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26 Cards in this Set
- Front
- Back
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Force that produce, stop, or modify motion of either body as a whole or body as a segments. |
Kinetic |
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Motion of the body /or segments |
Kinematics |
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Displacement of a body or one segment from one point to another |
Motion |
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5 variables to determine body or segmental motion |
1. Type of motion 2. Location of the motion 3. Magnitude of the motion 4. Direction of the motion 5. Rate of motion at which the motion occurs |
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2 types of motion |
1. Rotary motion 2. Translatory motion |
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Movement around the axis |
Rotary motion |
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Linear displacement/ movement in a straighy line. |
Translatory motion |
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How far a force moves a body |
Distance |
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Translatory or linear distance has what unit ? |
Meters or feet |
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Rotary distance has what unit ? |
Degrees |
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Rate at which a body or segment moves |
Velocity |
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Rate at which a change in velocity occurs |
Acceleration |
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Force applied in an arc of motion around an axis |
Torque |
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Motion of a body or segment that occurs when force is applied |
Displacement |
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Push or pull that produce displacement |
Force |
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Force has 2 dimensions |
1. Magnitude 2. Direction |
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Both forces are equal |
State of equilibrium |
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Force in metric system |
Newtons |
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Result of action force at a distance from point of motion |
Moment |
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3 laws of Newton |
Inertia Acceleration Action-Reaction |
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Simple machine that consists of a rigid bar that rotates around an axis, or fulcrum |
Lever |
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Seesaw or balance scale Frequently used for maintaining posture or balance |
1st class lever |
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Wheelbarrow Provide a force advantage such that large weights can be supported or moved by a small force |
2nd class lever |
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-Most common in human anatomy - designed for producing spees of distal segment and for mpving a small weight a long distance |
3rd class lever |
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3 forces |
Axis A Weight W Moving/ holding force F |
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Ration between the length of the force arm and the length pf the weight arm |
Mechanical advantage |
