(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Train is traveling between two stations 1000 m apart. Train never reaches cruising speed, instead engineer first accelerates at 0.1 m/s^2 and then immediately brakes at -.5 m/s^2.

How much time is needed to get from one station to the other?

How much of this time is spent accelerating?

2. Relevant equations

Not really sure. I'm assuming that x=x0 + v0t + 1/2at^2 is used, but I'm not sure how to deal with the two different accelerations and the ratio between the time spent accelerating and braking.

3. The attempt at a solution

The real problem is I'm not really sure where to start. I've had several attempts but can't find a way to relate T1 to T2.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Should be simple acceleration problem

**Physics Forums | Science Articles, Homework Help, Discussion**