1. The problem statement, all variables and given/known data. A model steam train engine has a mass of 2.3 kg is powered by a sterno and white gas mixture that heats a small boiler. Once sufficient steam pressure is produced, the train is released from rest. The train travels along a straight and level track. At any time after release and before it comes to rest, the train’s speed can be expressed by v = 5t + 2t 2 − t 3 . a) How far does the train travel before the engine is producing maximum force? 2. Relevant equations 3. The attempt at a solution I've only been thinking on how i can approach this problem and I haven't had any luck. I've tried drawing Free body Diagrams and drawing forces but it's not helping and its because i dont really understand what they are asking for. Am I looking for a displacement? Now i know the initial position is 0 since it was released from rest. Now I am guessing max force is the force needed to get the train moving? Please help.