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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 at a constant speed ar*, /pexvvb5 ;t gyewi/ound 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 ac5- szml(g u.l,-f sqreference to a particular direction is ca m5q( ,al-fc- lzsug.slled

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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 l1tv2pw +as 0prap around a circular track at an average speed of 50 m/s and then completes a p t1+arp2s0vw 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 constannl2s2jn m f+pmd9:zjs2q 33qmt velocity. If it continues, how far will it traveljjz:lq m3n39+d fq2smnps2m2 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 oujd cxa( 35 p/:nagib6jk;(w stationary on a 30-kg plank that is sliding at 5.00 m/s to the right acro5ja :i(/b u;ck 6doagnpx(j w3ss 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 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 100 km/h. What is xxb)qhibjn8,g+ 4q 5tt 0r7 lathe aveqq8xthb,jn7b0)4 l5t+agrx i rage speed of 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 motion of a toy car traveling along+w kgn:t8- jvfc1 x3tc the x-axis. The graph shown below is a plot of the car’s veloci-tv+3n1:x wf tckjgc 8ty 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 the + n(:enzs3upl/-me gxmotion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x di:l-g(+xne3e /pum zsnrection, $v_x$ 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 o( ip;pq9znrv, f a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction, p9vi;r(q,pn z$v_x$ 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 ved0 7 oy m)mot;2,wk yxcvljsw s7.a0s-locity vs. time of a duck flying due south for the winter.omcj7ts o ;ws) vdsw2xmy0 -7a0kly,. At what point did the 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 refer to the diagram below which shows -qo basp5;yx* 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 the ; qo*pxby-as5third 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 diahna (d tt04 qo48sfo7ggram below which shows the position and elapsed t4qhts4 g07d(afo tno8ime of a car starting from rest and uniformly accelerating in a straight line. The average 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 shapec bh34tyqw5ys7 jy* m9 of the velocity time graph for an object with the position time graph shown in thejcsm*y q y 594thb3yw7 diagram at 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 followz:rd-8- gmyu ur m,ia6 td:8taing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and reb udr8dr8-gmaa6 zu :m-i, y:ttounds 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 informationkw4ob6.9 rsxj. An ideal elastic rubber ball is dropped from ajs4b o 6w.rxk9 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?


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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 with a ztwhch,fzo 2) l1l.3f 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 foll(d))g0f lehp 9 njjig f,nc*h:owing 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?


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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 scenarixb/r;m0,ox 6lz h e*rghnm.1to: 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 ta2e;x0flv3 sphe 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 following scenare m79o1d hg.si0b14hci; dp pu wwf*x9io: 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 horizortcl 3b- hzb-o5nv; a3ntal table top and off the table edge. Which of the following would best represent a - o3bz-3;nah t rbl5cvgraph of the 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 repr9(zbso:f*bb em(qk 1qesents the relationship between distance and time for an object that is moving along a straight line. What is 1bqqfokbz(s meb*:9 ( the instantaneous speed of the object at t = 5.0 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 represen2cs:rlao7f3j qr5, hats the relationship between distance and time for an object that is movfrj5a2hr 73slo c: ,aqing along a straight line. 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 initial spo 8di em wr du/fj2od.0-w(h/ceed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, /dcmh8e j/fdir owo2 u-0(dw.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 ca- mpo. cobmu.6r starting from rest and uniformly accelerating across the floor. The time and distance trabpo- 6ocum ..mveled 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 ea*bff .p-+- qj(k vzrsj/ni4a toy car starting from rest and uniformly accelerating across the floor/. -4 vz+si-j*a b (njrfpkeqf. 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 sta vgr8 i/ev(4/jl3hhij 6fh e9lrting from rest and uniformly accelerating across h vle96//liv(hg3e4h f8jjr ithe floor. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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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. The position of the bow8 mz4l:rr7 mwef7c *( qqjypwp7- u,phq;9nall each second is indicate87m;rj: ly, cq-f q ww7prqh9( nmp4ow*pu7z ed.
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 the ballu0 *dru 4kze h(ocatp 03v2r5t each ckve(updzo04hrr 2* 0t3uat5 second 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 on4z +/zdx bzavs*yh kt5 fq6phc3 gv +rr8)q4f3 a unicycle moving in a straight line is sh s ych /+pr6hq+g*rt 4vbf)3a3zd4qvz 8zkf5xown in 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 clown on a unicycle mov2wrv m2a bux yo.,d4a8ing in a straight line is shown in t2xayw a mu82b.,rdo v4he 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 f/r ,6 4elq7l.wup8yhz ;noaqjalls freely in a vacuum near the surface 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 gd u lb7tgm3(rqdc.5 ,:jiy6ws raph describes the motion of a marble on a table top for 10 seconds. Foywt7:.ig ,sb mj crl6duq5(d3 r which time interval(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 graph describes the motion of a marbl 35 (7- e auo-vdz9ipny traug+4mgdt6e on a table top for 10 seconds. For which time interval(s) did the marble have a positive acceleratig 7 zut+6d9p a( ruo43mndei-5yt-v agon?


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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 0eg9rdgf) vg/the motion of a marble on a table top for 10 seconds. What i9grg)dgfv 0e /s the marbles average acceleration 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 uni k2w+4:wjzsab+oj nnvf o55b5formly from 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 s.dp8mp1 motw *b2d1:(nb s bdttraight 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 correctly represent 1 -ezn (ug8mkg0my9hzthe motion of an object moving with a constant speed in a straight linz g9uhmge1- z(m ky08ne?


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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 a foon;p/;2 ffucross the floor for 10 seconds. W;u2fono f;pf /hat 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 descra o rwc)t 8hrjz+;(p; 77fqmly:rmfk:ibes the motion of a toy car across the floor for 10 seconds. What was the total displacement of th;rm)qjyao pm; :77 :rrf8tlwhzk c f+(e 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 car across the flooj ,n s)l5 bigi3aid0krt9dbaf8z* -;mr for 10 seconds. At what times or time intervals must the ) 0j;l3ik dib-zf t,a r*m58sng9daib 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 tcu,yp pcc 3(*gn8v y/wo 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleration of yp*( p3,yc/nwcg8c uv 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 shown. Whogx h oy830lg*ich of the following statements regarding its motion is NOT C 3 *og0lhgxyo8ORRECT?


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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 59yn,cfofr)l velocity versus time curve shown to the rightoy 9,f)5f crln. When 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, a tennis ball is movig3bhis(m0 8ik pw /6ped so that the angle between the velocity andwp08 6h kmp(i3 gb/iis the acceleration of 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 towasx83g -et kql5rd each other.tlkg8-5 qe3s x
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*f c3:3* egv cihqx t*4ctx2er-axis. When the acceleration is positive and increas**eve 23cth iccgq 4x*x rtf:3ing

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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 averafocyh w*1:zx 7ge 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 the7+r96g:xymdo0,9 h beir nlbm following choices identifies quantities that must have nm reybglom : ,969x 0ibdh7+rthe 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 moves tk5(d+0t niwybg p/6n $3.0\;m$ 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-n+ d.,yvcqwa :r0m wghvpj:6: time, $y\;vs\;t$, 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-dim2 i,mqkp7p jw/t d/bd0ensional track for total time T in0j27tk, b wddmiq/p/p two 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 stjf(,ia +pe*i9bw1vj eraight track is shown in the diagram. The thick line p +ea,i 1vew(ji9jf*brepresents the velocity. Assume that the car starts 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. time gra6 kq)iwtvmzr8+k k61iv c dy25ph 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 origi5y) kwm8621dc+ zrk qtiv6kv in $x=0$. 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 vs. tiib1 aj.d- p.s c (rd87mhiggo.me graph shown. For what time(s) is thgga. md8.ods.iri (h-bjp 1 c7e 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 obla zh )lfi39f-,z1vuj ject given by the velocity vs. time graph shown. For which time(sf9-,j) fvulzz 1i3 hal) 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 area under the acceleration vs. time graph for b.,2 th5a mj;p *+uxienm qw9da fixed time interval of an otj ;5qm, ap.i9 nm2+ h*ewxdbubject’s motion, 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 r /uz0* -degiphorizontal 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+r-f s2 m3b q/vsaa7k i2;hgcc trip 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?

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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 fromke n/n, f2:ouvfb.zz sc -+vc( 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 kjvz l1tp3 +d o 2+fsrtjbq:uh3y(:4c reaches 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 horizontal axinqnk+xo5r(j3oyuu f+cmy )0 5s is shown. What is the total distance traveled by the particle from t=0 t(n x3 +qycnfr ou j)m+uoky505o 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 identifiesch gk82+e 5els all of the listed situations for which there is a nons+ 5hlek8 2egc-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 n6 abj2(4nbzuy3yde0object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does t(eyz 23nn6by dj4 uba0he 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. tqb7ehw.*n x/g w2pi ;xime is graphed. Which one of the following choices best gives the proper interval(s) of time for whi2heb*/i w . pnw7xgxq;ch 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 constcnr6tmnf29 -i4t 9yzec 0)qzn ant acceleration. At an instant of time, the information about the ynrz-im) 4tnt qc0f26en99zc 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 hansmi jynv)8+)9x05 aq2yhxa( kra ab)s 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.

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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 isyt 79pzgz-8 aj+eo n.n the graph, which one of the following choices correctly describes the relationship between the average speed of the ogse-8t .+yz7pjanz9 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 thez, j vo*dq8a,l following choices best describes the instants of time, at which the car and truck travel with thev 8qlz*joa,d, 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 o/j w1ug l,flh:;0/ae6h26f gatz gej/q:lu rf rigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices a l ef60hu f/1 lhgagq6/:rgzj: tf/lj,uew2; 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 on a horizontal linerw7r yhrk 7f-n6ao4j* is shown. At what7or74j r*ka6 hrn ywf- 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 following the position vs.9eo jr ++ojnm/gmk a-0 time graph provided. During what time interval(s) does the mass have zero accelerati +gmar-nome kj9j0+o/ on?


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