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29 Cards in this Set
- Front
- Back
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acceleration |
The rate of change of velocity per unit of time. |
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angle of pull |
The angle at which a muscle pulls relative to the long axis of the bone on which it pulls. |
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biomechanics |
The study of the mechanical aspects of physical movement, such as torque, drag, and posture, that is used to enhance athletic technique. |
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center of gravity |
The point in the body around which your weight is equally distributed. |
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direction |
Refers to the way in which a force is applied. |
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first-class lever |
Fulcrum in the middle, the effort is applied on one side of the fulcrum and the resistance on the other. |
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force |
The interaction that creates work, action, or physical change. |
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fulcrum |
The point on which a lever rests or is supported and on which it pivots. |
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gravity |
The downward pulling force that creates resistance. |
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inertia |
The tendency for an object to remain in its current state (of motion or rest). |
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kinesthesis |
The ability to perceive your position and movement of the body limbs in space. |
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lever |
A rigid object, hinged at one point, to which forces are applied at two other points. A lever transmits and modifies force or motion. |
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line of action/line of force |
Refers to an imaginary straight line drawn from the point of application of force through the direction of force. |
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line of gravity |
A vertical line straight down from the center of gravity. |
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magnitude |
Refers to how much force is applied to the dumbbells, barbells, or machine handles. |
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mass |
A body of coherent matter. |
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momentum |
The quantity of motion of a moving body, measured as a product of its mass and velocity. |
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moving inertia |
An object is in motion it will stay in motion unless acted upon by some outside force. |
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point of application |
Where the force is applied on the body or implement being used. |
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power |
In physics and in most sports: the work done in a unit of time. Force times distance divided by time. |
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range of motion |
The movement of a joint from full flexion to full extension. |
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resting inertia |
An object is at rest, it will stay at rest unless acted upon by some outside force. |
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second-class lever |
A lever in which the load lies between the fulcrum and the effort. |
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stability |
The ability to maintain a balanced state. |
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third-class lever |
A lever in which the effort is placed between the fulcrum and the load. |
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torque |
The magnitude of twist around an axis of rotation (fulcrum). |
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velocity |
The speed of something in a given direction. |
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visual reference point |
A chosen point of focus to aid in stability and balance. |
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work |
Force times distance, measured in foot-pounds and similar units. |
