You will pardon me for having assumed that you were in college.
Physics can be a daunting subject, especially without the proper mathematics background. If you are in 9th grade and are already learning physics, you must have gone ahead and done something right, to be learning so far ahead.
It’s hard to put pieces together and to make something really meaningful out of it, to turn words into equations or mathematical phrases that give you the thoughts of “why does it matter?”
But at the end of the day, it might still not make much sense, no matter how much time or effort you put into it. It’s supposed to make sense, because macrophysics (Newtonian physics) is supposed to be more common sense.
Try getting some help from the teacher maybe after school or if you have self-study periods in school. I don’t know how things are arranged for you. And maybe you play some sports that prevent you from actually sticking around with a teacher after school.
When it was high school, everything was directed learning and being in New York State, we have our standardized tests at the end of the year for all of these subjects, including physics. That’s why our instructions were very much in line with what the tests wanted us to learn.
When you are in college, you will be expected to learn a lot more by yourself, doing a lot of reading and learning through trial and error in your own time aside from the formal lectures. That’s when I remember missing some of the regimented and structured learning of high school. But ultimately you end up learning whatever you can stuff into your brain. Some of it will stick longer than others.
Back to the idea of whether something matters, one approach I currently take is that there’s really not much out there not worth learning about. It’s just a matter of perhaps some things not fitting our personalities or the ways that we think that make the topic less interesting than others. For sure, we all gravitate toward some things and shun others. But there is worth in all pieces of knowledge out there, and while you are in school and hopefully not having to worry about food/job/finances/etc, you can soak up information a bit more freely.
Despite what I saw, I have tons of information that is thrown in my direction every day and I cannot absorb it all. I have hardly any time to absorb most of it. But fortunately most jobs that are out there for people have specific tasks that you learn and get used to and things become easier.
Similarly, just because we learn on the job and things get easier, doesn’t mean that we have to learn something perhaps really complex just to get into it. So take whatever opportunities that you have given to you and try to learn to the best of your ability the things that are out there. So what if you end up with one bad grade in a class that you don’t care too much about?
My parents would have freaked out too if I had been close to failing anything in high school. But that’s what parents are supposed to do, because they want to see you do well in school so that you can excel in whatever field that you choose for yourself in the future and get ahead of the curve and have a life where perhaps you can have some luxuries and not live paycheck to paycheck, which a lot of people struggle with. But parents can seem overbearing when they want to start bossing you around, and I don’t know your family dynamics, but if you tell them that you can handle it on your own and you show them progress by proving to them that you can handle things, and act maturely, then they are more apt to allow you to handle difficult situations.
Failures never look great, but they don’t determine the rest of your life. If you learn from it and improve, then that would have been a good lesson.
Sorry, I digressed a lot…
Physics is useful, to a lot of people, but it may not apply at all ultimately in your future. Nevertheless, try to learn whatever you can and make it meaningful for you to learn the material, not necessarily on someone else’s agenda. If one method that your teacher is explaining something doesn’t make sense, look to someone who understands what is going on and try to have them help you out. Or ask the teacher to explain it in a different way.
A lot of times it could be the matter in which the sentences are phrased in the explanations that are causing you to be confused.
Physics is also hard, Do your best. And good luck.