American Bode Miller inspired a question about terminal velocity, resistance, and friction with his skiing in Sochi. It's one of many technical questions that came up during the Winter Olympics. Olivier Morin/AFP/Getty Images hide caption

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Speedskaters from the U.S., Brian Hansen (from left), Jonathan Kuck and Joey Mantia, compete in the team pursuit speedskating race for seventh place at the Adler Arena Skating Center on Saturday. Patrick Semansky/AP hide caption

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Germany's Evi Sachenbacher-Stehle has left her country's Olympic contingent — and Sochi — after testing positive for a banned stimulant. She's seen here in the biathlon earlier this week; Sachenbacher-Stehle finished fourth. Odd Andersen/AFP/Getty Images hide caption

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From left to right, America's J.R. Celski, Jordan Malone, Christopher Creveling and Eduardo Alvarez celebrate taking silver in the men's short track 5,000-meter relay at the Iceberg Skating Palace in the Sochi Winter Olympics Friday. Yuri Kadobnov/AFP/Getty Images hide caption

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Canada's Jamie Benn (right) and Corey Perry celebrate a goal against America and goalie Jonathan Quick during the men's hockey semifinals in Sochi Friday. Alexander Nemenov/AFP/Getty Images hide caption

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Russia's Adelina Sotnikova (center) celebrates after receiving her gold medal in women's figure skating Thursday. South Korea's Yuna Kim (left) took silver, and Italy's Carolina Kostner won bronze. Antonin Thuillier/AFP/Getty Images hide caption

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As members of the punk protest group Pussy Riot recorded a song and video in Sochi this week, a uniformed Cossack used a whip to try to stop them. The attack ended up being part of the band's video. Morry Gash/AP hide caption

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U.S. silver medalists Elana Meyers, left, and Lauryn Williams pose after their final run in the women's bobsled Wednesday. Williams becomes only the second American in history to win medals in both the Summer and Winter Olympics. Alex Livesey/Getty Images hide caption

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As of late Tuesday, with the final stretch of the Sochi Winter Games ahead, Germany had collected more gold medals than any other nation. Here, German gold medalists Severin Freund, Andreas Wellinger, Andreas Wank and Marinus Kraus celebrate their win in Team Ski Jumping. Paul Gilham/Getty Images hide caption

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U.S. skater Jessica Smith, in black, is among the Americans who have been kept off the podium in Sochi despite strong performances leading up to the Winter Games. Smith's private coach is Jae Su Chun, who is under a two-year suspension from the International Skating Union. Damien Meyer/AFP/Getty Images hide caption

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Noelle Pikus-Pace celebrates with friends and family, including her children, Traycen, left, and Lacee, after winning a silver medal in the women's skeleton at the 2014 Winter Olympics. Michael Sohn/AP hide caption

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Peter Frenette of the United States jumps during training for the Men's Normal Hill Individual ahead of the start of the Sochi Games. Lars Baron/Getty Images hide caption

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Evgeni Plushenko of Russia withdrew from the Sochi Olympics on Thursday, reportedly because of a recurring problem with his back. Ivan Sekretarev/AP hide caption

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