宿迁市2009年通高中必修科目水平第二次模拟测试物理(图片).doc

宿迁市2009年普通高中学业水平测试物理参考答案 一、选择题（每小题3分，共分…………（2分）m/s ……（1分） ⑵由 ……（2分） 得：m………（1分） 27．⑴物体沿斜面上滑过程中受力分析如图 N…（1分） …（1分） m/s2……………………………………（1分） ⑵对物体上滑过程根据动能定理列方程 …………（1分） ∴m/s ………………………………（1分） ⑶物体沿斜面上滑整个过程中摩擦力做功：J 物体沿斜面上滑又滑回底端的整个过程中应用动能定理 ……………………………………………………………（1分） ∴J ……………………………………………………………………（1分） 28．⑴小球到达B点：由……………………………………………………（1分） 得：……………………………………………………………………（1分）⑵设小球的释放点距A点高度为h 由机械能守恒定律，得： ………………………………（2分） 得：………………………………………………………………………（1分） ⑶小球落到C点时：由，得：tan 解得： ……………………………………（1分） 小球落到C点得速度大小： …………………………（1分） 小球落到C点时，速度与水平方向夹角为：tan …（1分） conferences, learned superiors policies; reports, you can learn to deal with problems, art, just wanted to learn, to learn at any time. To continuously expand the scope of the study. The complexity and comprehensiveness of our work, decided to not only do we want to be professionals, or if generalists, to dabble in different areas of knowledge. Mastery of knowledge not only to have knowledge to rational analysis. This on requirements we, not only to learning national of route, and approach, and policy, also to learning national of legal, and regulations; not only to with political theory armed mind, also to with economic theory guide work; not only to read history, also to read history; not only to absorption SM of mirror, also to gets is of road; not only to from local learn, also to to outside learn; not only to to books learn, also to field study learn. 　　Therefore, I would encourage you, and more to the outside world when I have time to take a look at, take a stroll, outside developments, learn other peoples development approach, and then come back to guide our work. Second, we must think. Learning without thought to overshadow, thinking without learning is perilous. We want to foster the character of advancing with the times, forge ahead, often reflect themselves in adapting to the new situation on whether there are delays, have anything to fear in the reform and innovation, whether in terms