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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 around a circular path of raa zk-qfo1--sjdius $R$, 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 withnvcvldq 0 q+(*yi/)goyiq . (mout reference to a particular directio)dv(g i 0qn +il/ mcqq(*yvo.yn 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 complw 9d/wpod ni6(etes one lap around a circular track at an average speed of 50 m/s and then completes a second lap at an average spe6(pi/9 o wnddwed 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 velo92 8nhwxtn.elcity. If it continues, how far winhx ln.92te 8wll 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 station -;h sxij2t:flary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. W ;2:-tjs fxhilhat 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 thws*f61au(w7 1kkbd6 c(w-h;cfn c o bhe average speed of the motorist on this tripnc bs kcaw1cob(-7w 6kh;*uffh16 wd (?

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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 motbxp tjv 9k*0fjz,)f6 mion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s v6xb,m*j k 9fj0zpfv t)elocity 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 ca.rn mizsl3c7q j-.3etg e k;q*r traveling along the x-axis. The graph shown below is a plomrj ;*tsce e lq.g .n3-q7z3ikt of the 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 reacd *7jo-rzw/;y8v ,jmcyz;+me t;s 03dwl snfers to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of ej /d cydlmzmtc-*nya sv 0;;,wszo8w 3r 7j+;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 flyingw8 k2szuk) fhz/ mgzz wjp3 +s)3o9ow9 due south for the w oo3jf+wk93u8sz9 zg/ w 2kzw)hzm ps)inter. 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 the position and 5v +op3 x.uwpx+yuha .elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was t+xu 3ho.x uv+y a.pp5whe 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 below which shows tho:r h rcjo as1vwj36p e*bd6)-e position and elapsed time of a car starting from rest and uniformly accelerating in a str- rpovw6 h3oe 6baj:1d*s) rjcaight 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 shape of the velocity time graph for an object with the posit ;dw -serb; p;to7q( 4j;rstg cwm*rk.ion tim-.tts;pqmjrkw ers(g7;b ;o*w ;c 4d re graph 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 question7 *whznec0j *z refer to the following information. An ideal elastic rubber ball is droppe0zejnc*h 7*zw d from a height of about 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 tqfb0 j;,)te luo the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounfe;b)u,l t 0jqds 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 trav;, m :u.pmusr. x)+7bzie-zlkvv ipv3el with 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 ttxqi0rgux 3 w362or iqqz./*ko 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 3un .y3s1.vwlwj2 mzm refers 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 zxo82hfi66 k0 9ntcd ebyb 21uthe 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 scenario: At ejbgy3hw r0 :5 p4c50h zohfk1$t_0$, 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 horizontal table top and off t r3i6uyf2air.he table edge. Which of the following would best represent . i3yrufair62 a graph 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 representiw/ 0 i rb4zld63,gy;j15pwdy eun1vzs the relationship between distance and time for an object that is moving along a straight line. What is tr /g1ndp 31;5zw vdy eb64uliw,zj0i yhe 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 distance and time for an+s)bs;bwp jw -g(v9*z v0bppa object that is moving along a straight line. Between what times did p;svv wb gb 0ba9w(z+s*j) p-pthe 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 straightix+ jt.d e6b 8wrx:e/v-r;xyk downward on Earth with 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 it reacbiew;e xtv.j6ry 8:-+d/r xx khes 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 unm-xe elxsk c o48);h(piformly accelerating across the floor. The time and distance traveled from the start are shown in the diagra8p elx (om cs4e-kh;)xm.
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 dt1 dlubp3uhv5 4z1dn+ xz-u7a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram. 1u5uz 4xu7 tdb znvd 1pd3lh-+
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 f+ d6t bnu j81umi+dzv7rom rest and uniformly acciuud 1b678zmd+ vt+njelerating across 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;3imtj(7wzjgjq ;g :o sxe y22 uniformly accelerating ball. The position of the balltx 3j;e m ji;w2jogq7:gzy2(s each 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 shows a uniformly accelerating ball.-s bgyf8 x-9h 3yottg) The position of the ball each second is indigyy3h os )t8x-t9b-g fcated.
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 c6dga am;6j2a6pt 3myrlown on a unicycle moving in a straight line is shown in the graph belo6arda 2t36 ymg j6mpa;w.
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 yci*1-av ahm7h4o ra1 circus clown on a unicycle moving in a straight line is sho*ai ma1co7vh 4 ay-r1hwn 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 ob;t, )5bf.58dmm oulg8o ,,k)be fqtob a9wrearth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a marble on a tabled 3: myup/axj2 top for 10 seconds. For which time interval(s) did the marble have a negative amd u3:2 j/xypvelocity?


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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 descry58a g zyz.6jjibes the motion of a marble on a table top for 10 jy z8zg5a 6.yjseconds. For 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 accompanya.rf o 14wt4u/nw itd2ing graph describes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration br. fti/t dwn4wo 41u2aetween 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 accelerakz ;zh7 0tvi9etes 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 downward with a speed ofw7 cgv8tgzh348sh :to $20.0\;m/s$, 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 co tphf09 tha*3hrrectly represent the motion of an object moving with a constant speed in a straight line?htfh hat 93*p0


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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 graw /bba.9 ofqsiokgcvm74( ob-r -/.guph describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the tfabci/ gomoov(k b sb/-4 qr.7g-uw9 .oy 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 y0*; fawi;65w m6aqc0kkx q oiof a toy car across the floor for 10 seconds. What was the toqq0 cwk 6yf;5 *xm6owik;ia0atal displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanyi7tbna/*b+;rf se ye/ +j xqji1ng graph describes the motion of a toy car across the floor for 10 seconds. At wha1bn q;7 x/jai r /+etyj+efb*st 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 u1-n -jopho t)wj,/tfs,l/bci ,nm f:uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the follo-scmt jt)hju pn1 ,fwf :iob/-, /nol,wing 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 curr*bi3 03;l tjgd hj:,k 0pyxpjve shown. Which of the following statements regarding its motion is k*x0bi gj;:pt0 rjyd33hpjl, 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 the velocity versus t(gb ro*7 (sj3fvxpb a4ime curve shown to the right. When does the car have zero acceleratjav pfb3* rs4gxb7(o(ion?


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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 b 2dtgturi yw59kp,+l1i pm, n2all is moved so that the angle between the velocity and the acceleration of the ball i, ng,lr59itmu21py2 k +pdwi ts 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 toward each ot;dtwf:pk v5*rher.:rk f5w;tdpv*
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.l;(bdwyk h1sge()frf42 zhb; When the acceleration is positive and increasinhb e(l h)sk 1f2d4z;wbr;y(fg g

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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 veloc aqp)f.ai+i (yity 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 tdpyor2.vknv oa8,o* 8 wo dimensions, which one of the following choices identifoopvvro2* d ,ya 88n.kies quantities that must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car movetb,67du-pw j0/f5vdx g i l-/y seb+hgs $3.0\;m$ 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,;z(dr 3js)s;js l d1ep $y\;vs\;t$, 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 ai urfmr9rds5qdgm82/3.,a w total time T in two pwr q aa9/5,md gdi83.fr2mr usarts.
• 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 straigje/hydw+ d .i:ht track is shown in the diagram.e.d w jd/+i:yh The thick 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+ h(o/h;oyrl43 fkut1 g puea: is shlhoyh1:to3p4(;a e+ukr gu /fown in the diagram. The thick line 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 motion of an object given by the posit3kbwesftw d 4ath 0 d+2,0wc8fion vs. time graph shown. For what time(s) is the speed of the objeh84d+s32b kw,0 a wwftdt0cfect 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 ob 5jc :oisv4t+whh7g(pject given by the velocity vs. time graph shown. For which time(s) is the acceleratip7ocg 4h w+vhi(:t5 json 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. uesc(u.;wu7 d time graph for a fixed time interval of an object’s motion, what quantity has been determined for tha;uwd u.uces (7t 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 o ykz;87cyi1j 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 tmlw ( ytp:*)-th -izfcwo 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 f( fzus+snbi ff .));gprom 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 re6wkfyz 6ux1(zzs7*nw:d frvo ez 6 oqf0s)9w )aches 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 al+u67k giadhl2 ong a horizontal axis is shown. What i2kdhil 67+uag s the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifies allujn )cb fgl29o9mq9 fp:mb8g3 of the listed situations for which tblp:9c9no2 3mjgf8qfug m) 9 bhere 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 line is fr+xw )h/gpa4shown. The object starts from rest at time t=0 s. Atwf4)/xgarhp + what time(s) does the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity along awu )f3s2 roya4 line vs. time is graphed. Which one of the following choices best gives the proper intewa2oru3 )f4ysrval(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 w1as wbb0rrh80ith constant acceleration. At an instant of time, the information about the cars is 10bwbr0 sh8rashown:
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 positi .pj0xa27bwdcls .+xton $x$, 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 of the following choa4 kj:1k nqx-jzfi )i,ices correctly describes the relationship between the average speed o1,knx:j 4 i-i)zajf kqf 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 ofnyal:dhq ::v . kg4jj. time, at which the car and truck travel with the same speedjjnkvad .l :.y:hqg 4:?

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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 anbt pm5e. xr 1no80.sxtd Q, 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 folxsemb1nr05 .ttxp8.olowing 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 an2vyo2qr0.tw :z+rrq6( i el fo object moving on a horizontal line is shown. At what time(s) is the lroefri+r20q.ov tyz:q (62 wobject 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 followij 0,s j)zl y/c(;aowgmng the position vs. time graph provided. During what time interval(s) does t z)g wj,;y0(mj/aloc she mass have zero acceleration?


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