biomech 4

biomech 4 - (2 points)A 100-kg running back runs with a...

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Section 1 1. (1 point) In 50 words or less, summarize the functional asymmetry hypothesis, as it relates to able-bodied gait? To show that gait asymmetries are functional in nature by showing that the vertical impulse would be greater for the non- dominant leg, increasing walking speeds would cause the propulsive impulse in the non-dominant leg to increase, and propulsive impulse will be greater for non-dominant leg. 2. (1 point) In 50 words or less, did the results of the study support the functional asymmetry hypothesis as it relates to able-bodied gait? Why or why not? Mostly not, at regular or slow walking speeds there was no significant difference for propulsive impulses. But at a fast speed there was a difference in propulsive impulse but not in the non-dominant leg, it was in the dominant. So the impulses were mostly symmetrical. Section 2 1.
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Unformatted text preview: (2 points)A 100-kg running back runs with a velocity of 6 m/s towards a stationary 95-kg defensive back. After the running back collides with the defensive back, what will be the new combined velocity assuming momentum is conserved and that it is an inelastic collision? 2. (2 points) A 92-kg receiver running at 8 m/s catches a pass across the middle and is immediately brought to a stop during a collision with a safety that lasts 0.6 seconds. How much force did the receiver experience? 3. (2 points)Beginning with a vertical velocity of zero, a high-jumper pushes off from the ground for 0.3 seconds and leaves the ground with a vertical velocity of 7 m/s. The jump caused a vertical ground reaction force of 1822.7 N. Based on your understanding of ground reaction forces, what is the mass(kg) of the jumper (round to nearest whole number)?...
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