您所在的当前位置：高中物理试题 >

动量定理

> 如图所示，一木块放在光滑水平面上，一个子弹水平射入木块中，射入深度为d，平均阻力为f．设木块离原点s远时开始匀速前进则：（1）子弹损失的动能为，（2）木块增加的动能为。

问题：

发布时间：2024-09-10

如图所示，一木块放在光滑水平面上，一个子弹水平射入木块中，射入深度为d，平均阻力为f．设木块离原点s远时开始匀速前进

则：（1）子弹损失的动能为，
（2）木块增加的动能为。

参考答案：

提问用户：A5***k1F

可能感兴趣的题目：

1 某科研所欲检测一合金的成分，特做如下实验：取该合金64克，与足量的氯气完全反应，消耗氯气71克，则合金的组成可能是 A．Cu、Zn B．Na、Zn C．Fe、Ca D．Cu 、Ca
2 阅读理解。 In high school,all Canadian students take part in a very exciting event. It is "Take Your Children to Work Day".Students will have a chance to work with their parents. My day took place in my mom"s work,the York Region Police Department. When I arrived,a coach was teaching the officers basic combat(格斗) skills. Everyone tried their best to practice. I could see them sweating and panting (喘气). The most exciting part of my visit was a stop at the 911 Communication Center. 911 is the same as 110,119 and 120 in China. Every 911 call in the city is answered here. When I entered the center, I stood beside a call dispatcher (分派人员) arid watched him dealing-with the calls. Suddenly,the phone rang,he picked it up and a woman cried for help. There was a robbery in her house. The call dispatcher told her,"Please calm down and move to the safe place quietly. Don"t fight with them. Just let them take what they want. Please make sure you are not hurt. We are sending officers there." He followed the call and found the address. The call dispatcher chose the five closest police cars from the satellite map and clicked(敲键盘) to send the policemen. I saw the police cars from the satellite map were quickly moving to the woman"s house. Five minutes later,they arrived. I asked the call dispatcher why he sent five cars. He said,"There are different levels of emergencies. Robbery is a high priority (优先 ) ,so we have to send five cars. " The day was interesting. I leamed how the different departments worked together. The officers were very friendly and admirable. 1. What"s the best title for the article? A. An exciting day at a Police Department. B. Robbery is a high priority. C. How the police saved the woman. D. The 911 Communication Center. 2. What is the correct time line according to the article? a. A woman cried for help on the phone. b. A coach was teaching the policemen combat skills. c. The writer visited the 911 Communication Center. d. The police quickly arrived at the woman"s house. A. b-c-d-a B. b-c-a-d C. c-b-a-d D. c-d-a-b 3. What would the woman probably do after dialing 911? A. Fight bravely against the robbers. B. Find a safe place to hide. C. Ask the robbers not to hurt her or take anything away from her house. D. Ask her neighbors to help her catch the robbers. 4. Why were the policemen able to arrive at the woman"s house quickly? A. Because they practiced hard every day. B. Because the woman"s neighbor dialed 911. . C. Because of the high technology used by the police. D. Because robbery is a high priority. 5. What can be inferred from the text? A. Robbery is common in the region. B. The satellite map is helpful to the police. C. The mother of the writer is head of the police department. D. All the robbers were caught and the woman was saved.
3 图为我国江南丘陵某地土地利用结构图，完成下列问题。（14分）（1）根据图中土地垂直分布与土地利用状况图，分析该地区土地利用中存在不合理现象及易造成的危害? （2）表是该地区与黄土高原某地综合比较。区域人口（万人）土地面积（平方千米）土层厚度（米） 2010年粮食产量（万吨）江南丘陵 65 3667 0.1～0.8 56 黄土高原 15 4182 50～80 45 从表中可以看出两区域可能同时存在的问题是____________，__________地区更严重，试分析原因。
4 关于黄石地区矿产资源状况的叙述，不正确的是 A.铁矿资源丰富，是全国十大铁矿基地之一 B.黄金储量及产量均居全国第一 C.大冶、阳新一带铜矿丰富，有“铜窝”之称 D.硅灰石探明储量居全国首位
5 不能用金属跟氯气直接反应制得的氯化物的是 A．NaCl B．MgCl2 C．CuCl2 D．FeCl2
6 下图为亚洲部分地区某自然要素分布图，箭头表示洋流方向，读图回答问题。（10分）（1）A、B、C三地气温年较差由大到小依次是。A→B→C自然景观的过渡体现了地理环境的地域分异规律。（2分）（2）乙海区洋流的方向和北半球（气旋或反气旋）气流运动方向相似，其中洋流a的性质为，甲岛附近世界著名的渔场为渔场。（3分）（3）D、E两地7月份气候差异很大，其最主要的影响因素是。甲岛冬季多雪，形成图示降雪量分布状况的原因是。（3分）（4）下列关于该区域冰川面积变化研究技术的说法正确的是（）。（2分） A. RS技术帮助研究人员进行空间定位 B. GPS技术实现大范围动态监测 C. GIS技术分析冰川面积变化的影响因素 D. 地理信息技术是唯一的研究手段
7 若sin θ 2 = 3 5 ，cos θ 2 = 4 5 ，则θ角的终边在（　　） A．第一象限 B．第二象限 C．第三象限 D．第四象限
8 ________ I entered his room, he was writing a letter. A.When B.Since C.While D.As
9 下列属于我国重要的农产品出口生产基地的是 A.长江三角洲 B.三江平原 C.华北平原 D.成都平原
10 完形填空。 Ella is my best friend and we are neighbors. She was, at one time,a(n) 1 person. She was busy all the time. She taught in a school for a time, worked 2 in local politics to discuss environmental policies in her area,and volunteered in many other places. I remember a time when Ella took out her wallet and wrote a check for a woman who had no rent money and was 3 getting kicked out of the house. When I was 4 my most painful times, Ella was 5 there beside me. Then some time later,Ella had an accident that 6 major brain injury. She then unluckily 7 her career and most of her abilities to care for 8 herself. Despite the severe (严重的) 9 , Ella has been able to live 10 11 years. But her condition is 11 by diabetes (糖尿病), which has been with her since youth. She has been 12 with the situation and is in her sixties now. I received a call the other day,telling me that 13 Ella must now have an operation on one leg. She doesn"t 14 from her old illness. This situation has been caused by foot sores (疮) that have 15 her a lot for the last 3 to 4 years. Her sister is living in the house with her,as well as both of their husbands. 16 , age and medical problems make it very 17 for the four of them to manage. I 18 a train ticket last night to go to her home.I will be there soon.I"m sure I will be 19 to them during this very hard time. I really enjoy doing small acts of 20 . If I can make a difference to somebody"s life,my work is done. ( )1. A. funny ( )2. A. enthusiastically ( )3. A. in control of ( )4. A. putting forward ( )5. A. never ( )6. A. put off ( )7. A.lost ( )8. A. ever ( )9. A. pain ( )10. A. healthy ( )11. A. replaced ( )12. A. starting ( )13. A. unfortunately ( )14. A. break ( )15. A. confused ( )16. A. After all ( )17. A. difficult ( )18. A. booked ( )19. A. patient ( )20. A. customs B. active B. completely B. aware of B. giving up B. right B. came from B. enjoyed B. even B. stomach B. additional B. affected B. studying B. obviously B. benefit B. troubled B. However B. easy B. missed B. great B. panic C. lonely C. carefully C. regardless of C. going through C. seldom C. turned out C. gained C. still C. headache C. unhappy C. simplified C. struggling C. suddenly C. suffer C. pleased C. So far C. comfortable C.left C. ready C. kindness D. strange D. hard D.in danger of D. looking through D. nearly D. resulted in D. continued D. thus D. stroke D. quick D. suggested D. talking D. unreasonably D. heal D. relaxed D. Therefore D. careful D. considered D. helpful D. manners

如图所示，一木块放在光滑水平面上，一个子弹水平射入木块中，射入深度为d，平均阻力为f．设木块离原点s远时开始匀速前进 则：（1）子弹损失的动能为 ， （2）木块增加的动能为 。

可能感兴趣的题目：

如图所示，一木块放在光滑水平面上，一个子弹水平射入木块中，射入深度为d，平均阻力为f．设木块离原点s远时开始匀速前进

则：（1）子弹损失的动能为，
（2）木块增加的动能为。