Kin3514_ch8

Kin3514_ch8 - Chapter8 LinearKinematics...

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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Click to edit Master subtitle style Chapter 8
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Objectives Describe how kinematic data are collected. Distinguish between vectors and scalars. Discuss the relationship among the kinematic parameters of position,  displacement, velocity, and acceleration. Distinguish between average and instantaneous quantities. Conduct a numerical calculation of velocity and acceleration using the  first central difference method. Conduct a numerical calculation of the area under a parameter-time  curve. Discuss various research studies that have used a linear kinematic 
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Linear Kinematics Kinematics describes spatial and temporal components of  motion. Linear kinematics deals with rectilinear (straight line) and  curvilinear motion.
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  FIGURE 8-1 Types of  translational motion. A.  Straight-line or rectilinear  motion. B. Curvilinear  motion. In both A and B,  the motion from A1 to A2  and B1 to B2 is the same  and occurs in the same  amount of time. Linear Kinematics
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Collection of Kinematic Data Data acquisition for quantitative analysis can take many forms. Accelerometers (measure acceleration directly) Photographs (may be suitable for static analysis) High-speed video or optoelectric systems  Velocity and acceleration can be analyzed from digital positional  data.
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Collection of Kinematic Data FIGURE 8-2 A. A two-dimensional reference system that defines the motion of all  digitized points in a frame. B. A two-dimensional reference system placed at the  knee joint center with the y-axis defining the long axis of the tibia.
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Collection of Kinematic Data FIGURE 8-3 The quadrants and signs of the coordinates in a two-dimensional  coordinate system.
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Copyright © 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins  Two dimensions are adequate for simple planar movements. Three-dimensional coordinate system must be used for more  complex movements.
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This note was uploaded on 11/18/2010 for the course KIN 3514 taught by Professor Lili during the Spring '09 term at LSU.

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Kin3514_ch8 - Chapter8 LinearKinematics...

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