 feet. is this what you got. i did 49mi/hr/60/60=.0136mi/s*.33= .0044916667 and subtracted that from .0136 which got me .00911 and then just converted.
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Ignea_unda
#2
Sep25-11, 12:55 PM
P: 133
Looks right to me.


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