Recently I have been having issues knowing when to use the work energy principal vs. impulse momentum or using F=ma and integration. I seem to default with all problems to integrating work done over a path but then messing it up or that not being the proper approach. The issue seems to be that in my head they are all inter-related via integration or differentiation but I always seem to be picking the wrong one. Is there a general approach or key words of things to look for when starting off a problem? Or perhaps what would be the most general approach that will always yield a correct result. Has anyone else had these issues of confusion?