This is an example physics problem using a problem solving protocol to help you develop problem solving skills. Pay as much or more attention to _how to analyze the problem_ as to the problem itself.
The problem statement is as follows:
You are standing on level ground as an airplane cruises 10,000 m overhead at 250 m/s, moving from directly behind you to directly ahead of you and leaving contrails you can follow with your eyes. What is its angle from the horizontal thirty seconds after it passes over your head?
