利用“朗威Llongwill^(TM)”探究瞬时速度和平均速度的关系  

Exploring the relation between average speed and instantaneous speed using "Llongwill^(TM)"

作　　者：蔡春华[1,2] 

机构地区：[1]泽国中学,浙江温岭317523 [2]浙江师范大学数理学院,浙江金华321004

出　　处：《物理实验》2009年第5期25-27,共3页Physics Experimentation

摘　　要：利用"朗威LlongwillTM"和"I"型挡光片,测定气垫导轨上滑块的平均速度,探究平均速度和瞬时速度的关系.根据瞬时速度的内涵,利用图像法比较精确地求得物体的瞬时速度.Utilizing ＂Llongwill^TM＂ and ＂I＂ type light barrier, the average speed of a slide on air track is measured; the relation between average speed and instantaneous speed is explored. According to the connotation of instantaneous speed and making use of image-method, the instantaneous speed of an object is obtained, and the results of the experiment are analyzed.

关 键 词：朗威LlongwillTM 气垫导轨 平均速度 瞬时速度 

分 类 号：G633.7[文化科学—教育学]