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Biomechanics > Final Exam > Flashcards

Final Exam Flashcards

1
Q

Rectilinear motion

A

Motion in a straight line

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2
Q

Curvilinear motion

A

Motion in a curved line

Ex. curve ball

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3
Q

Distance SI units

A

m

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4
Q

Displacement SI units

A

m

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5
Q

Speed SI units

A

m/s

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6
Q

Velocity SI units

A

m/s

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7
Q

Acceleration SI units

A

m/s^2

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8
Q

Is bone stronger against fast or slow loading rates?

A

Stronger against faster loads

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9
Q

3 types of cartilage:

A
  • Articular
  • Fibrocartilage
  • Elastic
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10
Q

What is the function of the ACL, and how is it most commonly injured?

A

Cutting, sudden deceleration, valgus force, hyperextension

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11
Q

What is the function of the ACL, and how is it most commonly injured?

A

Cutting, sudden deceleration, valgus force, hyperextension

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12
Q

Why is it beneficial to impart backspin to the golf ball in a golf drive off the tee?

A

Magnus effect causes change in pressure on one side of the ball → lift effect.
Backspin on the ball causes it to rise, increasing the displacement

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13
Q

Why do swimmers shave their bodies?

A

To reduce surface drag

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14
Q

What is the purpose of drafting in bicycle racing?

A

Reduce cross-sectional area & turbulent flow → decreasing form drag

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15
Q

What drag force is reduced by the presence of dimples on a golf ball?

A

Dimples decrease the surface area, reducing form drag

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16
Q

Which can withstand greater tensile stress- bone or ligament?

A

Ligament

17
Q

What type of stress is bone strongest in resisting? What type of stress is bone weakest in resisting?

A

Compression force is the strongest

Shear forces is the weakest

18
Q

If a lateral force (valgus force) is applied to the knee, a bending load is placed on the lower extremity. Which side of the knee undergoes compressive stress and which side undergoes tensile stress?

A

The medial side would undergo tensile force

The lateral side would undergo compression force

Biomechanics (6 decks)

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