Recent Changes

Monday, June 14

  1. page FreeskiingJumps edited ... {Gus_K_dub_cork_12_video.jpg} --------------------------------------------------------------…
    ...
    {Gus_K_dub_cork_12_video.jpg}
    --------------------------------------------------------------------------------------------------------------------------------
    Chart of results:
    Trick
    Jump Type and Size
    Speed (m/s)
    Degrees
    Nick Martini straight air
    65 foot step down
    18 meters/second

    180
    10 foot table top
    10.3 meters/second

    360
    10 foot table top
    10.3 meters/second
    0º, 5º
    540
    35 / 40 foot table top
    12.867 meters/second
    0º, 20º/25º
    Ben Moxham flat 360
    35 / 40 foot step down
    12.857 meters/seconds
    0º, 5 º
    Ben Moxham flat 540
    35 / 40 foot step down
    12. 761 meters/second
    0º, 2 º, 0º, 10º
    Mike Mertion flat 540
    40 / 50 foot step down
    17.1 meters/second
    0º, 20º
    Sean Jordan rodeo 540
    35 / 40 foot step down
    12.667 meters/second
    0º, 2º, 0º, 10º
    Mike Mertion switch 720
    40 / 50 foot step down
    19.884 meters/second
    0º, 30º
    Ben Moxham switch cork 720
    30 / 35 foot table top
    17.1 meters/second
    0 º, 35 º
    Mike Mertion 900
    35 foot table top
    12.857 meters/second
    0º, 30º, 0º, 40º
    Nick Martini cork 900
    35 / 40 foot table top
    12.761 meters/second
    0º, 2º, 0º, 55º
    Ben Moxham cork 900
    55 / 60 foot table top
    25.91 meters/second
    0º, 15º, 0º, 45º
    Mike Mertion flat 900
    40 / 50 foot step down
    17.1 meters/second
    0º, 10º, 0º, 35º
    Nick Martini switch 1080
    65 foot table top
    17.1 meters/second
    0º, 55º
    Gus Kenworthy switch 1080
    45 foot step down
    17.1 seconds
    0º,15º, 55/60º
    Gus Kenworthy switch double flat 720
    45 foot step down
    17.1 meters/second
    0º, 15º,0º, 50º
    Gus Kenworthy double falt 900
    45 foot step down
    17.1 meters/second
    0º, 20º, 0º, 30º
    Ben Moxham double flat 900
    60 / 65 foot table top
    17.1 meters/second
    0º, 15º, 0º, 35º
    Ben Moxham double cork 1080
    55 / 60 feet
    26.719 meters/second
    0º, 35º, 0º, 45º
    Mike Mertion double flat 1080
    60 foot table top
    25.91 meters/second
    0º, 35º, 0º, 50º
    Gus Kenworthy double cork 1260
    45 foot step down
    17.1 meters/second
    0º, 20º, 0º, 55º/60º

    I provided pictures from the video I analyzed because most of them show the skier before they hit the jump. You can see arms extended and their body at an angle. This is because they are getting ready to complete a spesific trick and this is exactly what I am measuring (when they are center and at zero degrees to the angle that they wind up their body, then back to zero, to the angle that they are at right before leaving the jump).
    The blue dots represent the fact that the camera pans and I had to plot points in order to counteract this so I could achieve a value for the skier's speed. The red dots represent the the skier's speed. For both the blue and red dots, I had to click on a fixed point that would stay constant throughout the video clip. This was easy for the blue dots because I chose a target such as the lip of the jump. However, this was a more difficult for determining the skier's speed because the skier is moving and their whole body is also slightly changing position. This definitely could have had an effect on my results.
    (view changes)
    9:14 pm
  2. page FreeskiingJumps edited ... ----------------------------------------------------------------------------------------------…
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch 1080 data
    ...
    45 foot table topstep down
    0º,15º, 55/60º
    1.436 seconds - 2.336 seconds = .1 seconds
    ...
    -------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch double flat 720 data
    ...
    45 foot table topstep down
    0º, 15º,0º, 50º
    1.601 seconds - 1.501 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy double falt 900 data
    ...
    45 foot table topstep down
    0º, 20º, 0º, 30º
    1.601 seconds - 1.501 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy double cork 1260 data
    ...
    45 foot table topstep down
    0º, 20º, 0º, 55º/60º
    2.603 seconds - 2.503 seconds = .1 seconds
    (view changes)
    7:58 pm
  3. page FreeskiingJumps edited ... Experiment/Data/Analysis Nick Martini straight air ... size: 65 / 70 foot step 0º 1.6 …
    ...
    Experiment/Data/Analysis
    Nick Martini straight air
    ...
    size: 65 / 70 foot step

    1.6 seconds - 1.505 seconds = .095 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    540 data
    Jump size: 35 / 40 foot table top
    0º, 20º/25º
    1.873 seconds - 1.74 seconds = .133 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Ben Moxham flat 360 data
    ...
    40 foot table topstep down
    0º, 5 º
    11.978 seconds - 11.845 seconds = .133 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Ben Moxham flat 540 data
    ...
    size: 35 / 40 foot step
    0º, 2 º, 0º, 10º
    8.910 seconds – 8.776 seconds = .134 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Sean Jordan rodeo 540 data
    ...
    size: 35 / 40 foot step
    0º, 2º, 0º, 10º
    12.046 seconds - 11.911 seconds = .135 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Ben Moxham switch cork 720 data
    ...
    / 35 feetfoot table top
    0 º, 35 º
    15.583 seconds – 15.483 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Mike Mertion 900 data
    Jump size: 35 foot table top
    0º, 30º, 0º, 40º
    8.408 seconds - 8.275 seconds = .133 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Nick Martini cork 900 data
    Jump size: 35 / 40 foot table
    0º, 2º, 0º, 55º
    2.275 seconds - 2.141 seconds = .134 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Nick Martini switch 1080 data
    ...
    jump: 65 / 70 foot table
    0º, 55º
    3.913 seconds - 3.813 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch 1080 data
    Jump size: 45 foot table top
    0º,15º, 55/60º
    1.436 seconds - 2.336 seconds = .1 seconds
    ...
    -------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch double flat 720 data
    Jump size: 45 foot table top
    0º, 15º,0º, 50º
    1.601 seconds - 1.501 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy double falt 900 data
    Jump size: 45 foot table top
    0º, 20º, 0º, 30º
    1.601 seconds - 1.501 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Ben Moxham double flat 900 data
    Jump size: 5060 / 55 feet65 foot table top
    0º, 15º, 0º, 35º
    4.438 seconds – 4.338 seconds = .1 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Mike Mertion double flat 1080 data
    ...
    size: 60 feetfoot table top
    0º, 35º, 0º, 50º
    22.656 seconds - 22.590 seconds = .066 seconds
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy double cork 1260 data
    Jump size: 3545 foot step downtable top
    0º, 20º, 0º, 55º/60º
    2.603 seconds - 2.503 seconds = .1 seconds
    (view changes)
    7:57 pm
  4. page FreeskiingJumps edited ... 6 pictures at the very top of this page were all found on newschoolers.com Here are the video…
    ...
    6 pictures at the very top of this page were all found on newschoolers.com
    Here are the videos that I used to analyze and pull my data from for this exploration:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video:
    The tricks that I initially took from this video: 180
    The tricks that I initially took from this video: 360

    Acknowledgments
    Thank you Dr. Pasquini for all of your help and support! I really appreciate it.
    (view changes)
    7:49 pm
  5. page FreeskiingJumps edited ... Summary and results: I basically took measurements of the skier's speed and looked at my resu…
    ...
    Summary and results:
    I basically took measurements of the skier's speed and looked at my results in relation to the size of a jump and the type of trick a skier was trying to complete. Certain tricks do not require as much force as others. While my prediction stated that the more difficult the trick, the more a skier will have to "throw their body," this didn't exactly hold entirely true. I forgot when I made my initial prediction, that rotations on a horizontal and vertical axis are much different. This affects how hard a skier must "throw their body." However, I was correct that in the larger the jump, the more speed you will need to clear the knuckle. I found that a skier doesn't always need a ton of speed to complete a spesific trick. A skier can complete spesific tricks based on jump size and this is also something that I knew but forgot to take note of. The larger the jump, the more possibilities a skier has as far as tricks are concerned.
    ConclusiozThereConclusion
    There
    were a
    ...
    have been imporvedimproved upon in
    ...
    they are popingpopping and beginning
    ...
    also cause innacuracyinaccuracy in the angle measurements. MyAnd one last thing, I tried my best to get shots that were not in slow motion but I feel like there were a few that were just slightly slowed down (it was hard for me to even tell) so this would definitely alter my values.
    My
    ultimate goal
    ...
    out how spesificspecific tricks are
    ...
    into consideration.
    Overall, this project had a lot of glitches in it and my results weren't very accurate. I basically had to estimate every single value (degrees, the size of the skis in cm but converted to meters, the skier's speed in meters per second, and even the size of the jumps). I think I essentially took on too much and expected exact values. However, I am happy with my project and I did enjoy working on it. While it doesn't seem too complicated, it was very challenging and I did learn a good amount from it.

    Sources
    6 pictures at the very top of this page were all found on newschoolers.com
    (view changes)
    7:47 pm
  6. page FreeskiingJumps edited ... Summary and results: I basically took measurements of the skier's speed and looked at my resu…
    ...
    Summary and results:
    I basically took measurements of the skier's speed and looked at my results in relation to the size of a jump and the type of trick a skier was trying to complete. Certain tricks do not require as much force as others. While my prediction stated that the more difficult the trick, the more a skier will have to "throw their body," this didn't exactly hold entirely true. I forgot when I made my initial prediction, that rotations on a horizontal and vertical axis are much different. This affects how hard a skier must "throw their body." However, I was correct that in the larger the jump, the more speed you will need to clear the knuckle. I found that a skier doesn't always need a ton of speed to complete a spesific trick. A skier can complete spesific tricks based on jump size and this is also something that I knew but forgot to take note of. The larger the jump, the more possibilities a skier has as far as tricks are concerned.
    What was the result of your investigation?
    Conclusion
    What new questions have you raised? Why is your result important?
    There
    ConclusiozThere were a
    ...
    angle measurements.
    My
    My ultimate goal
    Sources
    6 pictures at the very top of this page were all found on newschoolers.com
    (view changes)
    7:42 pm
  7. page FreeskiingJumps edited ... 1.6 seconds - 1.505 seconds = .095 seconds 1.71 meters / .095 seconds = 18 meters/second An…
    ...
    1.6 seconds - 1.505 seconds = .095 seconds
    1.71 meters / .095 seconds = 18 meters/second
    Analysis of data:
    {Straight_Air_video.jpg}
    --------------------------------------------------------------------------------------------------------------------------------
    ...
    4.641 seconds - 4.475 seconds = .166 seconds
    1.71 meters / .166 seconds = 10.3 meters/second
    Analysis of data:
    {180.jpg}
    {180_video.jpg}
    ...
    31.626 seconds - 31.460 seconds = .166 seconds
    1.71 meters / .166 seconds = 10.3 meters/second
    Analysis of data:
    {360.jpg}
    {360_video.jpg}
    ...
    1.873 seconds - 1.74 seconds = .133 seconds
    1.71 meters / 1.33 seconds = 12.867 meters/second
    Analysis of data:
    {Stept_nose_540.jpg}
    {Stept_nose_540_video.jpg}
    ...
    11.978 seconds - 11.845 seconds = .133 seconds
    1.71 meters / .133 seconds = 12.857 meters/seconds
    Analysis of data:
    {B_Mox_flat_3_pos_vs_vel_graph.jpg}
    {B_Mox_flat_3_video.jpg}
    ...
    8.910 seconds – 8.776 seconds = .134 seconds
    1.71 meters / .134 = 12. 761 meters/second
    Analysis of data:
    {B_Mox_flat_5_pos_vs_vel_graph.jpg}
    {B_Mox_flat_5_video.jpg}
    ...
    4.771 seconds - 4.671 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Mike_M_flat_5_pos_vs_vel.jpg}
    {Mike_M_flat_5_video.jpg}
    ...
    12.046 seconds - 11.911 seconds = .135 seconds
    1.71 meters / .135 seconds = 12.667 meters/second
    Analysis of data:
    {Sean_Jordan_rodeo_5_pos_vs_vel_graph.jpg}
    {Sean_Jordan_rodeo_5_video.jpg}
    ...
    12.031 seconds - 11.945 seconds = .086 seconds
    1.71 meters / .086 seconds = 19.884 meters/second
    Analysis of data
    {Mike_M_sw_7.jpg}
    {Mike_M_sw_7_video.jpg}
    ...
    15.583 seconds – 15.483 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {B_Mox_sw_flat_7_pos_vs_vel_graph.jpg}
    {B_Mox_sw_flat_7_video.jpg}
    ...
    8.408 seconds - 8.275 seconds = .133 seconds
    1.71 meters / .133 seconds = 12.857 meters/second
    Analysis of data:
    {Mike_M_tail_9.jpg}
    {Mike_M_tail_9_video_1.jpg}
    ...
    2.275 seconds - 2.141 seconds = .134 seconds
    1.71 meters / .134 seconds = 12.761 meters/second
    Analysis of data:
    {Nick_Martini_cork_9.jpg}
    {Nick_Martini_cork_9_video.jpg}
    ...
    24.391 seconds – 24.325 seconds = .066 seconds
    1.71 meters / .066 seconds = 25.91 meters/second
    Analysis of data:
    {B_Mox_dub_cork_9_pos_vs_vel_graph.jpg}
    {B_Mox_dub_cork_9_video.jpg}
    ...
    15.516 seconds – 15.416 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Mike_M_flat_9_pos_vs_vel_graph.jpg}
    {Mike_M_flat_9_video_1.jpg}
    ...
    3.913 seconds - 3.813 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Nick_Martini_10_tail.jpg}
    {Nick_Martini_10_tail_video.jpg}
    ...
    1.436 seconds - 2.336 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 seconds
    Analysis of data:
    {Gus_K_sw_tail_10.jpg}
    {Gus_K_sw_tail_10_video_1.jpg}
    ...
    1.601 seconds - 1.501 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Gus_K_sw_dub_flat_7.jpg}
    {Gus_K_sw_dub_flat_7_video.jpg}
    ...
    1.601 seconds - 1.501 seconds = .1 seconds
    1.7 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Gus_K_dub_flat_9.jpg}
    {Gus_K_dub_flat_9_video.jpg}
    ...
    4.438 seconds – 4.338 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {B_Mox_dub_flat_9_pos_vs_vel_graph.jpg}
    {B_Mox_dub_flat_9_video.jpg}
    ...
    .799 seconds - .735 seconds = .064 seconds
    1.71 meters / .064 seconds = 26.719 meters/second
    Analysis of data:
    {B_Mox_dub_cork_10_pos_vs_vel_graph.jpg}
    {B_Mox_dub_cork_10_video.jpg}
    ...
    22.656 seconds - 22.590 seconds = .066 seconds
    1.71 meters / .066 seconds = 25.91 meters/second
    Analysis of data:
    {Mike_M_dub_flat_10_pos_vs_vel_graph.jpg}
    {Mike_M_dub_flat_10_video.jpg}
    ...
    2.603 seconds - 2.503 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second
    Analysis of data:
    {Gus_K_dub_cork_12.jpg}
    {Gus_K_dub_cork_12_video.jpg}
    (view changes)
    7:41 pm
  8. page FreeskiingJumps edited ... I provided pictures from the video I analyzed because most of them show the skier before they …
    ...
    I provided pictures from the video I analyzed because most of them show the skier before they hit the jump. You can see arms extended and their body at an angle. This is because they are getting ready to complete a spesific trick and this is exactly what I am measuring (when they are center and at zero degrees to the angle that they wind up their body, then back to zero, to the angle that they are at right before leaving the jump).
    The blue dots represent the fact that the camera pans and I had to plot points in order to counteract this so I could achieve a value for the skier's speed. The red dots represent the the skier's speed. For both the blue and red dots, I had to click on a fixed point that would stay constant throughout the video clip. This was easy for the blue dots because I chose a target such as the lip of the jump. However, this was a more difficult for determining the skier's speed because the skier is moving and their whole body is also slightly changing position. This definitely could have had an effect on my results.
    Summary and results:
    I basically took measurements of the skier's speed and looked at my results in relation to the size of a jump and the type of trick a skier was trying to complete. Certain tricks do not require as much force as others. While my prediction stated that the more difficult the trick, the more a skier will have to "throw their body," this didn't exactly hold entirely true. I forgot when I made my initial prediction, that rotations on a horizontal and vertical axis are much different. This affects how hard a skier must "throw their body." However, I was correct that in the larger the jump, the more speed you will need to clear the knuckle. I found that a skier doesn't always need a ton of speed to complete a spesific trick. A skier can complete spesific tricks based on jump size and this is also something that I knew but forgot to take note of. The larger the jump, the more possibilities a skier has as far as tricks are concerned.

    What was the result of your investigation?
    Conclusion
    (view changes)
    7:37 pm
  9. page FreeskiingJumps edited ... Nick Martini cork 900 data Jump size: foot table top 0º, 2º, 0º, 55º 2.275 seconds - 2.141…
    ...
    Nick Martini cork 900 data
    Jump size: foot table top
    0º, 2º, 0º, 55º
    2.275 seconds - 2.141 seconds = .134 seconds
    1.71 meters / .134 seconds = 12.761 meters/second

    Analysis of data:
    {Nick_Martini_cork_9.jpg}
    ...
    {Mike_M_flat_9_video_2.jpg}
    --------------------------------------------------------------------------------------------------------------------------------
    Nick Martini switch 1080 data
    Size of jump: 65 / 70 foot table top
    0º, 55º
    3.913 seconds - 3.813 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second

    Analysis of data:
    {Nick_Martini_10_tail.jpg}
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch 1080 data
    Jump size:
    0º,15º, 55/60º
    1.436 seconds - 2.336 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 seconds

    Analysis of data:
    {Gus_K_sw_tail_10.jpg}
    ...
    -------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy switch double flat 720 data
    Jump size:
    0º, 15º,0º, 50º
    1.601 seconds - 1.501 seconds = .1 seconds
    1.71 meters / .1 seconds = 17.1 meters/second

    Analysis of data:
    {Gus_K_sw_dub_flat_7.jpg}
    ...
    --------------------------------------------------------------------------------------------------------------------------------
    Gus Kenworthy double falt 900 data
    0º, 20º, 0º, 30º
    1.601 seconds - 1.501 seconds = .1 seconds
    1.7 meters / .1 seconds = 17.1 meters/second

    Analysis of data:
    {Gus_K_dub_flat_9.jpg}
    (view changes)
    7:31 pm
  10. page FreeskiingJumps edited ... Jump size: 65 / 70 foot step down 0º 1.6 seconds - 1.505 seconds = .095 seconds 1.71 meter…
    ...
    Jump size: 65 / 70 foot step down

    1.6 seconds - 1.505 seconds = .095 seconds
    1.71 meters / .095 seconds = 18 meters/second

    Analysis of data:
    {Straight_Air_video.jpg}
    (view changes)
    7:15 pm

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