您所在的当前位置：高中物理试题 >

匀变速直线运动

> (14分）在某一个探究实验中，实验员将某物体以某一确定的初速率v 0沿斜面向上推出（斜面足够长且与水平方向的倾角θ可调节），设物体在斜面上能达到的最大位移为 s m，实验测得s m与斜面倾角θ的关系如右图所示，g取10m/s 2，求：物体的初速率v 0 和物体与斜面间的动摩擦因数

问题：

发布时间：2024-09-11

(14分）在某一个探究实验中，实验员将某物体以某一确定的初速率v ₀沿斜面向上推出（斜面足够长且与水平方向的倾角θ可调节），设物体在斜面上能达到的最大位移为 s _m，实验测得s _m与斜面倾角θ的关系如右图所示，g取10m/s ²，求：物体的初速率v ₀ 和物体与斜面间的动摩擦因数

参考答案：

提问用户：6m***jAk

可能感兴趣的题目：

1 已知 - π 2 ≤α≤ π 2 ， - π 2 ≤β≤ π 2 ，且α+β＞0，若sinα=1-m，sinβ=3m-2，则实数m的取值范围是______．
2 已知正方形 ABCD的边长为1, 则 =（） A．0 B．2 C． D．
3 下列关于动与静的说法正确的是 A.坐在车上的人以车为参照物则人是运动的 B.地球同步卫星以地球为参照物则卫星是静止的 C.月亮在云中穿行以月亮为参照物则是静止的 D.观光电梯上的乘客以自身为参照物则电梯是运动的
4 David has a big house, which ____ eight rooms. A．is made up B．consists of C．makes up of D．makes up
5 沿海沿江港口、铁路枢纽地区，对工业具有很大的吸引力，是因为 A.利于原料的输入和产品的输出 B.靠近原料产地 C.靠近销售市场 D.农产品充足
6 (12分)某化学活动小组设计如下图所示(部分夹持装置已略去)实验装置,以探究潮湿的Cl 2与Na 2CO 3反应得到的固体物质。 (1)写出装置A中发生反应的化学方程式: 。 (2)写出试剂Y的名称: 。 (3)已知:通入一定量的氯气后,测得D中只有一种常温下为黄红色的气体,其为含氯氧化物。可以确定的是C中含有的氯盐只有一种,且含有NaHCO 3，现对C成分进行猜想和探究。 ①提出合理假设。假设一:存在两种成分: NaHCO 3和 ; 假设二:存在三种成分: NaHCO 3和、。 ②设计方案,进行实验。请写出实验步骤以及预期现象和结论(可不填满)。限选实验试剂和仪器:蒸馏水、稀硝酸、BaCl 2溶液、澄清石灰水、AgNO 3溶液、试管、小烧杯。实验步骤预期现象和结论步骤1：取C中的少量固体样品于试管中，滴加足量蒸馏水至固体溶解，然后将所得溶液分别置于A、B试管中。步骤2：步骤3： (4)已知C中有0.1 mol Cl 2参加反应。若假设一成立,可推知C中反应的化学方程式为。
7 完形填空。 I became a gardener when I was twelve. My early 1 of gardening may not have originated from my love for nature. It was to 2 my parents. At that time, we had a big yard in which a beautiful maple tree stood. But my mother often looked with 3 at this work of natural art. Those golden leaves seemed like tons of rubbish her, "something else to 4 !"Seeing the neighbors busy with gardening, my father ever thought it a waste of time. At that age, I always did something 5 to whatever my parents did! If gardening were something they found 6 ,I would plant a garden! I planted some lily (百合花) seeds in the yard. But they failed to 7 . I continued to sunflower seeds and roses, Wild 8 joy, I found the first rose bloom(开花).One by one, the flowers bloomed their heads off. 9 , I was touched by this land of wonder. 10 , my parents showed no interest in my garden. My father even 11 at me because found it was 12 to move around my garden to the driveway. To my mother"s 13 , I put her vase my real roses which, in her eyes, were simply weeds 14 flowers. Regardless of their 15 , I kept on planting my garden and 16 to enjoy the pleasure gardening. Plants make such good companions: they breathe, they bloom,they 17 to care and love. It has been many years since I made my first garden out of my desire to 18 my parent .Today I become known as Mrs. Greenthumbs, teaching gardening and hosting a gardening show which makes my parents feel very 19 . And now I could say it is my affection for 20 that makes me a real gardener. ( )1. A. memory ( )2. A. please ( )3. A. doubt ( )4. A. collect up ( )5. A. equal ( )6. A. painful ( )7. A. come up ( )8. A. to ( )9. A. Luckily ( )10. A. Inetead ( )11. A. should ( )12. A. convenient ( )13. A. sadness ( )14. A. other than ( )15. A. dislike ( )16. A. decided ( )17. A. devote ( )18. A. defeat ( )19. A. proud ( )20. A. freedom B. dream B. change B. appreciation B. care about B. similar B. valuable B. break out B. with B. Cheerfully B. However B. laughed B. troublesome B. displeasure B. more than B. encouragement B. stopped B. turn B. satisfy B. comfortable B. life C. intention C. help C. surprise C. clean up C. superior C. upsetting C. hold on C. in C. Regularly C. Therefore C. glanced C. enjoyed C. delight C. rather than C. threat C. continued C. respond C. respect C. strange C. growth D. design D. annoy D. excitement D. come in D. opposite D. interesting D. get through D. by D. Eventually D. Besides D. jumped D. dangerous D. relief D. less than D. suggestion D. struggled D. challenge D. lead D. disappointed D. nature
8 【物理——选修3-5】（15分）小题1:下列说方法正确的是（） A．人类关于原子核内部的信息，最早来自天然放射现象 B．在α、β、γ三种射线中γ射线电离作用最强 C．放射性元素的半衰期会随着温度的升高而缩短 D．较重的核分裂成中等质量大小的核或较轻的核合并成中等质量大小的核，核子的比结合能都会增加小题2:某小组在探究反冲运动时，将质量为 m 1一个小液化瓶固定在质量为 m 2的小球具船上，利用液化瓶向外喷射气体做为船的动力。现在整个装置静止放在平静的水面上，已知打开液化汽瓶后向外喷射气体的对地速度为 v 1，如果在△t的时间内向后喷射的气体的质量为△ m，忽略水的阻力，则（1）喷射出质量为△ m的液体后，小船的速度是多少？（2）喷射出△ m液体的过程中，小船所受气体的平均作用力的大小是多少？
9 Was it because of the heavy snowstorm in Europe ________ the flight had to be put off?
10 下列省区中，与湖南省相邻的有 A.河南省、安徽省 B.贵州省、云南省 C.广东省、江西省 D.湖北省、陕西省