biomech #7 - sectional study design. It limited them from...

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Section 1 1. What did the researchers believe (hypothesize) the results of the study would be? That Varus knee alignment is associated with an increased risk for developing medial knee osteoarthritis 2. Did the results of the study support or reject their hypothesis? Explain. Mostly yes because the people that were studied showed a greater “ knee external adduction moments, knee adduction, and lateral ground reaction force” compared to the normally aligneded ones. This shows that the ones with varus knees show the “altered mechanics” that are usually seen in medical knee osteoarthritis. What were some limitations of the study? One limitation was the cross-
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Unformatted text preview: sectional study design. It limited them from being able to infer cause and effect. Section 2 1. A batter swings with a velocity of 2800/s. The distance between the axis of rotation and the end of the bat is 1.46 m. What is the linear velocity of the tip of the bat? 2. A tennis racket changes velocity from .3 rad/s to 17 rad/s in .6 seconds. What is the angular acceleration of the racket? 3. A golf club travels 400 in .13 seconds. What is the average angular velociy (in radians) of the golf club? 4. A cyclist rides his bike for 5 km. The wheels on the cyclist's bike have a diameter of 1.2 meters. How many times did the tire rotate during the ride?...
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