Is the farther and smoother the football, the easier it is to play, how to choose the football?

No, when choosing a soccer ball, you need to choose a soccer ball with a small pothole on the surface, so as to reduce the friction between the soccer ball and the air, and it is easier to send the soccer ball into the goal.

When we choose a football, we should first observe the material of the football, then look at the production process of the football, and finally look at the brand of the football.

Soccer balls are not the farther and smoother they are, they are better to play, and soccer balls with roughness are better to play. The selection of the football should be divided into indoor or outdoor selection, indoor selection of the No. 4 ball, outdoor selection of the No. 5 ball. When picking the ball, you should also pay attention to the thickness of the cushion on the surface of the ball.

When choosing a soccer ball, you also need to distinguish whether it is used on grass or on the ground to pick different balls.

The long-range range of a soccer ball is related to the amount of power the kicker has. However, the condition of the ball itself is also one of the decisive factors, and when choosing a soccer ball, you should choose a soccer ball with a smooth surface and obvious non-slip separation gap.

Not really

It is generally believed that the rounder and smoother the surface of the ball, the less friction the surface has with the atmosphere during flight, and the farther it should fly with the same force.

However, hydrodynamic experiments have found that smooth balls produce less area of low pressure than balls covered with small dimples. The numerous dimples on the ball allow the air to cling to the surface of the sphere, allowing the smooth flow of air to extend further back along the surface of the sphere before it separates.

The widely criticized "roundest football".

The 2010 South Africa World Cup match ball "Putian Tongqing" is composed of only 8 pieces of outer skin, and is spliced with thermal bonding technology, so that it is more round than before, which was called the roundest football in the history at that time, but it is this "roundest football" in the game because of the low goal rate, and is widely criticized.

Since the "Putian Tongqing" is smooth, the total suture length is very short, about 203 cm. After aerodynamic tests, it is found that the critical point of turbulence and laminar flow is 72-80 kmh, which happens to be the speed range of corner kicks and free kicks.

As a result, the unpredictable "Universal Celebration" when flying in the air made the team that is good at long-distance long pass transfer suffer a lot, and the Spanish team that is good at short passing on the ground took advantage of it; The goalkeeper must ** the direction of the ball to intercept it, and from time to time there is a "supernatural" movement state of "universal celebration", which makes it difficult for the goalkeeper to adjust to the ideal interception route, which is the reason why "universal celebration" has been criticized. Bury.

This statement is wrong, too smooth and not easy to kick at all.

1. The rounder and smoother the football, the easier it is to kick.

2. It is generally believed that the rounder the ball and the smoother the surface, the less friction between the sphere and the atmosphere during the flight, and the farther it should fly with the same force. However, in the book "The Wonderful Science of Fluid Motion" written by Mao Genhai, a professor at Zhejiang University, it is written that under the same conditions, a golf ball full of dimples will only experience half of the resistance in flight, and the flight distance is 5 times that of a smooth ball.

The South Africa World Cup match ball "Putian Tongqing" is composed of only 8 pieces of outer skin, and is spliced with thermal bonding technology, so that it is more round than before, which was called the roundest football in the past, but it is this "roundest football" in the game because of the low goal rate, and is widely criticized. In general, it is believed that the rounder and smoother the surface of the ball, the less frictional resistance it will have when flying, and therefore the farther it will fly. Atmospheric resistance is divided into frictional resistance and differential pressure resistance, and when an object is moving, the resistance caused by the pressure difference between the front and back is called differential pressure resistance.

Fluid mechanics experiments have found that compared with the ball full of dimples, Sun's smooth ball produces a lower pressure area and less differential pressure resistance. As a result, a rough ball can fly farther than a smooth ball.