Light-rail passenger trains that provide transportation within and between cities speed up and slow down with a nearly constant (and quite modest) acceleration. A train travels through a congested part of town at 6.0 m/s m / s . Once free of this area, it speeds up to 14 m/s m / s in 8.0 s s . At the edge of town, the driver again accelerates, with the same acceleration, for another 16 s s to reach a higher cruising speed. What is the final speed? Express your answer to two significant figures and include the appropriate units.