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 circu:n;9dl3t:lk r u 1ipmilar 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 partz(5 vkz/mamo dn2 *(rsicular direct(knvr* sm/5am2 zz(odion 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 tra6)xojg e5; mgw.b0yp heecx0)ck at an average speed of 50 m/s and then completes a second lap at an averagex0 )w; eh0pegxoy 5 6m)cbej.g 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 1.04ih;,lkgt,7u tom8tt s at the constant velocity. If it continues, how fg u8 l,h,ti;ot4 kmt7tar 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 statio f+vq ali( 9dkmln1b,*nary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionlq l*9di, 1klva fn+bm(ess pond. The boy then turns and 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 5(dty d0p 0bq b2sp86bq4wxos u-v.ek at 80 km/h and 400 km at 100 km/h. What is the average speed qs edt625ks0.wdvyb x-qb b0(48 popuof the motorist 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 refer 49gj6gn7ume9o::kn q ej) yl )j0zqwss to the 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 direqk 0gj6elu4::o7n9z )ye sn wmj qj)9gction, $v_x$ 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 referu m(;mwjrb. osij2: z:s to the motion of a toy car traveling along the x-axis. The graph shown below is a plobor(;j mmjzi.:s w 2:ut 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 refers to the motion z-sf lwrl5g+so8 b(/iof a toy car traveling along the x-axis. The graph shown below is a plot5fslzl8+gw-(r s/ i bo 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 theqkzc8cs/23 pjdb*r:df ,k n+d velocity vs. time of a duck flying due south for the winter. At what point did the duck stop its forward / rf,*jbcq:k nd zd2cspd3 k8+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 diagram bel(*luz rdycy1+r3k 6 ebow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during tkr*zby6 ( rl+1yuec3dhe 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 which shows the pn .ynd k. frs-pfl)n-;osition and elapsed time of a car starting from redyl) nk -nf.rf. s-;pnst 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 of the velocity time graph for an obje;ll)-xvo hd--r9 wrxcpv;nxd3z 9 8w nct with the position time graph shown invcdo 9; nr n3vwl)pzx;89xlxd- rh-w- 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 questio 0d: z9e+tstmrn refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floo+d: 9zt m0restr 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 foll 6h 35x l41d-i acoy77bbmtrvhowing information. An ideal elastic rubber ball is drop 75d6lba-hm7chyvoit rb13x4 ped from 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 travel7 wvp(.juvfa2 with a speed 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 s td;-g4rgnse( cenario: 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 to the following scenario: ) u93pa-cbuued)k/fshog k63 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 followpq9lh(fgg+ bj9un (b r- oj-*zing 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 following scenario:q8mhea :. ymq,w -4hpn 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 table top and l(r)ioq5dfk 3x:(agnoff the table edge. Which of the following wodkn53 x(g:)(afloirq uld best represent 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 tmwk1p 7vi2ds+ynfo *- ime for an object that is moving along a straight line. What is t2y *sv 1kpn7 f+i-wmodhe 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 rep4yo qirfx10 8hresents the relationship between distance and time for an object that is moving along a straigo1xr4y0f 8hiqht 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 throw zthifkaojec5fu:10wb 3- 03 jn straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when it reachesu1 3h w kjfe-o0zc tji3:05abf 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 starting from rest a;optmg5-o k) fxw2of1q bpmt5+ s(:dznd uniformly accelerating across the floor. Tbt;2sgd kfo+f zow( px5 5 q-tm)mo:p1he 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 starting frox, tp(a)e0u l7z:s1ylyv)tc vm rest and uniformly accelerzalv: tx v )syt0cy),(lpeu 17ating across the floor. The time and distance traveled from 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 rep zi9kb7 dnbmwlb(3l:8 resents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in td 3lbwlbb9 (7:8z miknhe 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 b vx nsdz(pn85(all each second is insn(zdvnx5( p8 dicated.
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 uniforml pbpc*tuqt70 j*ufps5f+rb4 6y accelerating ball. The position of the ball each second is indicat fp4 *bpqu s*r6tt0bfc 5ju7+ped.
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 a unicycl:66a d 5t1lrm1n. t,k g.pp(ecahwus we moving in a straight line is show tsdlka1p(1rch.et56p w :am 6nwug.,n in the graph 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 circus clown on a unicycle movin3vc*c,8m0tbe glvu75ri a(ka g in a straight line is shown in the graph below.k(v cgmrcb ,a0t8u3*iael5 7 v
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 freea7rnnvkg(;;)o9;l x b bb .2iat1o sculy in a 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 motion of a marble ou/kpk6ayq;a4 n a table top for 10 seconds. For which time interval(s) did the marble have a negative kyq;/p a6u4akvelocity?


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 motio l;s+)kipi qv/n of a marble on a table top for 10 seconds. For which time interval(s) did the +;kii pl)q/s vmarble 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 motiobx hefc:. j.c1ig0- yvoqqb. 6n of a marble on a table top for 10 seconds. What is the bq:i-.jv c b. .goh6c0qyf1xemarbles 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 for ef5jqob:q+, f.4 mpoy 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 pl8sui j7)f/zxjqk ;9of $20.0\;m/s$, 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 represent the motionk4xuut)b6qgp vs swws47z1775zx *q n of an obs*v6 7z4s1)wxs 4xzu7gqwu 5t pkb7qn ject moving with a 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 the motion of a toy car across the flo 5k.dgvc.qm o6or for 10 secg.6d qo.5 ckvmonds. What is the 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 mog8qwm+od.r55+bq *aa e jn+tdtion of a toy car across the floor for 10 seco qqa5* do+d n5gae.w mbr++8jtnds. What was the total displacement 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 motion of a toy car aws7 s uqbhitq//+lr 4*cross the floor for 10 wq/qil sh us/4*rbt7+seconds. At what times or time intervals 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/hr6 lrm0uk h0bb4 to 60 km/hr in 4.50 s. Which one o m040krblb 6huf the following choices 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 owjpbk 1,hy, 83/bpnizf the following statements regarding its motion is n38ipbwk,z,y 1j/bhp 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 accinh 72zy z5ogo rmn4,:ording to the velocity versus time curve shown to the right. When does the cm:7 iz 2nzyno 4rog5h,ar 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 interval of time, a tennis ball ishz4rz4 1+udm,l 4lql/c . wjgn moved so that the angle between the velocity and the acceleration of the ball is kept at a constcn4+ /4,4wm1zhlu zdl jq .rlgant 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 traveling towac ykt zkf) +88)el4 jsqw5hk,ard each other.)f kq4k5yc s+,zjt8alwh e8)k
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-axis. When the acceleration is positiveky822kdf3vxk- x1 jja and increa3yx2jf2vkkxkd 1 - ja8sing

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 ve98 n/j5btgayc)c5wdalocity 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 o.h dep*u uw xz5sq;44sne of the following choices identifies quants.5dwp4h s*4 qexu;zuities 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 yf hye.s6a g)un )g7r,$3.0\;m$ 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, uv 39vev9btdf (y0ma 6$y\;vs\;t$, 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 track for total time Ttmca0- d2;ce h in two para2-teccm 0;dh ts.
• 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 q9o .7./8wzyv:oma pvu/ cryma car on a straight track is shown in the diagram. The thick line represents c. z / 7yvywqa8 :mr9uop.ov/mthe 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 e,pk0anm1f p9ku (a.w straight track is shown in the diagram. The thick line represents au1 , pk.n(ekmpw9a0fthe 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 an object given by the position vs. time gra t(l9nz)iq nfvk7 d-p.ph shown. For what time(s) is the speed of the objecki.n7dvtfnl9 p( z)q -t 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 given by the velocsv;7aeq3al d:ha; :x) usjl4d ity vs. time graph shown. For which time(s) is the accelers7;s3h;qlal :d ajxv:)4de uaation 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 f.j l)vqy/d+3 p.oz te qxmf7e1or a fixed time interval o3 vfdxe p)q7y /.zlo.tme+j1q f an object’s motion, what quantity has 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 ivmcgn7 1z 2d:uh)r5 bsncreasing 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 tr5 tst+v,qco4viov); s hr, 9lhip 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 s9b7l1u1m bo*meq( ; umjd;ae 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 released from rest and reaches the ground in a time +ofm1 b07ib bl lc0t, 5dsp3nxof $2.50\;s$. 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 moving along a horizonetz3hhk+ yyya j/j7r/.7ra 6ptal axis is shown. What is the total distanc+t76hya/hzk e rrj/pa 3.y y7je 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 correctlyk-yc ,th r-0kvjm)un0 identifies all of the listed situa n-0)k rtj-u,yk vchm0tions for which 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 an object moving along a linee-umh2 0ilz2:pe2 rwm is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain am ezue-ih2pmw02l :2r 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 li; lz- *u4mwe(rh 5nrxkne vs. time is graphed. Which one of the following choices best ginwe;k- 4zx( r r5u*mhlves the proper 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 71f;t2lf v0hze)-*er eh56 gq szotvf to the right on a horizontal track, each with constant acceleration. At an instant of time, the informa het; v g)5z1l soqt*6ff70fv 2z-eehrtion 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 hay7c7(57 y vd eut/kdwas a position $x$, 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 shownlw(h* fv5 q+yw in the graph, which one of the following choices correctly describes the relationship between the average *wywvf 5h+ql(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;j kumb+ 0*dyeb78le u choices best describes the instants of time, at which the car and truck travel wuule+djb;7 e 8mbk*0 yith 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 origin and will mo,tdhzcm+i) 6cq 1/hm qve along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the folm tdz+q6/hi1m,q c)hclowing choices correctly identifies 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. time graph of an object moving on a hr,(yvjonp:5v 2or p :rorizontal line is shown. At what time(s) is the o :pjr5no ,p2(:r rvvyobject 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 posifpo8r) tr wl2v:u- uw-m7qui9 tion vs. time graph provided. During) tufr-ruo9lqu28-ipmvw w 7: what 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, 2025-4-9 08:28 , Processed in 0.476682 second(s), 165 queries , Redis On.