For some it is, but if you are determined then it is just another thing you have to throw full effort at. There are a zillion sites that will help with understanding Physics and once the penny drops, it will all become much clearer. Try getting a tutor for a few weeks just to get you past that first hump.
Failing that, take an instance that is problematic to you, post it here with how you think you should go about resolving it. The TOS does not allow helping with homework, but I am sure there will be no shortage of people to guide you if they see you making an effort to grasp the principles.
Just posting the problem with no effort shown by you will elicit a stoney silence from all of the regulars here.