题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:Physics Bowl by Topic 2: Kinematics - part I General Motion



 作者: admin   总分: 72分  得分: _____________

答题人: 匿名未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle travels at a constant speed3egj 0r,gi ha+rnzf(/k9y1e d around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit time without reference to a particwk(tod.w;jf9 k 0l6udular direction i kj fk(09dd6otw;w.lu s called

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a 1u51 ;gylb ghzcircular track at an average speed of 50 m/s and then completes a second lap at an average s1lyh g;gu 5b1zpeed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 s at the constant veloci lww p:e, 8gdagdpbsavh78,s8)c8g+ o ty. If it continues,8vs o )+pd cashwg ga 8b,el78d8wgp:, how far will it travel in 3.0 s?

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is statlav-,1(fnso djv ;:rtionary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns an,s(rd- vv1alf;o tj:nd starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank relative to the pond now?

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 400 km at 80 km/h and 400 km at 100 km/h. What 6)-mm7 wwjb 1dbd l4snis the average speed of the motoris1-l)bsn mw ddwm 7b6j4t on this trip?

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy can6)+gei0m hswr traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x dir + hng6)0smweiection, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to the mom f3a,go9fsoi i/ (2sk5nqp8w e,kqf)tion of a toy car traveling along the x-axis. T meo 3qk (gqifsop5fk a w,i92n,s8)/fhe graph shown below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refeft o/lymlidkq aj x ex5w.85,0(sc6 h9rs to the motion of a toy car traveling along the x-axis. The k5 6qdew9o jfhxc5it./ lm,slxy(8a0 graph shown below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. timez8owv* 1( u.mnfu5gj u of a duck flying due south for the wint(8oumfj1z5vguu.* nw er. At what point did the duck stop its forward motion?





参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagra a4t,f g:0lrylm below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average veloc4f:l, gal y0rtity of the car during the third second?


参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.18: This question refer to the diagram below whoq-fvan.t,dqm :*yqs j:88c iich shows the position and elapsed time of a car startifi-, :mv:8ac yto*nsd8qqjq .ng from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape o wpu* 4:wr,ewof the velocity time graph for an object with the position time graph shown in the diagram at right?* :ww4oewr, pu


参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to*n)nffw g;iqn)p*cwj3fs 3 r 6 the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the ip63 ws*q* f rcg);ffn)n 3nwjfloor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


参考答案:    

标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following informat 9ve/vd7 iii w+7f,ifdplgbq8)8f n(eion. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its oriv7l+ qb, )fi(n 8 e/giedwv9fpii f78dginal height.
Which of the following would best represent acceleration versus time for the bouncing ball?


参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with a speed omvq2eqb298 h.ic ,g rgf $v$ in still water, which of the following trips will take the least amount of time.

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the foltd ub /n52l4xvw e*a,llowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


参考答案:    

标记此题
18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers tob s j63airja;/ctq8t 5 the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


参考答案:    

标记此题
19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the foll5j)95 ipvxh dbowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the f()(luga9l-alp *mbefollowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


参考答案:    

标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a hozqrb e1z)a61zx: c.(aoy/-x z*e ipg rrizontal table top and off the table edge. Which of the following would best represent( x-zcze:ryaxgoapbiz .q 61)z /1re* a graph of the magnitude of the ball's acceleration vs time?


参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph represents the relationship between distance and time fod59jkqv,2me ib aubki/. 8e. fr an object that is moving along a straight line. What is5fi/ev9.,iaubj.8 qd kkbe m2 the instantaneous speed of the object at t = 5.0 seconds?


参考答案:    

标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represent8 bqg 6y y x3wvoc4qqvc9*o6mc p4)ao0s the relationship between distance and time for an object that is moving along a strai06 )gcqmv4xaocovb6yp * 4qcqy3w9o8 ght line. Between what times did the object have a non-zero acceleration?


参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Eaf p+l5aa3 tvv9 fp5 9f:+ye*vjji)lis rth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air rli*j 3et l5pa5iv:+) vffv jp a9fy+9sesistance, the speed of the object when it reaches the ground is

参考答案:    

标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represen0xc/9xe a yv8wyqiib4lmd/gqq:e 38 8ts a toy car starting from rest and uniformly accelerating across the flx/abql iw 3d9q/ ivmeq 48y 8:8x0cygeoor. The time and distance traveled from the start are shown in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram below represents a toy car s +9d 8rxjwo.x:mkt 0ki-hbvh.tarting from rest and uniformly accelerating across the floor. The time and distance traveled frwij-xbhr.t0ov: mk k+ hx .9d8om the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


参考答案:    

标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car st2a)ch c a(y,0jfi l+gearting from rest and uniformly accelerating acri + gjh0ya2alf)c,e(c oss the floor. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniforml6;cyqv ;212 furl lkdmy accelerating ball. The position of the ball each second is indi2m lr1;yfc l2u v;6kdqcated.
What is the average speed of the ball between 3 and 4 seconds?


参考答案:    

标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly accelerating ball. The position of the balqpbx /v)+l/t rl each second is inqx vr tb/p/)+ldicated.
Which of the following is closest to the acceleration of the ball?


参考答案:    

标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus clown oqx ; m9bj6ah/vn a unicycle moving in a straight line is shown in the graph b mxq;b96/jvh aelow.
What would be the acceleration of the clown at 5 s?


参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on j0nb+ 7a +.j-ozk ftpcd.ev o5a unicycle moving in a straight line is shown ap.bon e5tcv7 d -k+fj+z0j.oin the graph below.
After 12 seconds, how far is the clown from her original starting point?


参考答案:    

标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacuum ny cr,zje8)) yhear the surface of the earth

参考答案:    

标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion iceo av ob3 3v4cd+b 7xg-n4g;of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a4cxvbv4o37dc-be+ 3ngi og a ; negative velocity?


参考答案:    

标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes th;gou -3jj7vk xe motion of a marble on a table top for 10 seconds. For which time interv j-x3kjv7uo ;gal(s) did the marble have a positive acceleration?


参考答案:    

标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a *xzifc lo*// dmarble on a table top for 10 seconds.dx/fzo*l ic* / What is the marbles average acceleration between t = 3.3 s and t = 3.8 s


参考答案:    

标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly from rest/m2y;jc kixq 9 for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

参考答案:    

标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with a speed of q8ctik+g(bfv -*r zj1$20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

参考答案:    

标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the phz aco; :kd /6g(haz;following graphs could correctly represent the motion of an object moving with a z6h;(:c/kog ;pzahda constant speed in a straight line?


参考答案:    

标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes j7. xybgvww/ 0the motion of a toy car across the floor for 10 seconds. What is t7 .vjw/x0gy wbhe acceleration of the toy car at t = 4 s?


参考答案:    

标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a tow/z c va9)1r lm-4svfly car across the floor for 10 seconds. What was the total displacemenr v lma wlv)s41/f-z9ct of the toy car for the entire 10 second interval shown?


参考答案:    

标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the mot-5 yqhgc4qt4 0f9/u fcuzgid;ion of a toy car across the floor for 10 seconds. At what times or time intervals ;i5 ccyuggzt u-904qh/4fd q fmust the net force on the toy car be zero?


参考答案:    

标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. Whicdb g2o0up )u 0fsy(c:xj/1ld yh one of the following choices best represents the acceleration of the carp/: duls1(gf 0xouyb j0)y2cd ?

参考答案:    

标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus7- njw,qmu,zj y8gu,f time curve shown. Which of the following statements regarding its motion is ,jf- mug,w,qnz7 ju8yNOT CORRECT?


参考答案:    

标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the velocity versus time cu wc-z mfu/.o1urve shown to the right. . /z 1oc-fumuwWhen does the car have zero acceleration?


参考答案:    

标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interbpp) bz 2tc:4*q3yn;czex7mb val of time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ballbt c72;*:zzy4b3xcneq) pbmp is kept at a constant 120 degree. Which statement is true about the tennis ball during this interval of time?

参考答案:    

标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are 150 kilometers apart and travelinge- 7pn n(0v/ag1;qu n 1ysdgrk toward each other.n ;/1- re1n udkgyg n0p(sq7va
is moving at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet?

参考答案:    

标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.04: A particle mob nic i i) j,qdlk2*25con0o+oza(u,pves on the x-axis. When the acceleration is positive and incozq 2n0bicli2i*oknujo,+ ,() pca 5dreasing

参考答案:    

标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average velocityx u(q .*4:elrbes )yj4 t: gwqpu8ip;w is

参考答案:    

标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in n;xb vv* y0ry.m4w bq9:rik)q2vm,f8u/ si bhtwo dimensions, which one of the following choices identifies quantities that must hy* k v qmn8h4;0b, bfrxvmu9s:/iwiyv )b 2rq.ave the same direction?

参考答案:    

标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car move;8ic4ho7fo b js $3.0\;m$ to the North in 1 second. The car then moves at $9.0\;m/s$ due South for 2 seconds. What is the average speed of the car for this three second trip?

参考答案:    

标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.05: The position-time kfg.:ce5wb2 w i m91xqg1i0kda.4ewu, $y\;vs\;t$, graph for the motion of an object is shown. What would be a reasonable equation for the acceleration that would account for this motion?


参考答案:    

标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.31: A car moves to the right along a one-dyia,,mhqol 6 cw 5a3w/imensional track for total time T in two parth3/5m6c,ay wo wiql,as.
• Part One: The car maintains constant non-zero speed V for the first $\frac{3}{4}$ of the total time.
• Part Two: The car accelerates uniformly to rest during the last $\frac{1}{4}$ of the total time.
What is the ratio of the distance traveled during Part One of the trip to the distance traveled during Part Two of the trip?

参考答案:    

标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.23: The velocity vs. time graph for the motion of a car on a straight trau3k ,.bnjm(c:kqzv j8-7 gkpk46ik xwck is shown in the diagram.kk kbpv gjj n6ium: q.c,w-8(7k4x3 zk The thick line represents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


参考答案:    

标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of a car on a straight track/xcna eg ffc0 1:)k0i mms-bn5 is shown in the diagram. The thick line represents the velocity. g0ies n kbx0a-cfn5c1/mm:) fAssume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


参考答案:    

标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object gfl x-2g8i h/v4(n lwnwiven by the position vs. time graph sho w82h-ifxv n4lw(/lng wn. For what time(s) is the speed of the object greatest?


参考答案:    

标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object gij ujl-va.) m(6 y0vk1 ekc9nceven by the velocity vs. time graph shown. For which tyac uv9kc) vlee.j k m-1n60(jime(s) is the acceleration of the object equal to 0?


参考答案:    

标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs. time graph for a fapr nq. eayy/fv1. ;a8) b+zkp+vije.ixed time interval of an object’s motion, what quantity hasy. zefiqkrep j+/.; +by.a1vaapvn8 ) been determined for that object?

参考答案:    

标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object moves along a horizontal line with increasin a3 je l;ad8 0)8udmpqj34 gcmrb0*kwbg speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

参考答案:    

标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a trip in two partstvf .i ql)s)p3:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

参考答案:    

标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object ibd;4gd-jz0 z0 ded.ru7o 7y t yk-lti(s released from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

参考答案:    

标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is releasent+hlys85 h 5kd from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

参考答案:    

标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle movinl. km ox3+i-scg along a horizontal axis is shown. What c.+sx- ol3mkiis the total distance traveled by the particle from t=0 to t=10s ?


参考答案:    

标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly idfmqthk j:pvr:ts9 (w d//voi6iw1-a/entifies all of the listed situations for which-wo:tpt1srj v/: v(d/ ikfwm9iq/6 a h there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

参考答案:    

标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for(io7yg,a a 31l 5dco/ (pzsc+fqs 4j 8kivh-gl an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement3splgoi ch+4 sdqfc 5zj/oalg( k8a, -1i 7(yv from its starting position?


参考答案:    

标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity along a linenz l4zczb e9o/i,f:1i vs. time is graphed. Which one of the following choices best gives the properz :fizez1lo4, /9n ibc interval(s) of time for which the object is moving away from the origin?


参考答案:    

标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to w:ln5ru99q e awa.d0 0 blu:asthe right on a horizontal track, each with constant acceleration. At an instant of 5a9s0:danbq er 0 .u:uwwa ll9time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

参考答案:    

标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a *)lsnp(mb ba 42z 6gxbposition $x$, as a function of time $t$, given as $x(t) = -15 - 25t + 10t^2$. Which one of the following choices represents the magnitude of the particle’s acceleration? All quantities are expressed in base SI units.

参考答案:    

标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.41: For the entire time shown in the graph, which one of thex w7/gweibjmuh0 .,u9 following choices correctly /gh w mub9x,e ujw7i0.describes the relationship between the average speed of the truck to that of the car?


参考答案:    

标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best de:d;yqz f8l6d kscribes the instants of time, at which the car and truck travel with the same zqdk:86d;f l yspeed?

参考答案:    

标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each star ltnqzc3vzpp 9d 6/u4cq(3- txt from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for bc q3xcqt3 9n l(6tzp4v/zu p-doth the speeds $v$ and the positions $x$ of the cars at time T?


参考答案:    

标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of an object moving on a horiz.2wd, xty2 uvxop9:qe ontal line is shownw.topdx 2xy 9equ:,v2. At what time(s) is the object moving with its greatest speed?


参考答案:    

标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the positi:i;najd*cz7 sedxb0oos6 ;2 jk7w28ol ps/ro on vs. time graph provided. During wha/jci8od0 daswne:2ok6l;2 7 pxs7oo;jzrb* s t time interval(s) does the mass have zero acceleration?


参考答案:    

  • :
  • 总分:72分 及格:43.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 72 道题
    本系统支持习题练习,作业与考试三大模式,作业考试自动评分,成绩排序一键导出,可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

    浏览记录|使用帮助|手机版|切到手机版|题库网 (https://tiku.one)

    GMT+8, 2024-11-23 19:48 , Processed in 0.472416 second(s), 165 queries , Redis On.