1. This problem examines the motion of an automobile traveling on a crest vertical curve with the following profile: y=100+0.1x-0.0005x^2 where y and x represent the roadway elevation (in feet) and the horizontal distance (in feet). The automobile sets the brakes when x=0 while traveling 45 mph. the friction factor is .3 and air resistance is negligible. Find stopping distance ignoring the centrifugal acceleration. I am at a loss where to even begin.