MVS 330 lab 3

# MVS 330 lab 3 - Megan Gueli 11638200 MVS 330 Lab#3 Ground...

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Megan Gueli 11638200 MVS 330 Lab #3: Ground Reaction Force (Part II) Friday, October 7, 2011

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Questions (Questions for Part 1) 1) How do the maximum jump height results from the two methods (impulse- momentum and time in the air) compare? What things, other than human error or equipment error, might affect the accuracy of each method (Hint: Recall the assumptions made in each method)? Which method do you think is more accurate, and why? The results from the two methods on finding maximum jump height vary significantly. There are several possibilities that could have affected the calculations. One is that gravity alone is acting on the acceleration .We did not calculate for any air resistance or friction. Also, we estimated the mass of the subject without actually measuring it by itself. Finally we assumed that the max height was reached occurred at the half-way point of the total time. 2) Do the maximum jump heights differ depending on the style used (countermovement, use of arms etc.)? What differences do you observe in the GRF between the three jump styles? The maximum jump heights do differ with the different styles used. Firstly, jump one has a sharp peak with a steep slope going up and going down. It reaches a max height of .306m. Next jump two also has a steep slope upwards, but initially has a more gradual slope going down, followed by a steep slope. It reaches a max height of .
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MVS 330 lab 3 - Megan Gueli 11638200 MVS 330 Lab#3 Ground...

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