It is no secret that the vast majority of well-known (and little-known) football players do not differ in special achievements in the field of physics and mathematics, just as there are no football stars among outstanding physicists and mathematicians. Meanwhile, they could be useful to each other.
Physics students at the University of Leicester (UK), having figured out the radius of the ball, the distance to the goal and the density of the air, have derived the exact formula for the ideal free kick that guarantees a 100% goal.
They decided to test their theory in practice during the traditional Big Bang fair, in which young British scientists participate. Riva Kesley, a member of the England junior women's soccer team, practiced and tested the “perfect” hitting on the ball. According to the authors of the formula, knowing the size of the ball, the density of the air and the distance to the goal, a football player can hit correctly, scoring a goal each time.
The formula reflects the behavior of the ball in flight when it is affected by the so-called Magnus effect. To a person ignorant of mathematics, this formula may seem complicated. But in fact, it is just a mathematical expression of what great football players do all the time before taking a free kick, free kick or penalty kick.
For example, a player getting ready to shoot a free kick stands 15 meters from the ball. In order for it to accurately fly into the goal, it needs to be given a speed of 35 m / s, an angular speed of 10 rev / s, which will make the ball fly in a 5-meter arc.