A car with manual transmission was driven on a long straight horizontal road at 55 mph. The car was taken out of gear and let roll to a stop. The time in seconds at which the car was travelling at 55, 50, ... , 10, 5, and 0 mph was recorded in the first column. Data from "Determining the air drag on a car" by J.E. Farr, The Physics Teacher, May 1983, 320-321.