Watch hi-speed athletes in action
How fast is the fastest serve and how do tennis players manage to hit the ball so fast? How do bowlers manage to throw a ball with such force? It’s hard to imagine being able to propel a ball through the air at speeds of 130 miles per hour, but some sports people can do just that. Have a look at these achievers and see just how powerful the shoulder joint can be ... and watch a top tennis player take one of his powerful serves – in slow motion!