Trampolines
• with a full load of internal fuel a F-16 fighter plane can withstand up to nine Gs (nine times the force of gravity) when making a sharp turn?
• the modern trampoline was invented around 1934 by door George Nissen and Larry Griswold as a piece of exercise equipment for springboard divers?
”the Ko Brothers” have made a song about trampoline jumping and that Etan sponsored it?
• trampoline jumpers can reach great heights?
• the sports hall in which trampoline jumpers train has to be at least 8 metres high?
• the sports hall in which trampoline jumpers train will have to be at least 8 metres high?
in the beginning of the 20th century acts were performed in which the so-called "bouncing beds" were used to entertain the audience?
• the bouncing bed actually was a small trampoline covered with bedclothes on which the acrobats performed, usually funny, tricks.
• the first form of trampoline jumping was practised by the Eskimos? They used whale skin to toss each other up into the air.
• the circus is the cradle of the sport of trampoline jumping?
• trampoline jumping has been an Olympic sport since the year 2000?
• in 2001 Martin Kraft, who was an active jumper of the trampoline association of the
University of Karlsruhe during his study, made a mathematic model of the trampoline? With the use of that model it was calculated that a child of 40 kg has to endure 9 times the force of gravity when doing a 2-metre jump.
Basketball
• basketball was originally invented by the Incas who played the game in a stone field with a stone ring which was suspended vertically?
• the net hangs at 3.048 metres?
• that they used to play with champagne corks or balls of wool?
• the bats used to be made of, for instance, cork, parchment, wood and velvet?
Poolbilliard
• (pool)billiards initially used to be played as a field sport?
• the billiard cue was developed at the end of the 17th century?
• when cueing off a temperature can be reached of 250 degrees underneath the ball?
• the Frenchman Lucien Rosengart is the inventor of the first soccer table? He lived from 1880 to 1976.
Table soccer
• the sport of table soccer has only developed after the 2nd world war?
• (during the second World War the trampoline was used to train pilots?)
• (American soldiers still get trampoline training as part of their education in the army?)