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FEA or finite element analysis is another engineering modeling tool that applies to the field of sports engineering to simulate the physics of applied forces acting in a system. For example, FEA analysis can be used to analyze the impact of a ball against a tennis racket or different the deformation resulting from the impact of a football. [1]
A tennis ball. At least eight players are needed for this game. Two players start on the baseline, the back line of the tennis court, of each side with the court split in half vertically. Two tennis balls are played simultaneously on each half of the court starting with a drop hit. A drop hit is an underhand hit by bouncing the ball first.
As a skill toy, poi is an object or theatrical prop used for dexterity play or an object manipulation. As a performance art, poi involves swinging tethered weights through a variety of rhythmical and geometric patterns. Poi artists may also sing or dance while swinging their poi.
A weak serve can be easily attacked by an aggressive returner. The first ball after the serve is also key. Players should serve in order to get a weak return and keep the opponent on the defense with that first shot. For example, following a wide serve, it is ideal to hit the opponent's return to the open court.
This grip is known as "the Shotgun". This is due to its strange nature of attack and pressure on the ball. Whenever it is used, the grip must be applied firmly, near the shaft of the racket to properly produce enough effect. This will cause the racket to come explosively on the ball, like a shotgun. Hence, the name "Shotgun".
The cascade is generally performed with the balls caught to the outside of the throws, with the inverse known as a reverse cascade. Many tricks or patterns are generated from mixing cascade and reverse cascade throws. For example, tennis (siteswap: 3 [7]) one ball is thrown over (reverse) while the other two are thrown under (inside).
A serve (or, more formally, a service) in tennis is a shot to begin the point. The most common serve is used is an overhead serve.It is initiated by tossing the ball into the air over the server's head and hitting it when the arm is fully stretched out (usually near the apex of its trajectory) into the diagonally opposite service box without touching the net.
Tennis technology. Tennis ball – hollow rubber ball approximately 6.7 cm (2.7 in.) in diameter, covered in bright green-yellow fibrous fluffy felt. For recreational play tennis balls can be any color. Tennis racquet – Tennis court – There are four types of tennis court: Clay court – Grass court – Hard court – Carpet court –