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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 rai/xkafq- p4k9 dius $R$, 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 w:/iql ; kbpr,jithout reference to a particular directiorqjk/ pi:;lb ,n 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 circular track at ypsverjsm ( l q:99r;8an average speed of 50 m/s and then completes a second lysrlq v9 m:(pj89 re;sap 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. If it continug3+-gg6l qu vxes, how far will6luv g q-gx+3g 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 s b6q8ao bmc+x ;sk9p(pp0s/)caf1ai itationary 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 abmc6sa;1/pia0 akfqpxi o)b p (s9+c8t 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 t; 8 y x.wabwlfgf,v/1vfc67t 100 km/h. What is the av bvgw a1wf7;,6 fty8xvlcft ./erage 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 referbh2czps /v4as,c4m3jru*6h bs to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the rs/b vh43scmh p jub*azc24,6 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 travelho( k-l1 le(licvp w3n b5,bi/ing along the x-axis. The graph shown below is a plot of the ni 3cbkp1l5 ilol/v (h-eb ,(wcar’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 xtmql8*g-.a e le(u7y car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,* 8(- xltlaug.q7meey $v_x$ 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 o td3v- cf1;7/fppxt tnf the velocity vs. time of a duck flying due south for the winter. At wf3pc1d ;v n-7pttt x/fhat 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 bel kb0 ;0 b;sp,)xfvll*wasne1fow which shows the position and elapsed time of a car star;s)fs,kw0n v bfa 1l0e;bx lp*ting from rest and uniformly accelerating 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 b;e0f p,n vknfl / fhw:/mlc*p4elow which shows the position and elapsed time of a car starting from rest and uniformly acceleratinpnlfv*4 eff;/l 0n/cmwh: k, pg 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 shape of 0feiy.u8 jr4hthe velocity time graph for an object with the position time graph shown in the diau4f0r. yie8j hgram 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 informati3xzq:dwie 0 h0m ct/6von. An ideal elastic rubbewm/ 0t3 dqxhvi06c:e zr ball is dropped 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 dtp5/qj6+gz e5m u/rkto the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits thu5trk/ pe/zmj65gdq+ e 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 trav9e2e4qv bb85 myqzf-kel 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 to the following sc aa zyomuz( 0h,ot:a68enario: 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 fks srp45 f++)co)cqwyollowing 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 refe+bgw )sc)c(z5y:xo,/l8 x ze7e 3tlfzhoy ye,rs 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 ref ( ,ur-z48rsce3evwfmven)7n hi4om3 ers 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.
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 horizonta;qgwk,8 l9 liumhy)/3 k2w7vv*tjdfol 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/ghl83)iyvjf9w;kokm7w lu,v t d*q2 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 represen1ctdd, b52a t qja(*m fbcr7g2 vidy+-ts the relationship between distance and time for an object that is moving along a straight line. What is the instantaneoftgbvdq2mac2d(5dcj 7 1-ir *baty,+ us 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 r by67 +zk:5 u vdywitvz,y(yn;elationship between distance and time for an object that is moving along a straight line. Between what times did the object have a (izty;wyn dz5b7y:vv6uk,y+ 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 as0co0fl) f-x 9f 6lgdstraight downward on Earth with an initial speed of 12.0 m/s from a pos)9sfd -aofg c 00llx6fition 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 ro +whn8yyp: n2/pvm; rest and uniformly accelerating across the floor. The time and distance traveled from the start are y8pvom2nnp/ r; :yh +wshown 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 rest and unnx nkm(nv; ;b 2w78wz 4rapw,piformly accelerating across the floor. The time and distance traveled from the start ,rnapbnmv w 8n w;;w k274xpz(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 re(fxjl s 0rhk*7 eaz/ dmsss4*yl-ks4,presents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in th/0 f4,7 ms(esask4s-*h zl*xjylrd sk e 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 unifo08tw ewg isrd lkg*/c- p;7-kvqv9(mv rmly accelerating ball. The position of the ball each sec(l*ckrgs97tdp 0-/ q;e kwmv8vg vw-iond 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 posit)beuwotv0* -p ion of the ball each second is indicated. -)t ub vo*0ewp
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 poap2y1 ;y tb6a unicycle moving in a straight line is shown in the graphpa t;bpy26oy 1 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 b0w5zk 8o1:5jyckgmvbs:8ct a circus clown on a unicycle moving in a straight line is shown in g:ymz51 88: ck sjo0tvb cbwk5the 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 sp6dvtwwpha+z *v- b 6s z0wkpb-7n +q*urface 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 accompanya mx* 6dbsr:zn0 k(- a 8daus8;cc4bbring graph describes the motion of a marble on a table top for 10 seconds. For whichxr cc846z0brdmb(8ba:;k saau -nds* 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 accompanyi,hfz 8cyy 6 hi,)ayn-tng graph describes the motion of a marble on a table top fo i,,yzyf )h-tha6ync8r 10 seconds. 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 accompanying graphb6m1 +th-r-kxl+qjq h zlz,c; describes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 s h; qkqzllt 1c6xr-b -m+z,h j+


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly from rest for a timea8qs22n 9h dugmzs; k, 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 zzu5xh6u th kvqv0q/j8x;fs 1; jtpdl*37-iidownward 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 re k;7ks2h8qt+zpggg3 dp z9 k*tpresent the motion of an object movi gk*2qpz 7k +t;gdhg8k3sz9pt ng with 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 graph describes the motion of a tog fn86n 4d8 anlfhqdpr17 6kw*y car across the floor for 10 seconds. What is the accele f6dn dl gn wn84a1h*p68k7fqrration of the toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a toy car across 9r1xd ob3tfqt1 u1s;nthe floor for 10 seconds. Wft9su 13ox ;r1b1 tdqnhat was the total 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 accompanying graph describes the motion of a toy car: xz:s8 vraas3 across the floor for 10 seconds. At what times or as3zrxv:as:8time intervals must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which oz uojvr znv4) r)(*tupz5 f..pne of the following choices be n.*ot z) r.zzrpvj4u()5pfu vst 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 curve shown. Which of the fol 5)bc7u:s h7q- x htjwz/dq+khlowing statements regarding its mo - /th7bjzucq)+kqh 5 d:shx7wtion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the ve99s0arpiy ( ft5 6ovytra0v4w locity versus time curve shown to 0ow9ast6 r 09f4 yip 5rv(vytathe 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 is moved so that the anglel5:03 v0ocu )f/az (ydxwny7xzm1acp between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during ua :ya1zz x0n0 c5/3)cl vyxw(d7omfpthis 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 ardpb 6- nz.n5 e+,9ke bkum8rife 150 kilometers apart and traveling toward each other.zd8+5 fm-e.bi96b,nprk nu ke
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 acceo p 9tc /k836uvwxyx:mleration is positive and increkxw u:tp98o3/vx 6ymcasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitio,j thfk ;e,eaxf9tlqv /+ 9i/an of average velocity is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, which one of the following choices idc/6jbyg5jxs u,kuj)*t ue c20entifies quantities that must have the same directje u6/ ksj5u*xtbjuy0 )g,2cc ion?

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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 move)k h8 5a,ukycppa 7p)ns $3.0\;m$ 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-ti-jk9d5:iasr s me, $y\;vs\;t$, 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 p-i8tml us/chc (.3p ;j1o-ek 3gojgvone-dimensional track for total time T ihgoe tc33o p. lkjmu-;8 1p-sg(v/jci n 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 moti ,cp( cnsnd 4v-(arxvk x-khr gjs3-37on of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume,4kr a3gs(nrd 3 v7c(hjn-v- s-kxpxc 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 strait6s:gamltq/v3s (;v a ght track is shown in the diagram. The thick line represents the vel3aa(vtq/g l: mv t6s;socity. 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 position vs. time graqen3nm ek/ih-.7 g2 fuph shown. For what timgi/f k e unm2-7.neh3qe(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 3 u+lvpr u5setx /95cuan object given by the velocity vs. time graph shown. urvu+exl tuc3/p5s9 5For which time(s) is the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the ax9 7b *+ad odkuhqrb9.zq4: lwcceleration vs. time graph for a fixed time interval of an object’s motion, what quantiqb bwxa9 r*o 7dd9z4hqklu:.+ty 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 horizontal line p; ( yk6upmw0,au0t pfwith 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 in9 ray,m9a:14kx mkg*e3ubfhj 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 the ground ip dsbh el7 *o- m*tqz.sl.ad.2n 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 reache3mwxg29 b: h vmn*qz1 aoxq 2mk*e+a*ts 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 ok/jau f .xd4/a9x0uamf a particle moving along a horizontal axis is shown. What is the total distance traveled by the pada9a/ 0/m a4ux.kjx furticle 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 corrth s5r.br5)hrectly identifies all of the listed situations for wh5rr5b)t . shrhich there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object movingng*n89axjs;x along a line is shown. The o9j ;x *gxnna8sbject starts from rest at time t=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 mly7h w bxbk6-i-swh7()vn 7mthe origin and its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is 6 ykw7)mx sli(nmh-w7vhb -7b 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 tc9 toedanwg53 4.zhn5he right on a horizontal track, each with constant acceleration. At an instant of time, the information about the cars is ht9355n . nd4cwzea ogshown:
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 posi3ixqjrjg.8 h j 50q3tftion $x$, 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 q uh1(/wa/gggshown in the graph, which one of the following choices correctly describes the relationship between the average speed of the /gu agh(gq/ w1truck 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 timey0w kf) tvi3pnmu 7 wt:ct/*+q, at which the car and truck travel ww3 wvt+0y/tqmfc :u ikn7)t p*ith the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rest a1,ysx wa4mtxkza-7-h wz6f 8ut 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 relationship foz xkwfx1h aa 4sy tw,-m8zu-67r 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 oftzs c0-tw3g2 2 a3lbrcmwv+p* an object moving on a horizontal line is shown. At whatts2 wccg* vza33p 2+ w-mr0tbl 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 alorrlag/1 sz (2b2,oepa7s(d ejhuo .r+ ng the x-axis following the position vs. time graph provided. During what time interval(s) does the masg1zjaeodla2ouh7p,/ (r 2( rres .b+ss have zero acceleration?


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