1. The problem statement, all variables and given/known data A building is 320 meters tall. An elevator accelerates uniformly for 30 meters, travels at a constant rate for 260 meters, then decelerates uniformly for the last 30 meters. The total time is 90 seconds. What is the velocity for the middle 260 meters? 2. Relevant equations s=.5at^2, v=at, s=vt 3. The attempt at a solution I tried 320m:290m=v(final)sec:3.5556 sec. This yields a ball park answer but I don't think it's right. I'd be very grateful for any help.