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KIN > Biomechanics > Flashcards

Biomechanics Flashcards

1
Q

Inertia

A

The reluctance to change

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2
Q

Newtons 1st law

A

Inertia

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3
Q

Newtons 2nd law

A

Acceleration

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4
Q

Newtons 3rd law

A

Action reaction

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5
Q

How is inertia measured

A

By looking at how much matter (mass or weight) a body has

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6
Q

Center of mass

A

The balance point of a body - body’s mass is equally distributed in all directions

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7
Q

Velocity

A

If a body is at a constant state of motion (stillness or movement) - stillness = 0 velocity

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8
Q

Acceleration

A

Any change in velocity (negative, positive or zero)

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9
Q

Force

A

Any “cause” (push or pull) that produces change in the state of rest or motion (football)

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10
Q

4 kinds of motion

A

No motion, linear motion, rotational (angular) motion, motion to stationary

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11
Q

No motion

A

Stability or static, centre of mass must be over base (touching toes)

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12
Q

Linear motion

A

Forces pass directly through centre of mass

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13
Q

Rotational (angular) motion

A

Forces pass “off Center” (swinging on a bar)

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14
Q

Motion to stationary

A

Attenuate energy (running into a wall)

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15
Q

Human motion caused by

A

Forces (torque) = muscle contractions

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16
Q

General motion

A

Rotational movement of limbs causes linear movement of body

17
Q

Anatomical position

A

Standing, facing forward, arms at side, palms up, thumbs out

18
Q

Frontal plane

A

Divides the body into front & back halves - cuts at ears - linear movement of body = side lunge or side stepping - rotational movement = moving arms and legs side ways (cartwheel)

19
Q

Sagittarius planes

A

Divides body into side, down the midline - linear movement of body = walking, lunging forward & backward - rotational movement = moving head, arms, legs forward & backward (Flexion & extension) (summersault)

20
Q

Transverse plane

A

Cuts body into top & bottom - rotational movement = rotation of head, trunk, limbs (turning on the spot)

21
Q

Flexion

A

Reduces angle between joints

22
Q

Extension

A

Increases angle between joints

KIN (14 decks)

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