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
a through a congested part of town at 6.0 m/s. Once free of
this area, it speeds up to 14 m/s in 8.0 s. At the town, the driver again accelerates, edge of with the same acceleration, for another 16 s to reach a higher cruising speed