1. The problem statement, all variables and given/known data "A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s." 2. Relevant equations "What is the jet's acceleration, assuming it to be a constant acceleration?" 3. The attempt at a solution The way I see it, the only info we have is v-initial = 300 m/s , v-final = 400 m/s , and delta-x = 4000 m. To find acceleration I would need delta-t. All the equations that I'm cognizant of seem to include both acceleration and delta-t, both variables that are not given. It seems like I would need the acceleration to find delta-t. I also seems I would need delta-t to find acceleration. This seems like a simple problem, but I don't even know how to approach it. So far this semester I've been teaching myself, because our homework and quizzes are at least 1 chapter ahead of our lectures, which means our prof. isn't teaching us jack sh!t, just (inadequately) reviewing material that we've already taught ourselves to do the homework and quizzes. This class is really making me hate physics, which I formerly loved and wanted to major in. :( What should my methodology be from the get-go?