# Shared Flashcard Set

## Details

Quest 1
Powerpoint review
30
Physics
09/01/2015

Term
 Kinesiology
Definition
 The scientific study of muscular activity and the anatomy, physiology, and mechanics of movement.
Term
 Rotary (angular)Translatory (linear)General plane
Definition
 Three types of motion
Term
 Distance (displacement)Linear velocity (m/s)Linear acceleration (m/secsquared)
Definition
 Linear motion quantities
Term
 ROM (degrees, radians)Angular velocity (degrees/sec)Angular acceleration (degrees/secsquared)
Definition
 Angular motion quantities
Term
 Force
Definition
 What is the cause of linear motion?
Term
 Torque
Definition
 What is the cause of angular motion?
Term
 Moment
Definition
 Torque with direction defined?
Term
 Line of gravityBase of supportHeight of center of gravity
Definition
 Factors affecting the stability of a body?
Term
 α=τ/I
Definition
 Formula for angular acceleration
Term
 Linear
Definition
 Force systems: forces acting on the same object and in the same line
Term
 Concurrent
Definition
 Force systems: two or more forces acting on an object in a common point of application, but in divergent directions
Term
 Parallel
Definition
 Force systems: Two or more forces acting on the same object, parallel to, but at a distance from one another
Term
 Positive work
Definition
 Internal moment generated by muscles exceeds external moment resisting it
Term
 Direction and magnitude
Definition
 Vectors possess?
Term
 Moment
Definition
 Radius from axis of rotation x magnitude of force causing the rotation
Term
 Moment arm
Definition
 perpendicular distance from point of application of force to axis of rotation
Term
 Mechanical advantage = 1fulcrum between effort arm and resistance arm
Definition
 1st class lever
Term
 mechanical advantage greater than 1resistance arm between fulcrum and effort arm
Definition
 2nd class lever
Term
 mechanical advantage less than 1effort arm between fulcrum and resistance arm
Definition
 3rd class lever
Term
 90 degrees perpendicular
Definition
 Moment arm is greatest when force is applied how in relation to the lever
Term
 Increasing magnitude of internal forceApplying the force perpendicularlyIncreasing the moment arm
Definition
 Joint moment can be increased by what?
Term
 Interaction torque
Definition
 The effect of the movement of one joint upon the movement of another joint (or series of joints) within the kinetic chain.
Term
 Damping
Definition
 Energy absorption
Term
 Coordination
Definition
 An organized relationship between two or more body parts, (joints or muscle groups,) and/or nervous system (brain and spinal cord) circuitry, to facilitate the achievement of a movement goal
Term
 Invariants
Definition
 Not free at all to vary
Term
 Restraints
Definition
 factors which do not vary by design
Term
 Constraints
Definition
 Behaviors naturally facilitated, but not obligatory
Term
 Degrees of Freedom
Definition
 factors which are free to vary, so long as invariants, restraints, and constraints are preserved
Term
 Short loop reflexes may contain as few as one synapse, basic action. Long loop reflexes are more complicated and may contain several synapses. More of a motor skill than a basic action.
Definition
 Long-loop vs. short loop reflexes
Term
 Proprioception
Definition
 Sensation of muscle tension, joint position, angular acceleration, pressure, (and vibration).
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