Calculate the braking distance for 36 miles per hour and 72 miles per hour. How do your answers compare?


vf^2 = vi^2 - 2ad

vfinal = 0

0= vi^2 - 2ad

d = vi^2 /2a

assuming constant

distance 36mph =
d1 = 36^2 /2a

d 72mph =
d2 = 72^2 /2a

ratio of distances

d1/d2 = 36^2 /2a / 72^2 /2a

d1/d2 = 36^2 / 72^2
= 1/4

braking distance 36 mph 1/4 braking distance of 72mph

calculate braking distance 36 miles per
hour , 72 miles per hour. how answers
compare?


Science & Mathematics Geography Next



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