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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: 匿名未登录  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 hcp0/03e iaz enam6 7iat a constant speed 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?

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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 reference to a /qj t )if+mzo;particular diiqt jz mf+);/orection 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 lapj6y 7jc s2.cwy around a circular track at an average speed of 50 m/s and th 7 2sj.jcw6cyyen completes 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 m in 1.0 s at the constant veloc(-u 5pwlg1i3( tzyodtity. If it continues, how far will it travel diy 1t3 5o-zpw((utlg 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 isr*wzf + boimoo;.kd :fc ll,+, stationary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionl *loo k,mrwc,i ;fbzd+. lo+:fess 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?

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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 km at 80 km/h and 400 km at g6q 23pg x1jr)unbhz(100 km/h. What is the average speed nub6z x1qghg( 2j3p)rof the motorist 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 1+*rh ynjztq fk7)de 1motion of a toy car traveling along the x-axis. The graph shown below is a plot o)qejz1*kdh rn1y +7t ff 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?


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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 t0fgp0m g(*kb+thz lx* he motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s veloc*lmghf*gp+x( z 0t 0bkity 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 motiwk.np 1*cxl uc3: wb a/:y8gwion of a toy car traveling along the x-axis. The graph shown below c1aycp: kbux. lwi8w: gw*3 /nis 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 graph of the velocity vs. time of a duck flying due s: h 6pnx0yj.qfouth for the winter. At what point did ty j6 n.h0x:qpfhe duck stop its 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 ref0 icvehi1.u 3cizvb9x7yel 4(er to the diagram 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 velocity of the car during i yxizv9i14.bhu e0cvce37( lthe 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 below which shows the positi4i) yzsfbcl 2lsm;;7g on and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The avcg4ls;s;iz7lfm)b 2 y erage acceleration during the entire 3 second interval is 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 for an object with the pos*r 6vwm+2wroy3/ ;cz5vuqtxz wb 65lh:4nk ph ition time graph shown in the diagram at:r/k3qoh5m6wt h42lwv; 6 +w*u nvz yr z5xcbp right?


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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 question refer to the following informationys wt(4u1eec7. An ideal elastic rubber ball is dropped from a height of abo1 yw(4ee7utc sut 2 meters, hits the floor 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?


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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 followingoz1cy 7g 3*qze/jga p qh/9lp8 information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originggqeoq/3y czh9/ p*a1 j7 pz8lal 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 withdp61flqzrf0 ;)i 4rqc 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 k)brhzg -h+e 8scenario: 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?


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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 followinr 4k of7t /rpkoo :4rc:9+rxrkg 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?


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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 refers to the following scenari*dkg (44ux5mrrvpx;v o: 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 following s .4sd3 k8ydxdc5ekcn: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.
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, acxup -zj*-3syif;vpq + ross a horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude o *u; +pvx-yqjizfps-3f 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 between u82h; nr 6uomjdistance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 secon;j8nm ro62 uuhds?


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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 the relatio8dkxkxci 65 ;mnship between distance and time for an object that is moving along a straight linexxi d8k c5;mk6. Between what times did the object have 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 initib u4cetgne4-97yhidpy0n8: q al speed of 12.0 m/s from a positi:c948-b etnn7y4 pu eiygdhq 0on 10.0 m above the ground. Ignoring air resistance, the speed 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 and uniforml x+mrbt-uz8ul1oo+:/5nsy m d/yf3e c y accelerating across the floor. The time and distance traveled from the st+3 ermcmx/bsn ooy t:5u+ zd-8/lyfu1 art 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 ricp 3hys 90p:vepresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the sta :p9v30hscpiy rt 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 cd ,.kgnrb0glztr/u:dc 0r a()ar starting from rest and uniformly accelerating across the floor. The time and distance travr/ a(tb .0lu:,0 g )dkzcnrrdgeled from the start are shown in the diagram.
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 acceleratinclj3 ht8v8uf tqh6+o-0ab yf+g ball. The position of the ball each second is indi88 h +0v+o6ybqtc- uh3 tafljfcated.
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 of t2tbc/bxsn8 4fv(wv; the ball each second isw(vn 4 vbb;fxt8c/2ts 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 ye-a .g6j) -npd2fm pca circus clown on a unicycle moving in a straight line is shown .jd2 n acpf ye-p6-m)gin the graph below.
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 m dnuk).y7fs*clown on a unicycle moving in a straight line is shm 7k) *yd.ufnsown 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 surface of the ekxp)jj sh**8sarth

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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 ofpo- 7wnlm /p(k a marble on a table top for 10 seconds. For which time in kmo(wl7p-pn/terval(s) did the marble have a negative velocity?


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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 s9bu qk4.x0j3i - cvp4a,s bfhpz) v;pgraph describes the motion of a marble on a table top for 10 seconds. For wx ics;4bkf,pqp3s-9 4v.p abvj0 uz)hhich time interval(s) did the marble have a positive 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 descrivgu1 / y jbf:hl8)j-lgbes the motion of a marble on a table top for 10 seconds. What is the marbles average achu1jg/jl)f- gl v b8y:celeration between 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 fr(qa3 u5muuu k ,eztoi6.gh8 h6om 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 straight dr7zr r tb75pd3 20woogownward 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 cop 4hvc (vml8mp*fzp( o )rhd658 bi:sarrectly represent the motion of an object moving with a constant speabm6z)rpl(vo mph 8hc *4isv d 5:pf(8ed 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 tl47f 7c,sqazkoy car across the floor for 10 se7 f,l4a7zqskc conds. What is the acceleration of the 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 the motion of a -uwysbe4d +w6toy car across the floor for 10 seconds. What was the total displacemes bwd6e y4+-uwnt 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 motion of a toy ca 5+hfcew7 8omww3ih2t*2j /yyc w2nwor across the floor for 12 y nfweywj2w+wcw3mc7 /ht 5o2*oh8i0 seconds. At what 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 60ku pzrwh8jxt ,.3y9 s+hw jt(3 km/hr in 4.50 s. Which one of the following c ,z tt+ 9jpws3 8xr.hwkhyu(3jhoices best represents 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 veloc:n ;/o kbt9qssity versus time curve shown. Which of the following statements regardi:b ss 9qkt/o;nng its motion is NOT CORRECT?


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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 tp ,ui,o c),5; *s xc8jkihpmfnhe velocity versus time curve shown to the right. When does the car have zero acceleration mc;fc,jo5 ,*iups)xkhi n 8p,?


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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, a tennis bal,6 kqhwr d, *qk5toep2l is 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 aqk,t56q or2hd,*kwpe bout 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 towardb;+ vkb6qf4 sryy .7ih each other.y b4 h+v;yrf.6qb7kis
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 the x-axis. When the accelerati -b i ltjuyvfo2px :; v3187lo0c*shvyon is positive and increasing t b;8vslfihy7 1 0v3 -lo:uvyoxcj*2p

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitionggba m67du(6e of average velocity 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, which one of tht m,uwxiq 6x2 0(0 zgxmcw65ake following choices identifies quantities that must have the same d(w0wakg6xmcit xu2 56xq,0m zirection?

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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 moves (,(eo vqv(fshpg .5 bh$3.0\;m$ 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-timph,o3*a runj*hej6;cy5dj * : vu 3 gsx:ws-vve, $y\;vs\;t$, 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 for total t3 yh)nzfx1c :pu79q rhime T in two partp)z:1yrxnhhc9qf3u 7s.
• 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 axve+ 0:-6;v .;mrbc na l+;tvp9huixgwe4im v straight track is shown in the diagram. The thick line represents the velocity. Assume that the car 4e6 wpcin.vm0ev:xat v u;xmr ++9higv -b;;lstarts at origin $x=0$. 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. tit4tb50 (+wxgjx wbre-*f p+ohme 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 starts at p(t +xt5wh * wer+ oj0bxg4f-borigin $x=0$. 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 given by the position ve qnu3+16q ioys. time graph shown. For wh +1o36uiqy neqat time(s) is the speed of the 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 n n/ 3 vfa/r uhlcmr4 -(jin;z,pj,r/uthe velocity vs. time graph shown. F -3,vul n/nrcj;/z fri/ h njap,rm(u4or which time(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 the abypimcwz ) 1mivj :bc6(,6:narea under the acceleration vs. time graph for a fixed time interval of an object’s motion:,aijyi : m(6 c)6vbcpwbz nm1, what quantity 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 horiz4)8kb0ol: /cptggju+ 3ph maeontal line with increasing 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 in two parts:k *bues: ev wkpa:9t8bgya,4*
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 released from rest a1 lrfcc0 mt z-a.*nxc8nd 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 reaches the ground in a tij h :dn5ko1wy u7qj+8dme 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 horizontal axis ) ur.( x+ 4oqdy6so29mc 5bvg9jwa uonis shown. What is the total distance traveled by boc49v mux nrqgjyo+d5 uo9 s()2aw.6the 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 followe q+yn23n.zlr6irte, ing choices correctly identifies all of the listed situriz+ee yn.n32tl 6,rqations 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.

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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 al4 nl8w(amupis ks7:u, ong a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its spsls wki (n4 8amu,7u:tarting 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 t+wbgnesr-*i;:/u bm a line vs. time is graphed. Which one of the followinit-m b+u;gnr:e /b *wsg 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 w,.y :txoktlhe* s*:x- gx5ypx ith constant acceleration. At an instant of ti:.xgx- xhle,: pxysy5* k tt*ome, 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 a posvm (p;(rv*oal nwdrwx3tf/ 2 ha5 0s1jition $x$, 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 graph, which one il+v 91of). 87q qvvp1fu:kpyva- jl vof the following choices correctly describes the relativq:1).kpuq 1vlvp fo+i8vf vaj- y9l7onship 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 following choices best desf anx8xi vv/y+8c1 6zzcribes the instants of time, at which the car and truck travexa8 6niczv+f8yxv 1z /l with 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 fromejd 43 ha) nbf oubudwe4gjl) s+:.zyia6o9*9 rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Wh4gi aw*fo a eju)syb :und+6e. zdb)jl39oh94ich 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 object moving;9fa tiexfp, y90:ben on a horizontal line is shown. At what time(s) is the object moving witf,;t9 09ne abifpxye:h 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 following the position vs. time graph pb7c- u b)3lcylrovided. During what time interval(s) does the ma7y ul 3)b-blccss have zero acceleration?


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