您所在的当前位置：高中物理试题 >

动量定理

> 一个力作用在A物体上，在ts时间内．速度增量为6m/s，这个力作用在B物体上时，在ts内速度增量为9m/s，若把A、B两物体连在一起，再用此力作用ts，则整体速度的增量为（　　） A．15m/s B．0.28m/s C．3.6m/s D．3.0m/s

问题：

发布时间：2024-09-13

一个力作用在A物体上，在ts时间内．速度增量为6m/s，这个力作用在B物体上时，在ts内速度增量为9m/s，若把A、B两物体连在一起，再用此力作用ts，则整体速度的增量为（　　）

A．15m/s B．0.28m/s C．3.6m/s D．3.0m/s

参考答案：

提问用户：ON***pqz

可能感兴趣的题目：

1 I support your decision, but I should also make it clear that I am not going to be to carry it out. A．connected B．fastened C．bound D．stuck
2 设同步卫星离地心的距离为 r，运行速率为 v 1，加速度为 a 1；地球赤道上的物体随地球自转的向心加速度为 a 2，第一宇宙速度为 v 2，地球的半径为 R，则下列比值正确的是（） A．= B．= C．= D．=
3 下列四组少数民族，其人口均在500万以上的一组是 A.朝鲜族和藏族 B.高山族和白族 C.苗族和土家族 D.回族和哈萨克族
4 图是“我国新疆棉花种植分布示意图”读图完成下列各题。小题1:新疆是我国重要的长绒棉产区，关于新疆棉产区优势区位条件的叙述，正确的是 A．种植历史悠久，技术水平高，交通便利 B．温带季风气候，水热组合好，土壤肥沃 C．冬季受西风影响，温和多雨 D．光热条件好，绿洲地区灌溉水源有保证小题2:新疆被誉为“瓜果之乡”，长江三角洲是著名的“鱼米之乡”，形成这种地域差异的主导因素是 A．气候 B．土壤 C．交通 D．科技
5 完形填空。 One afternoon I was sitting at my favorite table in a restaurant, waiting for the food I had ordered to arrive. Suddenly I 1 that a man sitting at a table near the window kept glancing in my direction, 2 he knew me. The man had a newspaper 3 in front of him, which he was 4 to read, but I could 5 that he was keeping an eye on me. when the waiter brought my 6 the man was clearly puzzled (困惑) by the 7 way in which the waiter and I 8 each other. He seemed even more puzzled as 9 went on and it became 10 that all the waiters in the restaurant knew me. Finally he got up and went into the 11 . When he came out, he paid his bill and 12 without another glance in my direction. I called the owner of the restaurant and asked what the man had 13 . "Well," he said,"that man was a detective (侦探). He 14 you here because he though you were the man he 15 ." "What?" I said, showing my 16 . The owner continued,"He came into the kitchen and showed me a photo of the wanted man. I 17 say he looked very much like you! Of course, since we know you, we told him that he had made a 18 ." "Well, it@^@^@s really 19 I came to a restaurant where I@^@^@m known," I said." 20 , I might have been in trouble." ( )1. A. knew ( )2. A. since ( )3. A. flat ( )4. A. hoping ( )5. A. see ( )6. A. menu ( )7. A. direct ( )8. A. chatted with ( )9. A. the waiter ( )10. A. true ( )11. A. restaurant ( )12. A. left ( )13. A. wanted ( )14. A. met ( )15. A. was to beat ( )16. A. care ( )17. A. must ( )18. A. discovery ( )19. A. a pity ( )20. A. Thus B. understood B. even if B. open B. thinking B. find B. bill B. familiar B. looked at B. time B. hopeful B. washroom B. acted B. tried B. caught B. was dealing with B. surprise B. can B. mistake B. natural B. However C. noticed C. though C. cut C. pretending C. guess C. paper C. strange C. laughed at C. I C. clear C. office C. sat down C. ordered C. followed C. was to meet C. worry C. need C. decision C. a chance C. Otherwise D. recognized D. as if D. fixed D. continuing D. learn D. food D. funny D. talked about D. the dinner D. possible D. kitchen D. calmed down D. wished D. discovered D. was looking for D. regret D. may D. fortune D. lucky D. Therefore
6 画出求1到200中既能被5整除，又能被7整除的所有奇数的程序框图．
7 阅读如图所示的程序框图，运行相应的程序，如果输入某个正整数n后，输出的S∈（10，20），那么n的值为（　　） A．3 B．4 C．5 D．6
8 甲、乙、丙三种溶液中各含一种卤离子，往甲中加入淀粉和氯水，溶液变为蓝色，再往丙中加入淀粉和氯水，颜色无明显变化，则甲、乙、丙依次含有 A．Br-、Cl-、I- B．Cl-、I-、Br- C．I-、Br-、Cl- D．Br-、I-、Cl-
9 一个初速为零的物体，做加速度为a的匀加速直线运动，运动的时间为t，则下列叙述中正确的是(　　) A．它运动全程的平均速度为 B．ts末的速度比(t－1)s末的速度大2a C．它总的位移为0.5a t2 D．1s末、3s末、5s末的速度之比为1∶3∶5
10 Nowadays some protective parents want to their kids from every kind of danger, real or imagined. A．spot B．dismiss C．shelter D．distinguish

一个力作用在A物体上，在ts时间内．速度增量为6m/s，这个力作用在B物体上时，在ts内速度增量为9m/s，若把A、B两物体连在一起，再用此力作用ts，则整体速度的增量为（ ） A．15m/s B．0.28m/s C．3.6m/s D．3.0m/s

可能感兴趣的题目：

一个力作用在A物体上，在ts时间内．速度增量为6m/s，这个力作用在B物体上时，在ts内速度增量为9m/s，若把A、B两物体连在一起，再用此力作用ts，则整体速度的增量为（　　）

A．15m/s B．0.28m/s C．3.6m/s D．3.0m/s