(9分) 如图所示,轻弹簧下悬重物。与之间用轻绳连接。剪断、间的轻绳,经较短时间 发布时间:2017-04-15 21:38 │ 来源:www.tikuol.com 题型:计算题 问题: (9分) 如图所示,轻弹簧下悬重物。与之间用轻绳连接。剪断、间的轻绳,经较短时间有速度,有速度大小为v,求这段时间内弹力的冲量及弹力的平均值。
题型:计算题 选择合适选项补全对话。A. And that one is better than this one. B. Thank you! C. Hello , Zhou Li! D. They are my pictures. E. They are worse than these two.Li Yang : 1._____ _ Zhou Li: Hi, Li Yang!Li Yang: What are they?Zhou Li: 2._ _ I have got four pictures.Li Yang: Look! This picture is good. .Zhou Li: Yes! 3. Li Yang: What about the other two picturesZhou Li: 4.______ Li Yang: But I think they are very good.Zhou Li: 5. 查看答案