An automobile traveling along a straight road increases its speed from 67 ft/s to 85 ft/s in 180 ft. If the acceleration is constant, how much

time elapses while the auto moves the 180 ft? Answer in units of s. Can you tell me the steps in doing this?

1 answer

vf^2=vi^2 + 2 a d
solve for a
then
d=vi*t+1/2 a t^2 solve for time with d=180ft