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此套题仅 Section I含有选择题,
共计时1小时30分钟,共40题
占总分50%
仅可使用铅笔答题
可以使用计算器
考试时会提供常用的公示表
完整版下载链接见文末
1)In which of the following situations is the kinetic energy of the object decreasing?
4)A stone of mass m is thrown upward at a 30° angle to the horizontal. At the instant the stone reaches its highest point, why is the stone neither gaining nor losing speed?
14)Some students want to calculate the work done by friction as an object with unknown mass moves along a straight line on a rough horizontal surface. The students have a force probe, a meterstick, and a stopwatch. Which of the following will allow the students to take the measurements needed to calculate the work done by friction?
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