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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 path of radisb/o cspqi1r* k-gs ;,us $R$, 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 withoigll(n-j t.cq y f8d9,ut reference to a particular directiy.t8i-9lfdc jl n(gq, on 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 cezw dqih(z2qd5 ;0tll2 g ph 92e3pi-one lap around a circular track at an average speed of 50 m/s and then completes a second lap at an average 2q2h5dltidqhez0 i3 gw-2 pce;(lpz9speed 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) b /jyj67jiay 1.0 s at the constant velocity. If it continues jyabi6yj)7/j, how far 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 stationary5u0 x2 ae2j te8jg0pyifen 4 qk+rx0/h 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 plany2uj/e +inxpfq8xae4ej5 k2t g0r h00k. 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 h*qnh kc)40q7n tez bd1eie6. is the average speed of the motorist on this trip?1cq67nzeh h4).* itk n0e bdeq

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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 motio3yd (h3p :pzwk7;f5oymu4 tetvdg ( s8n of a toy car traveling along the x-axis. The graph shown below is a plot (; :p(7wep dyvzt5m8ds 34tk3yf oghuof 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 the motion of a toy car traveling along thex7ho3 ji.pib39 ,mnv h x-axis. The graph shown below is a plot of the car’s velocitpi i 33h.xho,v bn97mjy 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 theqe wo)m1c oa+6 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 direct6moc1w e+ oqa)ion, $v_x$ 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 od(hz1mkrk8/ eqbb+ .9 s)nlo the velocity vs. time of a duck flying due south for the winter. Aokd sz8./en1h(9o+lb b)qkmr t 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 the position and-nok) avrn-gv +kpt) + elapsed time of a car starting from rest and uniformly accnk)-v-vng+krp)t +a oelerating 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 belowofr2 lmk/n4/mbp zs):(e/s o)bpqa0i which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The avera/bo zk n/m)e)sf :m4b(/olirqs p a2p0ge 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 pjv5pr83: qxy1eun m- eosition time grap y:njxpum-e3581rqev h shown in the 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 following information. iqoh7k y a8*eg/:z84/ bsrcur8 a4hcaAn ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its orgq7ceoaa8 84c84hz hr/sb/ aikyu*:riginal 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 questioh+xpj jpp:/.lbcl fn wi-5 c2)n refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 mc5jp hljl.fw)x p/ bipc +:2-neters, 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 speeydsyui e -p3hx11e+u)d 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: At/1bm 4wtym/ muc2* e3t+m fn1 lybb.hs $t_0$, 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 re/ nzr :u8d*u c+i7ymsffers 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.
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 scenario: l9hn2jsmn )56x a)ggfAt $t_0$, 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 sce/poj x lk2)7 x,sq.li2(uns urnario: 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 mp1jh8q* 9yrd down a ramp, across a horizontal table top and off the table edge. Which of the following would best represent a graph of tr8h9d qpyj*1 mhe 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 betw t+ajoy 2 l h:xn,:+j5iy)lswzeen distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 seconds? z j+ jtnaoishyxly ::w +,52)l


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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 relationship between distance and tip9u0 yk.r/,6tkhcdbqnzsdk 2m tk60)me for an object that is moving along a straight line. Between what times did the object have a nkrt 6 6z 2m,ch0/qbu nyksd09)tkd.kpon-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 a*s,e zy+d8uxt+vh a2vn initial speed of 12.0 m/s from a posite v+svt,y+z82xa du *hion 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 rgxxbr (v4s2b( est and uniformly accelerating across the floor. The time and distance traveled from the start are shown2x(g4s bbvx(r 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 car starting from-upr42zog ai (k4rp: c rest and uniformly accelerating across the floor. The time and distance traveled from the stari prkpg-ou24r:4 c(z at 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 uniformly ac:ou(8yi ad f1ccelerating acrou: o1 a(iy8cfdss the 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 accelergu 7o30isbh1mlef 7f2 3hej 0uating ball. The position of the ball each0 bu2o17se3ffgji3h7uhl0 me second 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 scb5dvlbtnc51x0 s4t9re 4 w8hhows a uniformly accelerating ball. The position of the ball ealt e hw558b4s t c0d9rc4xbvn1ch 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 clownv)ra mu6 3jmu2 on a unicycle moving in a straight line is shown in r3j vumamu26 )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 /he(gof 1py1k on a unicycle moving in a straight line is shown f/11y gpkoh(ein 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 free v ;tif0-cz-d .zd.*vsnyw3knly 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 graph describes thx)34:b6pkn wwhdwh 7 o29suove motion of a marble on a table top for 10 seconds. For which nok32swhpxbw6) 9v :74owh udtime 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 de-sut0blb 4 i5do 0kbw;scribes the motion of a marble on a table top for 10 seconds. For which time interval(s) did u bbi54w ;0bto0 s-ldkthe 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 describes the mqceze) +xm6z (5 vp,wyotion of a marble on a table top for 10 seconds. What is the marbles averag,wqz (ec+ypx5 z )6meve 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 unifc e7a: r4uo2.x4zc4vbh yu gs2ormly 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 straight downward with ad4muir.urny1x6 ws99*j -nga 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 followi7 pccm +kort93g0rcp ftwy+/- ng graphs could correctly represent the motion of an object moving with a ccwfym9 krpt0 73+r /tgo- c+pconstant 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 toya 1*30mel o1 t*t(siebyipo 1r7vn ,ju car across the floor for 10 seconds. What is the acceleration of the toy c i37vtu1jae * 1o *bm1ei,to ylprs(0nar 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 toy car acd ua2;b1-t 2hdcq;:5wcc u5sgekh k/jross the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second interval shown1;w hc djgb:5q2/e;c2s- ukdh5at c uk?


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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 motionf bv7nsj,xsom(.-y 1 g of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on t-1 m ssxbg (n7,vo.fjyhe 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/..n x prsd gv/rksua0489j( eshr in 4.50 s. Which one jsrgn 9(8s v4u0skape d.xr/ .of the following choices 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 velocity versus time cuzri4gmgsuc 29i1q1e 5rve shown. Which of the following statements regarding its motion i49 qr1mz i2c1eg5gu iss 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 xjeux7m v- 6ouu, :wok4-axis according to the velocity versus time cur7: xu m,ueuoow4kv j6-ve shown to the right. 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 te rq5/qo e;whi;nnis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constwhe; 5/;oqi rqant 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 apak1i,mo, hmla1 rt and traveling toward each other.l ,mim11o ,hka
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 o4zoh aar1 73ffmoiz *,n the x-axis. When the acceleration is positive and incrfoz,r 1zahf ai*3 47omeasing

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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 v ksswd s5 jjb-8 w/wlw(o6l3,yelocity 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 defd lo0i5giqg/ -th t; fhj bc*ui+6z-f-(8kgimensions, which one of the following choices identifies quantities that mustggz/uf-c+-kl-g ; o(ii dj5hqt8bi f*eh 6f0t 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 movenht,xmm4 sp.z v9x/) u9yta *vs $3.0\;m$ 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-bg,j*m:9 k:yiy fzax 8time, $y\;vs\;t$, 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 traqqtbj4f/jvxm) g*. 8f89v6 h izy1itock for total time T in twti omq qj 91/hvz*v 6.j8by 8if)4gtxfo 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 st*f71 b jp/l *sy:werqtraight track is shown in the diagram. The thick line represejq/bw*s r*1yt:l pf 7ents 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 p8n(lg x: 0jfrgraph for the motion of a car on a straight track is shown in the diagram. The thick line represents the xg(8rf:nj 0p lvelocity. Assume that the 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 anx -f1 nsx2g3fm object given by the position vs. time graph shown. For what time(s) is the speedfm132snx g-f x 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 the velocity vs.c cd51self 0m*gj hz1qx5m- ;p time graph shown. For which ti1lmjc0q1fz ph sgmex5 -;d *5cme(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 area under the acceleration vs. timug ;v9md,bbw,a ge8k1 e graph for a fixed time interval of an object’s motion, what quantity ha9 kwm18g;ve ubgba,,ds 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 movesy dmrv5wn7 9q, along a horizontal 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 fa q0fn8 t,e0v1)e1xg2l* wwqieko4z 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 from rest and reaches dn)v+ hs- f,b -mhu8hk4wa h0g6xs)xr 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 reache88:9q .or zy), gp dew4vestfas 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 ea1mjd r znrvvenv )z5ilr/h2;30a2/3kla9 kalong a horizontal axis is shown. What is the total distance traveled by th)z;/var v9d1k/ 3 0lm rnn3za ki er2ljh52evae 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 liste6:,z ptq.g v1lsh(uc ed situations for which there is a non-zero apc6etqsgu:(v 1 hzl,.cceleration?
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 along a line is:gg+s w2rf1gt z9q/vs shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from itsfgwr2tg qszgv/1:+9s 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 0z/nqsdq(hgdlt: m0 bbfb29/its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper intervad (b/2f9dl 00htbq/ :mqbgzn sl(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 co4w gk c5qsqu:-+k0v 74u gpgsenstant acceleration. At an instant of time, the information qge g+v7sc pus:50ukkq4 wg4-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 positi3f -;-9fri :yz nqmfepon $x$, 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 gk3s:jbyo6 yz:d.gj y pinq +1y 0s6z3in the graph, which one of the following choices correctly describes the relationship betws :nipqbg3yd 60 zj:.ykysy3g+ 16 jozeen 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 describes the instants of tim-f* egrnq5pv) e, at whicqrf - ven5g)*ph the car and truck travel 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,o 5ofd;1i g5bjjl;hb;qb3qy+ each start from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationo;b 1 gbj 3oib5;+;qqf5dy jlhship 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 4k ih 7*xik zjz,qf7b8object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest speejzh k4qi7zfi,7 *x8k bd?


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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 provinh b15) mjppjj-/p n(w44 w 0y;mmhkup8tfdp)ded. During what time interval(s) does the mass have zero acceleratt8f nym4j5 jp p)bm )(w;mwph/1up4jk 0p-hndion?


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