2011 Headway calculation

[Peter]

For point 5, when you have considered the acceleration, why have you calculated the time taken for the train to accelerate over the distance O + L? How do you know what speed the train is doing at this point? You need to work out how long it will take the train to accelerate back to line speed. (Hint, given that the acceleration rate is the same as the deceleration rate, the time for both will be the same, and the distance travelled). I think this is the thing you are asking in point 3.

Peter