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2015年新课标Ⅰ卷理综物理力学实验题,大胆创新,突破约束,值得点赞。例如,测量玩具小车通过凹形桥最低点时的速度,突破考试大纲规定的实验;用压力式托盘秤测量小车对凹形桥的压力,突破考试大纲规定的器材;用圆周运动向心力的公式测量速度,突破测量速度常规的方法。【原题22.(6分)】某物理小组的同学设计了一个粗测玩具小车通过凹形桥最低点时的速度的实验。所用器材有:玩具小车、压力式托盘秤、凹形桥模
2015 New Curriculum Ⅰ volume rationale for comprehensive physical and mechanical experiments, bold innovation, breaking the constraints, it is worth praising. For example, measuring the speed of a toy car passing through the lowest point of a concave bridge, breaking the test specified in the test outline; measuring the pressure of the car on the concave bridge with a pressure pallet scale, breaking through the equipment specified in the test outline; measuring with a centripetal force of circular motion Speed, break the conventional method of measuring speed. [Original title 22. (6 points)] A physics group of students designed a rough test car when the lowest point of the concave bridge speed experiment. Equipment used are: toys car, pressure pallet scales, concave bridge mode