SOLUTION: how long would it take to slow down from 80 miles an hour in a quarter mile. what is the rate of slow down per foot

Question 888975: how long would it take to slow down from 80 miles an hour in a quarter mile.
what is the rate of slow down per foot
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
how long would it take to slow down from 80 miles an hour in a quarter mile.
Assuming uniform acceleration:
s = at^2/2
v = at
s = vt/2
t = 2s/v = 2*(1/4)/80 = 1/160 hour = 22.5 seconds
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what is the rate of slow down per foot
1/4 mile = 1320 feet
80 mi/hr = 80*22/15 ft/sec = 352/3 ft/sec
Not sure what you mean by "slow down per foot"
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