?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F497%2F&rft.title=Spinning+Soccer+Ball+Trajectory&rft.creator=Chen%2C+W.&rft.creator=Cor%2C+B.&rft.creator=Konuralp%2C+A.&rft.creator=Reis%2C+T.&rft.creator=Sengul%2C+S.&rft.subject=Sports&rft.description=As+can+be+remembered+from+the+recent+World+Cup%2C+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%2C+a+layer+of+air%2C+say+a+boundary+layer%2C+follows+the+motion+of+the+ball%2C+thus+spins+with+it.+This%2C+in+turn%2C+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+%CF%89+represents+the+axis+of+spin+and&rft.date=2010&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F497%2F1%2Fsoccerballson.pdf&rft.identifier=++Chen%2C+W.+and+Cor%2C+B.+and+Konuralp%2C+A.+and+Reis%2C+T.+and+Sengul%2C+S.++(2010)+Spinning+Soccer+Ball+Trajectory.++%5BStudy+Group+Report%5D+++++