Why is high school physics hard?Many students think that high school physics is not easy to learn, and it is painful to learn Xi and tangled in choice.
Today I'm going to explain to you what's going on in high school physics, the old saying is called knowing oneself and knowing one's opponent, and being invincible in a hundred battles, remember that three numbers are called 123, I'll explain these three numbers to you, and you can figure out these three numbers, and you will know what's going on in high school physics.
First of all, the number 3, high school physics Xi content is a lot, each module, the main module is called mechanics, electricity and magnetism, which is called the meaning of three three.
In addition to this, there are mechanical waves, mechanical vibrations, atomic physics, optics, thermal, gases, and so on, all of which are small modules. The main ones are force, electricity, and magnetism, and if you learn force, electricity, and magnetism well, you will be equivalent to winning high school physics.
The second number is called 1, what is 1?Call a center. Whether it's mechanics, electricity, or magnetism, they all revolve around a center, and what center?It is called motion mechanics, which is the study of the relationship between force and motion.
When you were in high school and freshman mechanics, you studied macroscopic objects, such as large balls, cars, the sun, the earth, and the moon, and the relationship between their forces and motion.
When you study electromagnetism in your sophomore year of high school, or when you study electromagnetism in your second year of high school, you will study microscopic charged particles, the relationship between the force and motion of a small object.
The third number is 2, which represents two solutions. Whether you're solving the problem of force or solving the problem of electromagnetism, both ways.
The first way is the dynamics view of our senior year, which is centered on Newton's laws, from the first, second, and third laws plus the law of gravitation, and they are the center.
The second means is the functional relationship, which has the kinetic energy theorem, the law of conservation of mechanical energy, and the kinetic energy theorem, and the two means with this functional relationship as the core. That is to say, the mechanics of motion, whether it is macroscopic mechanics or microscopic electromagnetism, can be solved by two means.
I believe that if you remember the knowledge points corresponding to the above three numbers, you can do high school physics well. Pay attention to Mr. Guo and give you more protection for your further education planning.