If you put a ping pong ball down a vertical wall, it will roll down the wall or fall off the wall

Leave the wall and fall.

Explained in terms of aerodynamics:

During the fall, the air on the side of the table tennis ball against the wall is blocked, the flow rate is slow, and the air pressure is high.

The side away from the wall has fast air flow and low air pressure, which forms the air pressure difference between the two sides of the table tennis ball, and the table tennis ball will be far away from the wall due to the period. Until the air flow velocity on the 2 sides of the table tennis ball is balanced, the pressure difference is balanced.

The principle can be found in Aerodynamics.

If you analyze the force, if you want to roll, there must be friction between the wall and the table tennis ball, but when the table tennis ball falls freely, there is no friction on the wall, so it will leave the wall and fall.

If you want to consider the gravitational force between the table tennis ball and the wall (of course, this force is very small), the table tennis ball will be subject to the friction of the wall, so that a certain amount of rotational torque will be generated, then the table tennis ball will have a slight rotation. However, gravity is generally not taken into account, so the ping pong ball will fall vertically.

If the fluidity of the air is not taken into account, the ground floor is correct; If you take into account that air is fluid, the ping pong ball will hit the wall and bounce off.

It doesn't roll, it just falls like that, as long as the wall is upright!!

Counting the roll, ideally, it will be subject to friction and gravity.

Drop, because they didn't squeeze each other!

Fall off the wall. Tried.

Fall!! Because if you roll down, there's friction, and there's friction, there's friction, there's vertical pressure, and if there's pressure, the ball leaves the wall, and it doesn't roll down, it doesn't fall!

Theoretically not.

But if there is static electricity, it will be strangled.

Of course you won't roll down, you're making movies.

Try it yourself.

Table tennis against the wall is one of the beginner stage of hand practice means, ball support, batting practice are the basic things of table tennis, playing against the wall will enhance the judgment of the ball landing point, is the first lesson of the introduction.

It's very useful to develop a sense of the ball and help you practice other techniques in the future.

Practice crosshairs, cultivate ball sense, and practice eyesight.

Entry can be improved also to play on the table.

Of course there is, you can cultivate the foundation for future training, I have been playing for 5 years, and I have been hitting the wall at the beginning!

Hitting the wall is completely different from playing against people, and practicing hitting the wall is just about practicing the reaction speed of catching the ball. I used to be a table tennis enthusiast and I only thought about playing table tennis and how to practice serving all day long, but sometimes it was fun to play against the wall, and the key thing was the inclination and strength of the racket.

The first thing to grasp is the inclination of the racket, the paddle is facing up, and the inclination between the back of the paddle and the ground is about 45 degrees, so that it is easier to catch the ball on the wall and continue to play. Strength is also a key to the wall, mastering the strength determines the speed of the wall, if not a very good speed is not too fast, when practicing to find a distance that you think is better, and then adjust the strength yourself, master the distance to adapt.

The difference between people and playing is that one wants to hit the bottom ball and one wants to top the high ball, and when playing against the wall, we must control the tilt of the paddle surface, and when it is too high, we must pour it down, and we must tilt it up when it is too high, and the way to play it is to use the top not to push. It is relatively simple to shoot horizontally or vertically, because as long as you master the strength and inclination, you can do it, but you must be proficient in the exchange application of the front and back to last. There is time to practice, and the ball is practiced.

Useful for novices, some basic movements can be practiced.

The role of playing ball on people and playing on the wall is different, one of the means of hand practice in the beginner stage of table tennis against the wall, holding the ball and hitting the ball are the basic things of table tennis, and playing on the wall will enhance the judgment of the ball landing point, which is the first lesson of the introduction. Walls don't have the same flexibility as people, so playing against walls can only practice some basic movements and reaction speeds and some basic skills, and it doesn't help much for flexible playing skills.

To be honest, I've tried this before, but if you're really in the right hands, then I'd advise you to give up the sport. Because table tennis balls are played one by one, there are no shortcuts. It's impossible to see the practice against the wall to really improve your technique, so it's just for relaxing when you're free.

Of course, my answer is a bit one-sided, if you haven't hit the ball before, it's okay to find a feel for the wall, and the advantage is that the control of the ball will be slightly strengthened, but with little effect. Rather than this, it is better to learn a good serve on the Internet or by yourself, send it to the air, the better the hair, the stronger the concealment, the better, and a good serve is the foundation of table tennis.

As for the upstairs saying that you can be proficient in movements, I think it's a fantasy.

To be honest, hitting the wall does help with the feel of the ball, but only for the spin and landing of the ball. Rather than that, it might be better to ask someone to turn the ball around in front of you, wait until the ball bounces on the ground, and then try to hit the ball back into the server's position.

Of course it works for hitting the wall! That recommended answer will mislead you.

Benefits of hitting the wall:

1. Familiarize yourself with the ball and increase the ball sense. ——Especially when you get started, you can quickly grasp the elasticity index of table tennis, that is, the ball and the ball sense, and when the ball is familiar, you will know how fast to return the ball and where to go to catch the ball. Very useful.

2. Proficient movements. - Hitting the wall can also be played not monotonous, and it is very exciting. When hitting the wall, don't forget to practice footwork and movements.

Walls don't give you rotation, but it doesn't prevent you from practicing rotation on your own. You can practice the forehand arc by slowly pulling gently to find a suitable coherent rhythm so that you can continue to practice. Similarly, you can practice arcs with your backhand.

You can also practice running and swinging speed on the left board and the right board. As long as you want to, you are willing to use your brain, and you can practice very well alone.

To tell you the truth, my backhand horizontal pull and horizontal play was slowly practiced by gently pulling the arc circle against the wall.

It can only be said that practicing reflexes and cultivating a certain hand feel. Actual combat practice still has to be practiced on the stage.

Yes, but it's better to go out and play with someone else often, so that you can improve more

I agree that it is useful and very useful.

If you can do the following three things: If you are not a master in the amateur world, you can hack me6 meters away against the wall.

2.You can play 300 rounds at a time.

3.Draw a circle on the wall, 50cm in diameter, and hit 4Take it a step further and sit and hit you try it.

Not to mention the fourth point, if you can do these three things, it is absolutely very, very powerful, go to the table and play casually, a little suggestion, buy more than 200 balls, so that you can easily pick up the ball, play non-stop.

Useful, playing on the wall can improve the accuracy of receiving the ball, practice more to practice the sense of the ball, more suitable for beginners to practice at home, when playing the appropriate point to turn or play faster, are effective, but the key is to play more actual combat (more friends to play), the technique will rise quickly, if you want to improve the technique more, you can lay a good foundation by yourself, and then find a table tennis class to learn. I was also very good when I first played, but I have been playing with others in school, playing for three years, and now I am playing very well in school, and there is another point, you need to have an interest in table tennis, to integrate into it, in order to perform better, it is also useful to study some of your own more applicable methods, and it is better to swing more professional movements with the racket.

In fact, there is a rhythm, just like the players on both sides of the table tennis court practice, as long as you master that rhythm well, it is no problem to play 100.

This kind of thing can be tested.

The sweetheart on the slap all the time (good control).

I also enjoy playing table tennis. At the beginning, one person said to me, if you want to play table tennis well, you have to play against the wall first. I am sure that you will succeed.

Also, you'll have to fight more masters.

If you want to juggle the ball, you can continue to do about 300 without landing (although it is very difficult, as long as you practice more), so that it is not easy to miss when practicing against the wall (master the ball!). Trust me! Preschools practice like this!

The force is lighter, and there is a feeling of springing.

The paddle face should not stand upright, but tilt up a little, and the flight trajectory of the ball is diagonally upward.

It's easier that way.

Don't go too fast, there will be a situation where you will hit faster and faster. The main thing is to grasp the rhythm, hit the ball with a straight shot, use the ** force of the ball and the wall, and add a little strength. It's good to be skilled.

This is a matter for preschoolers.

Hit the wall, the strength should not be too large, or too small, and the strength and the distance you stand should be estimated

Of course you can, but it has to take a long time, you have to sweat, if you don't fight after a few hits, then you can't **.

Yes, as long as you keep practicing every day.

As long as you can move your muscles. It has the best effect of making the whole body move, but according to personal experience, it seems that it is effective with diet adjustment.

Yes, in fact, as long as you exercise, you can**!

Yes, yes, but the effect is too obvious.

In my ** method, it is. You have to make one thing important to you**. Like what.

You used to have a boyfriend or girlfriend and you were in a good relationship, but in the end he [she] broke up with you because of your bad shape. Then you will have made up your mind. That's how I am.

Other things can be as long as you value them.

Yes, as long as the exercise burns calories

Jogging is OK**.

But each jog must be more than half an hour.

will have the effect of **.

Yes, but the effect is not ideal, if the conditions allow, go to the gym!

Open your feet, shoulder-width apart, relax your whole body, the wall should be flat, about 1m away from the wall, breathe evenly, shoot with your right hand, throw the ball with your left hand, this position is best to control the ball!

That's right, 350 a minute, an average of almost 6 per second, can you count it?

The closer you are to the wall, the more you hit. In fact, in addition to practicing reaction and ball sense, I don't think this method is very useful.

Draw a circle on the wall, 1m in diameter, align the circle and play inside, lunge with both feet, the left foot is 30cm forward than the right foot, and the upper body leans forward slightly.

Start slower and then speed up slowly. This way your skills may improve.

Rhythmic uniform speed improvement.

350 a minute? Shenma level...

It can improve the feeling of hand-to-hand on the ball, but it can't improve the level, but if you practice against the wall for a long time and then receive a little more formal training, the level will improve quickly.

Playing against the wall can improve the ability to defend, but it does not improve the basic technique, and it is not suitable for maintaining strength.

Suggestion: often consult and duel with masters, find some videos of international competitions to watch, learn some special techniques, and practice basic skills diligently.

I used to be the champion of the intercollegiate high school, but now I have returned to the easy level, because I have not practiced for a long time. So, diligence is the best teacher.

It can improve the ability to draw flat and block flat.

It is necessary to add exercises of forearm and wrist strength, otherwise after the technique reaches a certain level, the reaction speed will not be able to keep up.

Playing on the wall, in addition to practicing the feel, if you can match the pace, the effect is better.

If you practice flat whipping, stand with your feet parallel to each other, keep your heels on the ground, and move your pace with the ball.

When practicing lob, use the strength of your wrist to hit the ball with your right foot in front and your left foot in the back, and the point of impact should be at the waist.

ministry or below.

Technology can't improve anything!

It just strengthens your ball sense

This is also very important!

My easiest: No! It should start by practicing the basics!

It won't improve! On the contrary, you have been playing for a long time! The action is not standard! So it is recommended that you do not fight!

You can only practice the feel, but not the technique.

Although you can't practice technique, I recommend that you stay close to the wall because it will improve your agility! Oh, I will too! I'm in 6th grade! My highest record is 672, haha, you elders!

I've practiced, it's useless, but it's quite exercised.

You can improve your ball feel and your own ability.

Later improve very quickly.

It's a great idea for beginners.

Of course, it doesn't land! If you land, the speed of the table tennis ball is too slow, and it is not interesting. As for eyesight, you can try it.

I played table tennis for 5 years. From the second year of junior high school to the third year of high school (I am only graduating from the third year of high school). The study pressure is too much, and there are no more than 5 classmates in the class who don't wear glasses, and I am one of them.

I don't know if it's because I play table tennis every day. However, you can try, hehe, it's cool to play table tennis.

I feel that when I am tired, I will not fight.

If you're a beginner, just play for more than 20 minutes.

More eye fatigue has a certain relieving effect, and it is recommended to cooperate with scientific means to facilitate daily adherence.

Reflexivity is paramount. Well, your eyesight shouldn't be able to improve, you can only keep it, don't practice for too long.

The main thing is to improve your reflexes, hehe, but this will not be good for the ball, it will be easy to break.

No matter how you play table tennis, you can protect your eyesight, provided you have long-term persistence. Playing table tennis against the wall is no exception, because in the process of playing table tennis against the wall, the eyes follow the trajectory of the ball, which is good for protecting eyesight. If you want to improve your eyesight, it is generally for people who already have pseudo-vision or myopia, but you can eliminate myopia or reduce the degree.