A driver going at 68 mi/h on a flat road travels around a curve and sees a bus overturned across the road at a distance of 300 feet. a. If the driver decelerates at a rate of 9 ft/s, at what speed will the vehicle hit the bus? Plot the result for reaction times ranging from 1.00 to 4.00 seconds in increments of 0.5 seconds. (Hint: The resultant graph should have reaction time on the x-axis and speed on the y-axis) b.