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Linear Kinematics of Human Movement. Studies “the geometry, pattern, or form of motion with respect to time.” Important in the study of skill technique and performance. Useful for analyzing and improving athletic skill performance.
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Linear Kinematics of Human Movement Studies “the geometry, pattern, or form of motion with respect to time.” Important in the study of skill technique and performance. Useful for analyzing and improving athletic skill performance. Widely used in the study of motor development and rehabilitation. (pp 320-321)
Linear Distance and Displacement • Linear Distance • The total length of the path traveled by a moving object. • Linear Displacement • The straight line distance from the start to the finish of the path of a moving object. • Units • Linear displacement and distance are measured in distance units (ft, m, cm, km, miles, etc.)
finish start • Linear Distance – In a 200 m race, the race distance is determined by the actual path covered by the runner.
finish start • Linear Displacement – In a 200 m race, the displacement is the direct distance across the infield from the start to the finish. displacement
Linear Velocity • Average Linear Velocity – Found by dividing the total distance traveled by the time it takes to cover the distance. This doesn’t account for an increase or decrease in velocity during the movement. • EXAMPLE: A runner takes 10 s to run a 100 m race. The average velocity during the race is: v = 100 m/10 s = 10 m/s
Linear Velocity • Instantaneous Linear Velocity – The actual velocity at a given instant during a movement. • EXAMPLE: At the 15 m point in a 100 m race a runner may be moving at 7 m/s while at the 60 m point the velocity may be 12 m/s. This accounts for changes in velocity during the race.