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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: 游客未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

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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 pngq,38h c /nl)8y gy iktch2k9ath of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

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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 referenckry 6z 7,kqll sckr((*e to a particular directiorsqk ,lk6*yk z(r(7l cn is called

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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 ata4-dl8wm t c;o an average speed of 50 m/s and then 8wo m;c-dt4lacompletes 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?

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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 0+wg40lki rzi m in 1.0 s at the constant velocity. If it continues, how farkzr4g+wl 0 i0i will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is statioiv0nevco ci8*xhhw51 gn6/gb,8cc 9 dnary on a 30-kg 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 to the plank. What is the speed of the plank relative to the pond,h9 gexc*d88v cihvn/0 wn o1gb56cic now?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 400 k ymr 9cf* udf fe/gri 1;g.ku*4)x2hbgm at 80 km/h and 400 km at 100 km/h. What is the average speed of the muuk*i; dexbff)ghc g4 21m9f yr.*r/gotorist on this trip?

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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 c.oofsu eyr 0 i;9 jg6 rb+j.sdi;pr6e.ar traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x directig.o ;riir. jeu 6+os jf.9rb60sdy ;peon, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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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 a6;;rbll aapt(v.x/sz toy car traveling along the x-axis. The graph shown below is a plot of ttlb. 6v(pxa z/al s;r;he car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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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 of a toy car traveling along the x-cato 8ps orl.*vo(+*l axis. The grap.**l to(v l8 acrposo+h 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?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graphqz;pu,he y5z/m l 4u/r of the velocity vs. time of a duck flying due south for the winter. At what point did the duck stop zeu/qz; ,m54u rhyl/ pits forward motion?





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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 below which shows the position and elawv(o 3uh4fvm( psed time of a car starting from rest and uniformly accelerating 4(h3vv(wmf ou in a straight line. What was the average velocity of the car during the third second?


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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 beloq,.qp nef.04:hbw) f,2npiwow5bxpl w which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is n5 w pfwef4phb x,. .oqi bqp2,l0wn):closest to


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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 forkg b7k 6 lxy,jtt-f.j( an object with the position time graph shown in the diagram at rightkj 7k.fgt(-x,ylb6jt ?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following qu*r*yrxos5 -i 8 qcn9oaestion refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and reboundsx59o*ayq- *irosc r8 n to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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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 information.yx vh3a5v8l jpbb0b.f utb34.*xpy+ q An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floo8xvpf03*4 ya yb.xtpb bl5 3u j+bqh.vr and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with5ll6fv-. knjq ,hy6 ie a speed of $v$ in still water, which of the following trips will take the least amount of time.

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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 scenario: At2ndr,p :+ m-5-upy3rjx-d6 xd;ly z)bylmpdd $t_0$, 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?


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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 8rfoi:; t j j.cei9b1ascenario: 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?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refeo)s+ ima+g mbu1r0x x+rs to 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.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the foktv78n 3 cf3rxllowing 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?


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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 horiq/41 8q w*5 qqmfvy;zfmdr: fbzontal table top and off the table edge. Which of the following would best represent a graph of vqfqb1frz w;m8y:/ fqdq 4* 5mthe magnitude of the ball's acceleration vs time?


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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph represents the relationship bakxwah r9) i,/etween distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0ar/,iw h)x9ak seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents zj .tg9c*3 cnxpc -68nfjura 0the relationship between distance and time for an object that is moving along a straight line. Between what times did the object havep6jrcnuf 0j-c3 t.n 8cz9g*ax a non-zero acceleration?


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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 Earth with an initial speed4a1+mxaig dogrf*y0 c+ (+ler of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the sp4gi0dym oxg+e +*(lc+ a 1frraeed of the object when it reaches the ground is

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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 an lnu .gw-9m*lpc5rb* id uniformly accelerating i*lwuc.mn5 -9*r bpgl across the floor. 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?


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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 ca4 n0wqcx s)yc(;d 2s8hnnfer-r starting from rest and uniformly accelerating across the flo4cxqyn)f 2s0-dw8c ;e(nrsn hor. 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?


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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 from rest and uh+-dr vcer8f;+p7w 2ju w8sfdniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagrf2 chfpw+ds vr ed r+7wu-;88jam.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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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. k;j fp+kxit7n y2auynq+ (9 f6The position of the ball each secondfk j i ukpa9qy+ ftn;xy2(6+7n is indicated.
What is the average speed of the ball between 3 and 4 seconds?


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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 ofr6 5qzum g9d bcbdrnw927+-z k the ball each secondmzkq7 w+rnbd6- z2gu cd59rb9 is indicated.
Which of the following is closest to the acceleration of the ball?


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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 up7s1e3a6l spa nicycle moving in a straight line is shown in the graph belo l36pe1p s7aasw.
What would be the acceleration of the clown at 5 s?


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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 muqk+lf sl 4estwd* 0).-c1j(esmfii2oving in a straight line is sho-iefit)e l4wj .usk1scmsl2fqd +( *0wn in the graph below.
After 12 seconds, how far is the clown from her original starting point?


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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 near the surf1xc u-yez 5xt8ace of the earth

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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 on a table da**r5r /5sur4d e0bupg,xfatop for 10 seconds. For which time interval(s) did the marble have a negative vel0rbu*ex s a,5aud*gf4rd 5/rp ocity?


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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 marble on a g(p/;7sr qhg btable top for 10 seconds. For which time interval(s) did the marble have a pgrphsg7 (/b q;ositive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes tyh): p)omme/c c,h(u7 yp1w/ivsi u:k he motion of a marble on a table top for 10 seconds. What is the marbles average acceleration betweiy17/ui(,me:u)c/p hy chm vso pw:k) en t = 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly f8is-jhd/ is)o rom rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straightktwwe ,s:+nk01qa dl) 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.

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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 correctl 3i (uhju4o6ryy represent the motion of an o uo6 (urh3i4jybject moving with a constant speed in a straight line?


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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 acroscbfl47+g; wvbwr zb(;s the floor for 10 seconds. What is the acceleration of th+;;rl cw7wgbz b bv(f4e toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes th x7eohg5eopypx30g*2f3wlx3b4 5r fge motion of a toy car across the floor foegx0 *eppxrb4 g 3h5yxof f32g5l o7w3r 10 seconds. What was the total displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the mol,ipua2(zo );kqu l2i bt. (bztion of a toy car across the floor for 10 seconds. At whoq)up zt,kal.i 2 l( ibzbu;(2at times or time intervals must the net force on the toy car be zero?


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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. Whicx2k5n* a..g1hnrheq pd. ct7hh one of the following choices best represents. tx1pk7r cdh a*en.h 2g5hn.q the acceleration of the car?

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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 shownzna0u m8d7vk 1ft7 *ut. Which of the following statements regarding its motion is NOT CORRECT? dn7tza m7fktu u*81v0


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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 velocitdg3z; 18nf* jh fpqn(5b)uoj by versus time curve shown to the right. uj*dp1n bn3 b8h5fqfz)j(g;oWhen does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of time, ad0vrh7 5 -h(f fr-hqto tennis ball is moved so that the angle between the velocity and the acceleration of tvff orhqh05r-(dh7- the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this interval of time?

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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 towes h 2)so );/2gpgeyr97 jtkhaard each other./gk )t ;9opr2 7hegsah)2sey j
is moving at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.04: A particle moves on (g quptclib68 )75,;ls ddjmethe x-axis. When the acceleration is positive and increg,u ql(l)7im;sj dpbdt 865ceasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average qz :innhl7j*0iqjb d lc x m-yt+grqf(39 /5*svelocity is

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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, v99t*seug +oxs8hr vgj6cr (, which one of the following choices identifies quantities tj8 u rx*ts99gso6c,hr(gv ve+hat must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car mov:p4-pt6qum qfes $3.0\;m$ 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?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.05: The position-time3pvy*v)a d2ncez*u r9 , $y\;vs\;t$, graph for the motion of an object is shown. What would be a reasonable equation for the acceleration that would account for this motion?


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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 foh(xfp-wa); wv r total time T in twwavw ;(p f)-xho parts.
• 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?

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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 stctz;,e 8t) 3riy5 wh8)sl pn- bkdnw,traight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts at origin8e8rdbykw))lt t,5;nnp st,3czw-hi $x=0$. At which time is the car the greatest distance from the origin?


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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 mj- av5wse/ +mkj50qpjotion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that theaqk+ psmj5 0evwjj-5/ car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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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-f)mmc 8( y2 uloc8tlm given by the position vs. time graph shown. For what time(s) is the speed of thtmmmy 8l -8(u2o c)clfe object greatest?


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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 velocity.9j tg:oa-p wy vs. time graph shown. For which ti.a:- tywg pj9ome(s) is the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing th 8*dpj8 yy7move area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity*jop m y8dvy78 has been determined for that object?

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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 () o my1(htxatincreasing speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a trip i); e*ss ,xp9toviy1wf n 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?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is rel, bheydrg8z,e b9r1a x;x m*9seased 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?

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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 reo 9a9cl36ap( qea5of-r n6t ztaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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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 ho:9 0 +b uytps9r yw*00plyswuga ;/olfrizontal axis is shown. What is the total distance traver0o:u0* gbla/ly us+yp 0sw;wy9tp 9fled by the particle from t=0 to t=10s ?


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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 the li iqe3 9-zl2gt7ape+ z6cxmjc-sted situations for which there islac mgez+e7- tcx-qj9z3i2 p6 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.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An accelerationt08 cu g()zswn vs. time graph for an object moving along a line is shown. The object (g)ts0w zc8 nustarts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its starting position?


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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 vs )t *ygtscaw wu4,*jb9. time is grapw *c)ut9gta ,bsy*4 jwhed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving away from the origin?


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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, each with const- 2f u*0qd.cezgajax6ant accelerdqg ca-fu2 *e6z.0j axation. At an instant 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?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has av)z e)j(( n,hbuy*9iv15 cux1 sps owd 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.

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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 graph1l 4wn v-:rgdk 2c1zsb, which one of the following choices correctl c-zlr:1sw1 v4g2nkdby describes the relationship between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the folloo7f5;zl5-c n :hf 2 9ummkjohjwing choices best describes the instants of time, at which the car and truck travel with mo5o9-; ufczhlh2 7nf5mj:kj the same speed?

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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 willc89 :c mdclmm+ move along the x-axis. The acceleration vs. time graph forc dmmc9lm c+8: each car is shown. Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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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 obj4zylv b l ,cb1q)6rsjj,oq3 i0ect moving on a horizontal line is shown6b qc1v43b l,jiz qy)r,ljos 0. At what time(s) is the object moving with its greatest speed?


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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 followinug;d2mb 9 6ccrg the position vs. time graph provided. During what time interval(s) does the mass have zero;9umd62bcgc r acceleration?


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