Motion Studies; Ski Racing; Anchorage, 2017
Newton's three laws of motion apply directly to ski racing, where success and even survival are governed by these physical principles.
Ski racers are good examples of Newtonian "bodies in motion." They use muscle power in attempting to harness or manage gravity and aerodynamic and surface drag. Here are several examples. The first is a merged sequence of a young racer (Hannah Kragt) from a training session in late 2016. All five images in the sequence were captured at high shutter speeds.
The second, of a U-19 junior (Adam Ostberg) starting and dynamically loading his skis (human inputs), was also taken at fast shutter speeds to show the forces he was applying to his skis in the start gate.
Like the Ostberg photo, the others were taken December 29, 2017 during giant slalom training on Alyeska's Race Trail. They were taken at slow shutter speeds to give greater appreciation for the velocities reached even in non-race conditions (racers not stripped down to race suits and skis probably not optimally waxed) early in the season.
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Jeff
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After a lifetime of mainly expressing myself with words, my postings here will mainly rely on images. They will speak for themselves to some extent, but I'll usually add a few comments of explanation. I've taken photographs for decades, since the 1950's, inspired in part by my father's photographic skill. Four years of photo assignments and quality darkroom time eventually gave way to decades of casual and family picture-taking. I re-immersed myself when I left film and turned to digital.