2011年郑州市第一次质量预测物理考试
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2011年九年级第一次质量预测
物理 参考答案及评分标准
一、填空题(每空l分，共18分)
1.力能改变物体的运动状态或力的作用是相互的 不变
2.1.665 ×104 6.75×104
3.动 重力势
4.甲 东(前) 70
5. 900 75% 增大斜面的倾斜程度或使斜面变得更光滑
6.冰壶具有惯性或冰壶具有动能
减少冰壶在运动过程中所受到的摩擦力(合理即可)
7.杠杆 360N
8.0 匀速直线运动二、选择题(每小题分，共24分)在每个小题的选项中，只有一个选项符合题目要求。
|9 |10 |11 |12 |13 |14 |15 |16 |
|B |A |C |C |D |C |A |D |三、作图题(每小题3分．共6分)
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