relation: http://miis.maths.ox.ac.uk/miis/497/ title: Spinning Soccer Ball Trajectory creator: Chen, W. creator: Cor, B. creator: Konuralp, A. creator: Reis, T. creator: Sengul, S. subject: Sports description: As can be remembered from the recent World Cup, uncertainties in the trajectory of a soccer ball at high speeds have led to some criticism on the ball manufacturers. The existing ball trajectory models assume that as the ball spins, a layer of air, say a boundary layer, follows the motion of the ball, thus spins with it. This, in turn, induces a velocity difference on the sides normal to ball's trajectory. The velocity difference then leads to pressure difference due to Bernoulli's principle. If ω represents the axis of spin and date: 2010 type: Study Group Report type: NonPeerReviewed format: application/pdf language: en identifier: http://miis.maths.ox.ac.uk/miis/497/1/soccerballson.pdf identifier: Chen, W. and Cor, B. and Konuralp, A. and Reis, T. and Sengul, S. (2010) Spinning Soccer Ball Trajectory. [Study Group Report]