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المصدر:
The Guardian
Trionda World Cup ball poses goalkeeper risks
The article discusses how the new Adidas Trionda World Cup ball is causing difficulties for goalkeepers due to aerodynamic effects, specifically the drag crisis that causes the ball to accelerate unexpectedly at certain speeds. This phenomenon has contributed to errors by goalkeepers, including Luca Zidane, who has conceded goals in the tournament. Researchers from South Korea and Japan have analyzed the ball’s flight dynamics, revealing how its design influences trajectory and speed, complicating goalkeeper reactions.
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