Sports
Scientists say they can explain Usain Bolt's extraordinary speed with a mathematical model.
Usain Bolt will not be happy about this.
Is Usain Bolt still the fastest man?
Usain Bolt will not be happy about this.
David · 10 years agopermalink · reply (0)
Is Usain Bolt still the fastest man?
Timmy · 10 years agopermalink · reply (0)