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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 ar/uu ef)f7g v:6ou7 s zn7nyclyb,;.woound 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 particujb 6s7o0)h7fqpg g; iglar dir;h7)ggq0 i7g6 jpfsb oection 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 circulejd .h341*h rjp0qc tcar track at an average speed of 50 m/c hd.rh3ec0 *pjqt14js and then 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 velocity. 9((f6 ni+v xib*l9q yeuzj*b uIf it continues(ibev+ uf9zlu*nj(q*by x 9i6 , 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 stationarybhz -eo/ m q)xz6odm)xjha1 18 on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then tur) jxq 1m-16axbhe)dom z/hzo 8ns 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/0ucmahwdx p:.bk 2wi8* ) udh3h. What is the average spea.h:8x0uh)2kwwb u*d d ipcm3ed 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 racw72 7()nvjvu:am2n dmlt51mp9ad h efers to the motion of a toy car traveling along the x-axis. The graph shown below is a plot pj7:(7v9 vd)mwnaat2hcua2 m nm1l d 5of 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 a6ja0 z*r0 j8 gdhgz.ap5p ni b/4reo)3z.qultraveling along the x-axis. The graph shown below is a plot of theal0u gj54zp3zrazr0gj na. q8d*6 ) o.eip/hb 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 3e up0:2gk rwithe x-axis. The graph shown below is a plot of the car’s vei023pukw e:rglocity 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 veloc4)kpu;dsb; izl ;p 9owity vs. time of a duck flying due south for the winter. At what point did the duck stopkp;lopzb )i;s 9u ;wd4 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 positio , e*v2nib goz5sao*u8n and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocza*,2ogse* boi uv8n5ity 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 tu 7 rtbqlf43dw9vnpnpa +09i)he diagram below which shows the position and elapsed time of a car starting from rest and uniformly acce4 wlr i p)909+nqnf7uva3 ptbdlerating 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 shw.n ;nx)bndo 4xhp.0bape of the velocity time graph for an object with the position time graph shown in the diagram at rightn0bpx b.4;hxnod.n)w?


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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/nq3*rp ad wg8-z zv96 omfdv4. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originaw 4pavn3o8 v *zf-q/mr9zddg6l 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 iuc 2olg/)1iato the following information. An ideal elastic rubbl12ui g/icao) er ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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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 wi+)x.wovyfa -5pp.ucjb p8owg jp 1o) 9th 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,q uayjupe31ms9)c v7 cb6n,r 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.
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 scendtg 9a:3t 7m-ccx,xgv x6 hyn/qr qm/1ario: 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 res6l;w v7dt1 d 0hfeq0tfers 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 fo; +kn6me mcg9bllowing 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 c5i37nu ; *eeute f*/jqgsx3yl 7bn n+a ramp, across a horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's acceleration vs timjen3c7g5st ix3 +n/ybf*euq7le;*u ne?


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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 relationm p.kg2vej/ )sship between distance and time for an object te.m )pkv/s2j ghat is moving along a straight line. What is 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 represents the relationship between distanco: a(n tgc4:cqe and time for an object that is moving along aag o:n: 4(tccq 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 with82b dofch/jr(ei1 7 bu an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when itfcd(eou8br i7 2h/1 bj 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 startinp;o*(rxv lxg* ql18odg from rest and uniformly accelerating across the floor. The time and distance traveled from tl 8oxor1;d*l(x v*pq ghe 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 beln+:wl:aauo3a ow represents a toy car starting from rest and uniformly accelerating across the :w nlaao3+u:afloor. 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 uni)on(:i dx,a/v7rd b nkformly accelerating across the floor. The time and distance ,) do/ :r7xnvn(biadk 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-x27lhu01h*orz5l:i ad prqv of the ball each seconh zrq :25hldx0ai1r-p uvl7o*d 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 positf(jgi ,vf y+rs38x u/0rk oe:yion of the ball each seco,: /sir3fx(uyfj vreyk 0g+o8nd 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 unicycle moving in a straight lid*bg +gtbf ox7b641dsne is shown in the graph belowfsb gdxbbgt71 64d o+*.
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 moving in a straigh7z6 ca(jz n1bwgi16 yxt line is shown in th zxwi(a zy66 7ncg1b1je 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 va5hr6zjrj-snm8dlp zcgwp(0l ++o6 jjx +9 l;u cuum 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 the motion of a marblt 9 joc4 pgpol2r)/wk*e on a table top for 10 seconds. For which time interval(s4pgrt)9* pj/o2wlokc ) 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 g:ysydy.h a7 r8raph describes the motion of a marble on a table top for 10 seconds. .8yhds 7yya :rFor which 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 describes the motion of a marble7 sd)*z wopm4s7kdzm gare/;6 on a table top for 10g4es z;op s*zw/7 m7am6dd)rk seconds. What is 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 accelera; /y :jqp4n3jn z0aocntes uniformly 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 downwa zm0123kiilmxsu0zt1 rd 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 correcaf,1z azb-dl(tly represent the motion of an object moving wiz-l1, d fa(zbath 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 ut493aev2zmo.ssm2ub-wer + graph describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy cb4mw3ura osm+-uv.2e2 te 9s zar 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 n2sv:6- pt3.jjrwl sa across the floor for 10 seconds. What was the total displacement of the toy car r jnt6s av ljsw32.-p: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 tydxv6 s t5uc y j0;eol3()ls1b8 yf)knoy car across the floor for 10 seconds. At what times or time intervals must the net force on e 6f;ct( 5jyys3ud8k yxo)nl10v)slb 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. tzv,vf+8fm p2 Which one of the following choices best reprvm+zt f8,2pvf esents 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 velocityter 2udw3/pfovyrs py* n89)4 versus time curve shown. Which of the following statements regarding its motion is NOT CORREou 2)w/ytrn3 rps* pf 49ve8dyCT?


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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 velocity versus time,ne h)kej- el; curve shown to leehe- )j;nk,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 tennis ball nz,d0.nok+ ry is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement isy,d0rznon+k . 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 towdoe*h n3 7xuagn:6nw lp,, 7nhard each other.:*dxopn3h7ue n7n,l,g awh6 n
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 acceleration is positive and i0 t tnp0rh(a2lnc(hp20tl nt a0rreasing

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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 bc;9k9wg: j v62fdsxnof 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 the following choices idendr * arg*p tnqa jtfg5f:yh1pnk1(q7 v.2n**mtifies quantities that must have the same dir qata:g(q nn7rfvhr*1 tk1fdpm* g**.yjp5n2ection?

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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 +zf ivpduz k()f*ae. u4+g3iv$3.0\;m$ 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-time, ,*tz,du5:i0s4 -etysuk pvrg$y\;vs\;t$, 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 track00 ji wssdfj8(x94 aps for total time T in two p 0idw(j0ss sajfx849parts.
• 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 cab ti-d*/p1ys7 iwp7c yr on a straight track is shown in the diagram. The thicky/t1*iy cb7ppi7s-d w line represents 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 graph for the motion of a car on a straight track gkv 6iom9u:y /y65k.c*n.thc9epxgkw . bru9 is shown in the diagram. The thick linxw6g bk*up99.ykm 9k6.r:h.o c ve5 n/gcutiye represents the velocity. 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 m);9 -p :hy5dosj reok.0 mpiudotion of an object given by the position vs. time graph showu;0 jys5oe p.o):m -h9ik prddn. For what 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 t( gs2jf:c nq4dsx hdc z(0m,oyyn82 r,he velocity vs. time graph shown. For which time(s) is the acceleratioon gds f,4szr xc2:(y0 ,qcjh8n2dym(n 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 accelerationm lnxm(41 ub3 j3r7vgi vs. time graph for a fixed time interval of an objecvi uxrm g43nj7b1m 3l(t’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 alongzvluoqw3 ;id34*,yph * ttts6 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 trg*s9:xxtyd5 o ip 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 from rest and reaches th u(x/lwy ze4 8gu/xxj8e 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 19b6g9m bp/dt:r bv ib j kw)0cadc06qtime 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. t( fm,sl+fav e 0u.z/ol hoi62mime graph of a particle moving along a horizontal axis is shown. What is the total distance traveled by the particl 0if6a.so 2 ,(+/voemfuhmzl le 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 correctlm 8az1dxo8a3c y identifies all of the listed situations for which the acomdx81z8 3are 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 along a l09,egvqub 9ered6t - qine is shown. The object starts from rest at time ,qu9re b0vqdtee9- 6gt=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 veloc ncq;*on hx+g9ity along a line vs. time is graphed. Whc*g xo9n+h ;nqich 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, e;5 mhxaniknno0.o 33 kach with constant acceleran 3 oi 3ako;x0nnhk.m5tion. 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 a position o1r9t)j hv sxb (0f)y5 lth,df$x$, 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 2vehjm+g wb0:nvsv z9k0- i/hof the following choices correctly describes the relationship between the0 h/:mekn vjs0gh-2+ zvvi 9wb 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 r4r9t fg0u d:utime, at which the car and truck travel with the same speufd :0rgtur 49ed?

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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 star, x iyl grf4. qtuu62z,br5ue*t from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is s4.*,riub 2e5q, zgrfyu6xlu thown. 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 object moving on a horizonthc w1rs9((zg hal line is shown. At what time(s) i(s hr 9z1(gwchs 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 tdf3is 6/ef4dd)iw2 bj he x-axis following the position vs. time graph provided. During what time interval(s) does the mafdd/d ie6 2f)bij w4s3ss have zero acceleration?


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