The Answer

After analysing the biomechanical factors that come into the equation when performing an in-step soccer kick, the findings point out that it is very difficult even at a professional level for an athlete to achieve optimum force and ball speed to perform an accurate soccer kick. There are many factors that effect both ball speed and accuracy; the individual can influence some, while other factors are determinant of features of the environment, such as gravity, and air resistance. According to James Watkins, a professor of Sports Science, the velocity of a kicked ball is 30 metres per second, or 67mph. The force of the ball can be determined by the impulse-momentum form of Newton's second law of motion, while holds that the force equals the weight of the ball times its velocity divided by the time of foot contact (Watkins, 2007).

Although ball speed has been widely accepted to be the main biomechanical indicator of kicking success, there are good reasons to reconsider this notion of kicking accuracy as it may be more important, as it applies to most of all passing and kicking throughout the game. Depending on the nature of the game, errors can occur for athletes trying to achieve maximum ball speed, and accuracy. The Magnus effect, momentum and velocity are all factors that impact the speed and accuracy. There are also several other factors like fatigue, age, gender, and limb preference, that cause biomechanical changes that impact on the principles. For example, fatigue involves the development of less than the expected amount of force as a consequence of muscle activation that is associated with sustained exercise and is reflected in a decline in performance. Fatigue causes a decline in leg power, and was concluded that together with the force capacity results, fatigue disturbed the effective action of the segmental interaction during the final phase of the kick, which led to a decreased ball speed, and ball/foot speed ratios (Kellis & Katis, 2007)