The fastest ever serve recorded; 251 Km/h, was by Ivo Karlovic.
Jai-alai
The fastest recorded speed for a ball in competition is 131 mph (211 km/h) from a tennis serve hit by Samuel Groth in 2012.
It is hard to determine what the average speed of a tennis serve is from various players, but Sam Qurrey is among the fastest serves of all time. He has recorded a serve of 141 miles per hour at multiple events.
The fastest volleyball serve ever recorded was made by György Grozer, a Hungarian volleyball player, with a speed of 134 km/h (83.5 mph) during a match.
The fastest non-mechanized sport in the world is ski racing or speed skiing. Second would be a tennis serve. The speeds reached in speed skiing are approximately 162 mph, and 262 kph
75.2 metres/sec = 75.2 x 3600 met/hr = 75.2 x 3.6 km/hr ie 270.72 km/hr
It depends on how hard you want to hit the ball
Milos Raonic...with a serving speed of 225km/h
Australia's fastest animal is the Kangaroo. The fastest recorded speed of a Kangaroo is 70 km/h which is 25 km/h FASTER than the fastest recorded speed of Australia's flightless bird the Emu.
214 mph
75 mph