Aplicação de conceitos no futebol: desvendando a física por trás do chute do Roberto Carlos

Abstract

In this work we carry out an analysis of the free kick performed by the player Roberto Carlos, in the game Brazil versus France for the Torneio da França in 1997. We divided the free kick into three parts: player running until the moment before kicking the ball; the movement of the player's foot until it reaches the ball and the beginning of the movement of the ball; and the movement of the ball after the kick, where it curves in its trajectory. In this Course Completion Work we focus on the second part of the movement of the free kick charged in the tournament. In view of the difficulties of Basic Education students to understand the Physics involved in generic concepts, purely mathematical and knowing that the national passion is football. We ask: how was Roberto Carlos' foot movement transferred to the ball? Can we estimate the initial speed after the player's kick with the speed found by television cameras at the time? In the development of this work, it was shown how the transformation of the movement was performed and the initial velocity of the ball after the kick was estimated. For this, we use the fundamental concepts, such as: length of a circular segment, mass, velocity, linear momentum, conservation of linear momentum and collisions. The continuation of this study would be the explanation of the curved movement that the ball after the free kick.