Six-car RGR trains running between two stations with a distance of 2000m accelerate to

Vmax = 100km/h on a distance . From the moment Vmax is reached, two alternative regimes are

possible:

a) Maintain Vmax until braking must be applied

b) Coasting is immediately used (.1m/s2) and maintained until braking must be applied.

Assuming that in both cases braking rate is .0m/s2, compute the trade-off between the two regimes: the

additional travel time t(s), which case b) involves in comparison with case a).