Biomechanics #1

Completing the downward movement in a squat would include the following anatomical joint movements

• flexion of the hip, flexion of the knees, plantarflexion of the ankles

• rotation of the hip, flexion of the knees, dorsiflexion of the ankles

• flexion of the hip, flexion of the knees, dorsiflexion of the ankles

• flexion of the hip, extension of the back, adduction of the shoulder, dorsiflexion of the ankles

In the long jump take-off, an athlete drives their knee upwards as seen in the image. How does this knee drive contribute to a bigger jump through the application of Newton's 3rd law?

Which of the batters performing a 'drive' has the best stability?

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Adjusting the height of release in a basketball free throw will change

• only the optimal speed of release 

• only the optimal angle of release

• both the optimal speed and angle of release

• none of the above

What class lever is shown in this image?

• 1st class lever

• 2nd class lever

• 3rd class lever

• 4th class lever

What type of motion does the ball have as it is pitched toward the batter if it travels with no spin?

• Linear motion

• Curvilinear motion

• Angular motion

• General motion - combination of linear and angular motion

Isotonic contractions occur when the muscle fibres lengthen or shorten when they produce force. Which type of isotonic contraction occurs when the muscle fibres shorten?

• Concentric contraction

• Eccentric contraction

Abduction is

• movement of a body part toward the midline

• movement of a body part towards the proximal end

• movement of a body part away from the midline

• none of the above

The magnus effect is the result of

• spin on projectile

• bernoulli's principle

• a rolling ball

• forces acting on a projectile

• a

What anatomical joint movement bends the foot towards the shin?