Miles per hour be used to express the speed of delivery of a ball in sporting events such as cricket, tennis and baseball. Miles per hour Miles per hour (abbreviated mph, MPH or mi/h) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. It is used in the United States, United Kingdom and many Commonwealth nations, particularly in the Caribbean region. Speed limits and road traffic speeds are given in miles per hour in the following jurisdictions (elsewhere kilometers per hour are used): Road traffic speeds in other countries are indicated in
Speed-ball Speed-ball Speed-Ball is a racquet sport invented in Egypt in 1961 by Mohamed Lotfy for the training of beginner tennis players. Today it is a sport in its own right, enjoying popularity not only in Egypt but in other countries. Several of these countries make up the International Federation of Speed-Ball (FISB). A hollow ball in latex revolves around a metallic mast (1,70m high) which is linked by a nylon thread (fishing thread type) of 1,70m length. The thread is knotted to the mast by a loop or a plastic ring freely revolving around a reel. The mast is fixed