Physics is hard for me, annoying, what should I do?

Before doing a question every time, take a good look at the relevant example questions, understand them thoroughly, and find out the ideas for solving the problems. When you do the problem independently, follow the steps of the example problem solving, develop the habit of solving the problem systematically, and don't solve the problem with a hammer in the east and a stick in the west.

Make sure to get the problem in the future, and immediately have a rough way to solve the problem.

You should develop the habit of solving problems independently, even with the help of other students, you must do it again independently.

Don't engage in sea tactics.

Learn physics to see more, ask more, do more hands-on, physics is a very experimental discipline, you not only have to watch the teacher do a variety of demonstration experiments, but also do a lot of experiments by yourself, some experiments can be done at home because of the ugliness, it is recommended that you find some popular science physics books to look at first, improve your understanding of physics, interest, do not rigidly memorize definitions, memorize formulas, set of formulas to solve problems.

First of all, try to discover the fun of physics, like me, I hated physics, I want to see the circuit diagram or something, I think of the circuit diagram as a maze or something like a game, imagine yourself as an electron, to the fork in the road to separate, and then to a fork in the road and merge, so that when you think about it, the topic of the circuit is very interesting! I don't want to sleep anymore in physics class.

It is recommended that the landlord can sign up for a tutoring class, and the new tutoring is good.

Xinshang education is very comprehensive, very new, very unique, the teacher's teaching is serious, come here, the grades improve quickly, there are learning methods, so that you are closer to success.

I would like to introduce you to the learning method of Li Xiaopeng, the top student in the college entrance examination, and don't take a try.

Systematic learning approach.

First, the fundamental law of learning - clear thinking.

1. Simple learning - focusing on the learning of knowledge points - understanding, memorization, and practice;

2. Systematic learning - induction and summary - skeleton, sorting and enrichment;

Complete learning is a combination of 1 and 2.

2. How to use the fundamental laws to learn:

1. Problems: many knowledge points and a wide range of knowledge;

2. Problem solving process: the process of establishing the connection between various knowledge points;

3. Unable to solve the problem: breakpoint;

4. To learn systematically: there is an overall game of chess in mind;

3. How to Conduct Systematic Learning:

1. Establish a knowledge framework;

2. Fill the skeleton with flesh and blood;

3. Find out the connection between the vertical and horizontal directions of each part.

Fourth, the complete process of systematic learning:

1. Draw a complete knowledge structure diagram;

2. Connect the knowledge points in this diagram with the specific learning content (fill in the flesh);

3. Transplant this interconnected knowledge system into the brain as a whole.

The most important thing is to see if you are interested in finding a spiritual support. Keep learning.

Solution: The mass and radius of the planet are set to m and r, and the earth is m and r. The speed of the ball is v1 and the speed of the ball is v2The mass of the satellite is m1 m=5m r=

From g*mm1 r 2=m1*v1 2 r v1= (gm r)g*mm1 r 2=m1*v2 2 r v2= (gm r)ek1=1 2m1v1 2 ek2=1 2m1v2 2ek1 ek2=(v1 2) (v2 2)=(gm r) (gm r)=(5m

So choose C

Because gravitational force provides centripetal force.

So. gmm/r²=mv²/r

ek=1/2mv²=gmm/2r

m is equal and g is equal.

The m ratio is 5:1

The r ratio is 3:2

So the ratio of the whole kinetic energy is 10:3

So ek2=3 10ek1=

So choose 10:3 = choose c

If you can't think of an answer to a question for a long time, ask yourself the other way: Why do I hate physics?

1. Have you lost confidence because your physics scores are too poor?

Second, do you hate it because you have a bad relationship with your physics teacher?

Only when you find the crux of the problem can you prescribe the right medicine.

In fact, learning physics is not as difficult as you think, first of all, you should relax your mind. Tell yourself:

Clause. 1. My interest is not in physics, but my brain is not stupid, and it may be difficult for me to learn well, but if I learn poorly, I must not be.

Clause. Second, so many physicists have been born in the world and have made outstanding contributions to society. It is also completely impossible for society to be separated from physics. Explain the mystery and charm of physical freedom, should I try to discover it?

Actually, all in all, it's because you lack the confidence to learn physics well that you hate it more and more. Don't force yourself to dig out the golden doll in one go. Freezing three feet is not a day's cold, you should start with the most basic books.

Figure out every knowledge point in the book, even if you can't grasp it all, you must know it in your mind. If you meet someone you don't understand, don't be discouraged first, try to solve the problem with your own ability. If you can't solve it, you can ask the teacher again, and cultivate your self-confidence step by step.

Your interest will come slowly.

Never underestimate your brain. Be good at using it wisely. It generally prefers to specialize in the question rather than accept the answer.

As a senior who has just escaped from the sea of suffering, I can only tell you in general...

A few points based on my experience:

1. Boost your confidence, even defying physics. (This is very important, in my peak of physics, I was never afraid every time I got a physics problem, but subconsciously there was a feeling that it would definitely do nothing, if you were already afraid before you read the question and thought about it, then you have already failed halfway, don't be afraid).

2. Don't drill when learning physics"Horn tip"Of course, this bull's horn tip refers to the kind of idea that is taken for granted and has no reason to be taken for granted, and at some point it must be drilled"Horn tip", and this is the tip of the horn that refers to the details that tend to be overlooked when solving certain problems.

3. The knowledge you don't understand must be understood. (Although I have never understood the new knowledge taught by the teacher every time, once I don't turn the book after sleeping in class, I still can't do the question, and the knowledge can only be used if I understand it).

4. When doing the question, you should review the question carefully, and there must be a reason when setting the formula, that is, a thinking process: after reading the question, according to the question, think of what physical quantities are needed in addition to the known, what physical quantities they need to be deduced from what formula, and what formula should be set in the case of the question, and do not mess with the formula, unless you can't do the question during the exam, you can write some formulas to get some points. Here's a simple example:

Pull an object flat on the ground with a force of 5n without pulling, tell you the dynamic friction factor between it and the ground and its gravity, and find the friction force. If you do not consider the situation given in the question, it is very likely that you will make a mistake by using the formula for finding the kinetic friction to find the friction force, but the fact is that using the formula of static friction f=f, the friction force is equal to the tensile force 5n.

5. Don't be afraid of trouble, don't have too many words or too cumbersome process for a question, this is the same as the first one, don't be afraid, can't be afraid...

Okay, that's pretty much it, I hope it helps.

The seniors who are about to go to the university will be presented.

This question is too general, I don't know what you think is difficult in physics? Or can't you remember the formula? Still there is no concept of a physical model.

I can repeatedly look at all the knowledge points and questions involved in the classic questions, and I feel that it is OK to thoroughly understand dozens of physics questions.

Let me teach you, first of all, you don't understand the definition of density, so you can't use formulas to solve problems at all, it's not that you can't memorize them, but you don't want to memorize them by rote and apply formulas mechanically. It is resistant from the heart, and it does not have a theoretical basis like math problems, so this situation is formed.

You do what I say, first understand the meaning of the formula:

1. I'll give you a primary school math problem first, and see if you can do it.

You ate 54 buns in two days, how many buns do you eat on average per day? You're going to do it, right?

With 54 for 2 days and 27 days. 27 days It means to eat 27 buns a day.

2.I'm going to give you another math problem for the upper elementary school, and see if you can do it.

There are two cubic meters of aluminum, its mass is 5400kg, find : the mass of aluminum per cubic meter? Would you?

Didn't you just use 5400kg 2 m = 2700 to find the mass of aluminum per cubic meter?

Now the phrase "the mass of aluminum per cubic meter" is renamed, and it's called the density of aluminum.

That is, the mass of aluminum per cubic meter of aluminum and the density of aluminum. How do you figure out 2700?

Let's use these numbers: 5400kg 2 m 5400kg can be expressed by the mass m that you have learned, and 2 m can be expressed by the volume v that you learned in elementary school, so you have come up with the formula of density p= m v

p Aluminum = 5400kg 2 m = 2700 kg m (2700 kg m) means "The mass of aluminum per cubic meter is 2700kg, but it is usually written in the form of scientific notation, which is x10 kg m. ”

3.The formula helped you push it out, I don't know if you understand? The rest of the time is to understand the other two deformation formulas, or to understand them. I hope it helps you and I wish you progress in your studies!

Don't worry, review physics from start to finish during the holidays, mark what you don't know, and don't leave the questions there all the time