Question

consider a train that can accelerate with an acceleration of 20 cm/s^2 and slow down with a deceleration of 100 cm/s^2. the train starts from rest at the first station, and stops at the second station, the two stations being 2km apart. for this to happen, find the minimum total elapsed time for the train to travel from the first to the second station.

Answer 1

Here's a fully worked example of this problem. Post back if you have questions:

http://www.bricksite.com/User_files/1a98de77fc07936a6a97dfe1ed419f94.pdf