The 2010 Winter Olympics, officially the XXI Olympic Winter Games or the 21st Winter Olympics, is a major international multi-sport event held on February 12–28, 2010, in Vancouver, British Columbia, Canada, with some events held in the resort town of Whistler, British Columbia and in the Vancouver suburbs of Richmond, West Vancouver and the University Endowment Lands. Both the Olympic and Paralympic Games are being organized by the Vancouver Organizing Committee (VANOC). The 2010 Winter Olympics are the third Olympics hosted by Canada, and the first by the province of British Columbia. Previously, Canada was home to the 1976 Summer Olympics in Montreal, Quebec and the 1988 Winter Olympics in Calgary, Alberta.
Following Olympic tradition, then Vancouver mayor Sam Sullivan received the Olympic flag during the closing ceremony of the 2006 Winter Olympics in Turin, Italy. The flag was raised on February 28, 2006, in a special ceremony, and was on display at Vancouver City Hall until the Olympic opening ceremony. The event was officially opened by Governor General Michaëlle Jean.[2]

（1）在滑行的过程中，冰刀在冰面表面滑动，故它们之间的摩擦是滑动摩擦；
（2）由于任何物体在任何情况下都具有惯性，所以运动员冲到终点不能马上停下来；
（3）平均速度为v=

s

t

=

500m

43s

=11.63m/s；
故答案为：（1）滑动；（2）惯性；（3）11.63．

来自44个国家和地区的2366名运动员参加了哈尔滨世界大学生冬季运动会。2009年哈尔滨世界大学生冬季运动会（英语：2009 Harbin Winter Universiade）暨第24届世界大学生冬季运动会于2009年2月18日至2月28日在黑龙江省哈尔滨市举行，来自44个国家和地区的2366名运动员参加了哈尔滨世界大学生冬季运动会。哈尔滨大冬会是即2001年北京世界大学生夏季运动会后第二次举办世界大会，这也是首次举办世界级冬季综合性运动会。