Kinesiology: Biomechanics

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Basic Principles of physics explained

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15 Terms

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<p>When defining levers, A means</p>

When defining levers, A means

Axis

<p>Axis</p>
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When defining levers, F means

Force

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Force

the amount and direction of push or pull applied

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Push

creates compression

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pull

creates traction

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Internal forces

muscle contraction, ligamentous restraint

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external forces

gravity, any externally applied resistance

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Gravitational force

is the force exerted on an object or person by gravity.

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Gravity

mutual attraction between the earth and an object

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Weight

is the result of a gravitational force and the mass of an object and always pushed directly downward.

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Ground reaction force

the upward force a supporting surface exerts when an object pushes downward on the supporting surface.

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Friction:

force between two surfaces that increased resistance to motion of one surface across another

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Friction is __________ by compression

increased

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Friction is __________ by traction

decreased

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Different kinds of forces