According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Assume constant acceleration in each part of the motion, but not necessarily the same acceleration when slowing down as when speeding up.
Part A Find the acceleration of this car when it is speeding up. in ft/s^2
Part B Find the acceleration of this car when it is braking. in ft/s^2