the braking distance D in feet required to stop a car traveling x miles per hour on dry , level pavement can be approximated by
D=1/9x^2
1 answer:
<span>We can find as follows
x D=x^2/9
speed braking distance
mph in feet
20 44.44
60 400.00
b) x^2/9=16
x^2=144
x=12 mph</span>
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