Freshman high school students start with extracurricular learning physics

I recommend Zhao Kaihua's New Concept Physics: High School Reader and Qualitative and Semi-Quantitative Physics

You're going to your freshman year of high school now, and it should be the two best books for you.

The other books are more professional or too test-oriented, but these two books are suitable for high school students and are very helpful for physics ideas that I have seen.

There are basically very few physics forums, and you can go to Douban.

The third one you can find in the physics bar, there are many masters, but there may be time to teach you very little.

Personally, I feel that when you learn physics, you must first have a correct attitude, what do you ask when you study physics?

A big difference between high school physics and junior high school physics is that high school physics is more rigorous and quantitative than junior high school physics (I don't know how to express it).

From junior high school to high school, there is a transition period to establish a new concept of physics. Although high school physics often revolves around formulas and seems boring, personally, I find it interesting after studying it for a long time.

Although abstract formulas are not as intuitive as phenomena, they reflect the simplicity and beauty of physics. Some very complex phenomena can be summarized in a formula or equation, which makes physics really amazing to me.

Well, a lot of nonsense, get to the point.

1.If you can ask this question, you can know that your physics foundation should be good, or you won't think about self-study......I don't think there's a need to rush to read the book, just read the textbook a few times first (but the current high school textbooks are a bit too messy). At the beginning of the first year of high school, you should talk about some basic knowledge of mechanics (reference system, kinematics, dynamics, statics), which are the foundations of high school physics and must be firmly mastered.

There are also some mathematical concepts, such as functions, vectors, trigonometric functions, etc., which can be made up first, so that they can be learned faster. As for the books or something, because I didn't use them myself, it was a bit difficult to get the Olympiad at the beginning, and my opinion was to drill through the textbook. But there are also a lot of fools in high school textbooks, and some knowledge is very vague, so you have to look at some more advanced textbooks (I read the physics that my dad used in college, 1980, which is actually not very difficult, and calculus is ignored).

2.There are relatively few physics forums, I think you are just talking about it in the post bar, and there will usually be people.

3.Peers who are better at physics? It's not a big self-style, haha, but I'm very happy to communicate together, I'm 16 this year, send me a message if you need to.

Calculated based on v0=0, x=.

There are a total of n carriages, each of which is x long, and when the first carriage completely passes through the observer, the train displacement is x, and the elapsed time is 5s. x= gets x= 52

When the train passes all the way through the observer, the train displacement is nx for 20s, so there is nx = 202 again

From n=()2=16

Solution 2: Solve according to the ratio of time required for an object with zero muzzle velocity to experience a continuous equal displacement of 1:(1):(.

Because each carriage is equal in length, the ratio of time required when each carriage passes through the observer in turn should be 1:(1):( because the passage time of the first carriage is t1, the time taken for all trains to pass is t, and the time taken for all trains to pass through.

t=t1+t2+……tn

t1[1+（－1）+（

t1 substituting data 20=5 gives n=16.

High school freshman. Remember to study hard. If you waste time, you can easily be abandoned.

It's definitely not enough to learn physics by listening to the teacher's lectures, so you have to buy a tutorial book yourself.

If you have time, you can answer other people's questions, if you don't understand it, remember to search it, leave it to someone to solve it and then go and see if you ** No, next time you encounter a similar problem, don't make a mistake.

Finally, I will tell you that you must know how to classify the questions you have done. Because the solution method of each type of problem is similar, if you are familiar with these, you can quickly associate the problem solving method when you see the problem, and you can also improve the speed of solving the problem, which is the most basic thing to learn physics well.

I highly recommend "The Whole Docking of the College Entrance Examination and the Olympiad", which has a good use value for the cross-level improvement of physics, so that you can pull more distance between you and the second place, you want to be a group, I will give it to you, 66233513

It's all the groups I have at present, all in the liberal arts, science, and English, and there are a few that are particularly lively, don't let your mouth water.

The complete interpretation of the physics textbook in the first year of high school is more suitable for you! Published by China Youth Publishing House, available in all bookstores, with a white cover!

Study hard. If you waste time, you can easily be abandoned.

What I want to tell you is: hard work makes up for it!

Hello, I feel that it should be a very contradictory experience to wait for a bad high school, but you must stick to yourself, stick to your beliefs, study hard, and strive to be admitted to a good university.

Stick to your principles, become a leader here, and get into college with excellent grades. Remember to stick to what you believe in, choose the best class in this school, and become the leader here.

This kind of school will generally focus on what you are learning in school, but no matter which one you are, I hope you don't be afraid of people's opinions and just study hard. Don't let a bad high school judge your life, even in a very bad high school, it doesn't mean that your future is hopeless, and there are more and more examples of poor high school admission to good universities.

So, how do you study in a bad high school? Please take a look at the following high school study methods, I hope it can help you to listen carefully in class at the first point. It may be a bit difficult at first, but as soon as you follow the teacher slowly, it's actually very simple.

The reason why you can't listen to class is because you don't understand, and then you don't want to listen if you don't understand, which leads to a vicious circle.

This is the most important thing in the manuscript type, no matter what method you take, you must do it, if you don't listen to the class, how can you learn knowledge? Self-taught? If you can succeed in self-study, you won't fail the exam.

Good luck, <>

This relies on the lack of Kai ruler to accumulate grandchildren and high and <>

The first is the understanding of the basic content, whether you can learn physics well depends to a large extent on whether you can understand the physical concepts thoroughly. The best thing to do is to read the textbook. The content of each set of textbooks is summarized by the editor after careful consideration, and every sentence and illustration has its own value.

If you have nothing to do, just flip through the textbook to deepen your understanding of the concepts.

The second is the skillful use of formulas, in which the understanding of the correspondence between various physical quantities and the exact physical meaning is very high, which requires continuous practice to improve the mastery of formulas.

Again, we must be good at induction and summarization. Including each section, each chapter, connecting knowledge is actually just that. High school physics is always intertwined, and kinematics, mechanics, electromagnetism, optics, and heat are all closely linked.

Carefully summarize the content of each lesson, the key points of the concepts, the main points of the formula, and many more.

Finally, you must be calm and don't lose confidence because of the initial failure. Everything is difficult at the beginning, and after practicing for a long time, maybe when you look at these questions at the end, you will wonder why you didn't know it in the first place.

Good luck to the landlord

I'm a sophomore in high school, and my physics is very relaxed. First of all, in high school physics, you must master the concepts, you must memorize the formulas, and you can memorize more. Then do some very basic conceptual multiple-choice questions to deepen the concept.

In terms of big problems, we must pay attention to experiments, and calculation problems mainly rely on formulas. Sometimes, however, mathematical geometry is also used, such as the area method for a V-T image of a uniformly accelerated motion in the first year of high school. But the method of solving the problem is the most important.

Do more questions, and be very sensitive to formulas. That's how I learned, I didn't listen to the lectures in class, and I didn't do the materials sent by the teacher, and I followed my own method, which was very good. Like the usual exams, they are relatively simple and easy to pass.

When you practice to a certain extent, it becomes very unchallenging to do the difficult college entrance examination finale questions. But there is one point, experiments and basics are easy to ignore If you want to make friends, send me a message and I will tell you my QQ

The displacement is a valid segment from the start point to the end point.

The movement of a particle from one position to another in three-dimensional space is called the displacement of the particle in this motion. Displacement is a physical quantity that describes the change of the position of a particle, and its magnitude is equal to the straight-line distance from the starting point to the end point, and its magnitude is independent of the path, and the direction is directed from the starting point to the end point. It is a physical quantity with magnitude and direction, i.e., a vector.

If there is a change in the velocity of an object, it must have acceleration This sentence is wrong. Because there are variations in speed, including direction and magnitude.

The greater the acceleration, the greater the change in the velocity of the object. This sentence is correct, know that the speed before a second is used as v1=v0+gt. The displacement in only one second is decelerated by x=vt-gt (deceleration is done upwards from the reverse consideration). x=(v0+v1) 2*t, etc.

Displacement is the distance between two points.

In the example, if two people start from the same position, then they have the same displacement.

The following two, velocity change, there must be acceleration is right.

The second is not necessarily, it should be: the greater the acceleration, the faster the velocity changes...The third question. What are the conditions?

If the time is told. Directly with v=gt

If the displacement of this second is told. With vt 2-v0 2=2gs, where vt can be replaced by v0+g. Thus the solution is obtained.

1。Displacement is a vector quantity. Vector OK? Only the gap and direction between the beginning and the end are found. and the distance is different. The distance is to be counted in the sum of all the curves of the process.

2。A change in the velocity of an object indicates that it has had (note that it will be added next time) an acceleration. It's a bit of a less formal way of saying it. Also sloppy ok

3。The greater the acceleration, the greater the change. is wrong.

Acceleration simply indicates how fast or slow its velocity changes. It's still about time accumulation. For example, the rocket accelerates for that second.

And you accelerated for two days. Haha, you're more than the rocket speed now.

4。The formula of uniform acceleration linear motion is used to match uniform linear motion. The key is the concept of time and time.

The end of any second is actually the beginning of the next second. For example, the end of 2 seconds is actually the beginning of 3 seconds. That's 3 seconds, it's a 2-second time generation.

Counting the end of 3 seconds is to use 3 seconds of time.

Displacement in kinematics is a "directed line segment from start to end", if the start and end points are the same for two people, then the displacement is the same (magnitude, direction), regardless of the path!

If there is a change in the velocity of an object, it must have an acceleration. This statement is true, "The greater the acceleration, the greater the change in the velocity of the object." This statement is false, acceleration is not only related to the amount of change in velocity, but also to time!

Free fall motion is a special uniform acceleration linear motion, and the kinematic formula is all applicable to v=vo+gt

Displacement is a vector quantity. It can be said that there is a direction and a large and small line segment. Different paths only mean that they may have traveled different distances. As long as their initial and final positions are the same, their displacement must be the same.

I think the first sentence is right and the second sentence is wrong. The second sentence is wrong in not making it clear how much the velocity of an object changes in the same amount of time.

Solution: Let the velocities at the beginning of t seconds and the end of t seconds be at the beginning of v and the end of v respectively. The beginning of v = the end of GTV = g (t+1).

Listen carefully to the lectures

1.It has to be the same starting point, and it may be different from the distance 2The first is true and the second is wrong, and it has to do with time.

3.Let this second be the t second.

then vo=g(t-1).

vt=gt copy self-weight.

Personally, I think it is very important to understand, and the formula should not be memorized, but should be able to be deduced skillfully.

Interest is the most important thing! Do more questions! Seeing a lot, I naturally have a feeling, looking for ideas and summarizing.

Listen well to the lectures, and the most important thing is to do more questions and ask more questions.

In fact, the key is to get the principle right. It's only the first year of high school, and it's far away from the college entrance examination, so you don't have to worry about it now, the key is the college entrance examination in the future, and it doesn't matter if the college entrance examination is almost now. The key is the principle, to understand why.

High school is not as good as junior high school, physics, you should do a little more questions in class and listen carefully, if you meet a good teacher, you can do less, but if you want to be top-notch, you still have to do some questions. Only by achieving a certain amount of questions can you understand. The definition is dead, and there are some details that are unthinkable from the definition.

I think there are only a few fixed question types in physics and mechanics in the first year of high school, as long as you master a few fixed question types, it is OK (the specific question type teacher has talked about in class as an example question) and the most important thing in physics in the first year of high school is Newton's second law, which must be understood and flexibly used, but don't be afraid, the mechanics of junior high school has laid a good foundation for the mechanics of the first year of high school, as long as you listen carefully in class, there will be no problems at all (believe me, because I am also a high school student now, and I have a deep experience).