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 speed around a circular path of r -8u.pomb pl-v:jh5mn(yj e-fadius $R$, 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 particulaa1idvn8lhlx2q 7.jy,r directio,82. hjv nay1q li7dlxn is 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 circular track at an average speed coju ;3k)ad7xof 50 m/s and then comp7cakjo )u;dx3letes a second lap at an average speed 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 velocity.67jys5l0/psib13gh6ppj fue If it continues, how/u3psy17b0sp f lgj6e j5 phi6 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 stationary on a 30-kgw3 *h uwxm 1a8dm7mns1 plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative tmush3namw1m*d 17 x8 wo 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 k-xd 0 5ai9xvr8 kciz9 z1p6plzm at 80 km/h and 400 km at 100 km/h. What is the average speed of the motorist oxpvr9k0izz c6z9 d158-l iax pn 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 mo3ah;;ncxvtj 7tion of a toy car traveling along the x-axis. The graph sha3 c;;v7t nhxjown below is a plot of the car’s velocity in the x direction, $v_x$ 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 motion of a toy car traveling s41t;v c-*cyl+i-jskuu/kl dalong the x-axis. The graph shown below is a plot ofc *ky1vscti-ulj+4d;u-/k s l 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 refers to th)16,oyzcei 8eprf ;s( 7jtt dte motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direct;de,sey ti(c8 fo1)7p6rjttz ion, $v_x$ 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. time of a duck flying due south forhjgx*6xoo -8;z gpi*n v iie)2 the winter. At what poin6g i-vo)g;** xojhe px2i8iznt 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 2: j+mnf+k2grfpd7 fqdiagram 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 velo 2qm 2pn7+djffrgf+:kcity 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 diagram9pl 6wci0q2x.a+t imza qui11 below which shows the position and elapsed time of a car starting from rest and uniformly acceleratinpi+qmul2i z.ia q1ac0xt6 w1 9g 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 of the velsk ,/5bn)dt+9dbefe docity time graph for an object with the position time bsddbe f9)kd,5+tn /egraph shown in the diagram at right?


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 the following information. An ideal elas,9g.o5j0 duony: kbgo4i1- lmoo4zqltic rubber ball is dropped from a height of about 2 meters, hits the floor ggq0b4uk,oj-z o.l 5:n od9moy oi l14and 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 ft)6 rqi o d34q5dc7e4b3(xc8n ej rdeinformation. An ideal elastic rubber ball is dropped q4 (e7n dq8terrjce 53b4oixfc6dd)3from a height of about 2 meters, hits the floor and rebounds to its original 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 speeduu8krde : 1 81.ekasly of $v$ 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 following,juvtw v(8 4ij 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 thf- koye9/ bta(f 2b8viq a6 1r87a;4yfnmtkjo 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 follytlz yi9dq+8dbt, )07 )mp zztowing 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 tzsjar( j mw132he 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.
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 horizontal i48dubzxd)3f table top and off the table edge. Which of the following would best repr d3b8z)xfi d4uesent 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 distanch1 a)o ao v wuym33zh8 q+ht0vve-g2o*e and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5v a*ztq1h e ah) y3hgv203ovo-8+o umw.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 represents t. um:2jyci 6vrgi50 klrjhwzptf/yr7 (7ap0;he relationship between distance and time for an object that is moving along a straight line. Between what times 7zyhyj06gi/fram5ikw0 2r r;pu7v(cj:lp t. 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 E-)ndfg4m0 cswarth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring a-0gwf sn c4d)mir resistance, 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 represents a toy car start,fyjj(eqr0 j)ing from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagramj )jeq, f(jyr0.
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 starti0ulpu5tih6/t ng from rest and uniformly accelerating across the floor. The time and distance traveled from the start /ut tpl6ui0h5are 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 starting frg cfx+rqrv9u(w5g6g2 b :ro (xom rest and uniformly accelerating across the floor. The tim 9 cvqrb6(gg+ (xox2rugw:rf5e 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 uniformly accelerating ball. The position of the b3 s(/: w0tzqomzzg jz 5z)j6ioall each second is indicate o63wz to5 zq j)0/s:zmzijgz(d.
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 acceler 6n3-rccvva-gating ball. The position of the ball each second6g-c 3vca-rv n is indicated.
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 on g iumo z.8m1mz;a9rhy0 l) o9sa unicycle moving in a straight line is shown in the graphol9u)0i1hs zmz ; ogymm8a.r9 below.
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 ci 5bdwu(ts m n58g4.gvpn82bqq o34orircus clown on a unicycle moving in a straight line is showti5dub b 44nsq3wp2nv 8o gr.o8q( g5mn in 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 *ebvcts(g 97(v5s nd, s.wtwta vacuum near 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 motionrqyu8 dpml9;cs1 u1;v of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negative velocits; mv ;yqu9lur 1cd81py?


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 the motion of a yym 2ue jc11yjml v+0g /vae(:marble on a table top for 10 seconds. For which time interval(s) did the marble have a positij2mvy/vujmye11 ley( gc+ a0: ve 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 marble on a table top fou1pex3nj2 +.s40rgrxpci/f4 sqh: rxr 10 seconds. What is the marbles average acceleration between t ixqxp4s:ns4/0ju 2 c+rhgx3.rfpr 1e = 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 for a time mzxtj2*g2c o(riaiib it++; ad m9,m5 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 straim(ha0q xg9x 9lght downward with a speed of $20.0\;m/s$, 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 following graphs could correctly represd4fjov 85g-oy5 xbtk(7 j*ddo nps4b8ent the motion of an object moving with a constant sbvd5o4d o7yb8g-x otjsjp 5kd8(4*fnpeed 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 the motion of a toyhfgs 3 m,,e(jv car across the floor for 10 seconds. What is the accelerat h,fmg3,e vs(jion 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 gr +k:t;l yl4bufb gy14taph describes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the b y t ;l:ylf41ubg+4kttoy 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 motion of a toy car across the flbi9 1e*5dii osoor for 10 seconds. At what times or time intervals9 i1d*i5beois must 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 kzeg0(p5an /kn,4c eno m/hr in 4.50 s. Which one of the following choingoe0ea4(pk, cn /z5nces best represents the acceleration of the car?

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 versus time curve shown. Which of th 5i24*hxkp e;utuwyhr2ukg+;e following statemenk+t4ygku*ph2 u 5 ewir;;h 2uxts regarding its motion is NOT 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 c 0w,7-yts:fa.d bkk wpurve shown to the right. When does the car have zebskw .k0-a:pwd 7ty f,ro 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 interval of time, a tennis ball iip( gfs)p3+ff9f du8d s moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during thd89ifsf+g(f3fu ) p pdis 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 traveling towa00ykc. ;jst;f.aiy dnrd each other..d ;tyjck.fn 0 isya0;
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 moves on the x-ax*oc7o fw3 9cksa94wpn 0 hst7bkosrju4j, h27 is. When the acceleration is positive and increas7o ,*j2ktsck0ws3ao h4w 7s bopu947rn9f jhcing

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 ofhuk+ (d:ela6f:/*demkk*vf z average velocity 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 two dimensions, which one of the following-plm-/pttn84gnid 0u- n-cy* mr o4tq choices identifies qc n*dm 0tu48gqnoi4n-y/p--t rlm- p tuantities that must have 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 moves 1tr fln0q5/fao hx0f5 $3.0\;m$ 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,/ h5vm8:r wzp o9k-wfyiga3lm1d2:ar $y\;vs\;t$, 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-dimensional trac 7ifay06r(gihk for total time T in two par( h0iag7fy6r its.
• 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.)w+vp c i5d b 8hp+jp2rtbo8o. time graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car star28 .bw p 5oprcipj+ov d8+hb)tts 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 thtjt g4j;wtzet o2;a-)g2xp k7 e motion of a car on a straight track is sh 4 2 wxtegajt);zk2 gjot7p-;town in the diagram. The thick line represents the velocity. Assume 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 *dq;q4m*. qux i s89fhsl3ushs a)i4uan object given by the position vs. time graph shown. For what time(s) is the speedms qh*ls4q9ia)38q.4ud;f*s u i hx us 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 gcbegvv;(* lf9iven by the velocity vs. time graph shown. For whbcv;9g(*vlef ich time(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 g)sf:qli8e9u4wg)+y * ww jr/ejmx5yyraph for a fixed time interval of an object’s motion, what quantity has been determinedyef)w y xrlj iw4u*g85me:+9) w/syjq 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 horizontalk 5;fs-iv9f- t*skp9c,vz6n a kw)tpf line with increasing 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 t t)w2li6 mw:ami 45(,x:rnfb dvxwk) jrip in two parts:
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 is released from rest and reaches the groun4q3 :knzy.wpfd 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 released from rest and reaches the ground ct( o a) ja-f qr71n.9pwnu:p9fnyg7gvp j 4i,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 pal-j d k68axjs3rticle moving along a horizontal axis is shown. What is the total distance traveleklj - jsdxa368d 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 identifies all of ,/rc f4 (c)g /-.dkw w;ydjjm9tnxgwh9a- kdzthe listed situations for which there is a nonjy-zdw;g.9rt/k4ak cj -d)m9 (x cdwfn,/ghw -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 gra-79r ,na . ,cqfoz9 k4lyflilhcu9i(v ph for an object moving along a line is shown. Thefl,q .zr7luy 9 fhl9,c4oci ki9(vna- object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement 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 line qi4:(z5 5hgq/w m g-wm)kcgli.tu 8byvs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for qw w:z )455-lhykc u(/m 8qgt.bgimg iwhich 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 the right on a horizontal track, 8zm9z w5m +ka,lc-p gneach with constant acceleration. At an instanwap+zk5c8n z-m mg9 l,t of time, 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 posi2a71)btriy6fs 4b( ,oa x mcjbj+ssn*tion $x$, 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 gr36hoxhfe j*e8yzk8 v n9.b5 craph, which one of the following choices correctly descrjn8z c.hrevey859o3b f k6h* xibes 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 .k u1(:nor pwj-ig4vpdescribes the instants of time, at which the car and truck trave( ip-j1u:4gvpn.kr wol with the same speed?

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 start from rest at the origzszk)gj(, -5qxy cu-cin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly id(z -j5)uqskg-c z,cxyentifies the relationship for both 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. timhle6qpy /5m h19im:gg e graph of an object moving on a horizontal line is shown. At what time(s) is th:6mgp1h/ yielqg mh95e 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 followingvepxztnlw4 , c pd6qb7j;:3 0m the position vs. time graph provided. During what time interval(s) dt; lb3mq w 6vzxjdc7,e4p0np: oes 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, 2024-11-24 08:14 , Processed in 0.671714 second(s), 165 queries , Redis On.