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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 con s)gis5dbkrk7;t t.)pstant speed around 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 particular d65magnoy la 01irection is a ymga650no1l 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 ap d;sm. v6l8qlap around a circular track at an average speed of 50 m/s and then d8lvq6a;p. sm 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 lhhcjni8s p92bi 71y0 1.0 s at the constant velocity. If it continues, how far will it travel ii 0yj9sp1 8blhni7c2hn 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 stationary d6+0-e xz hr3ysp 2b4jwepi)von 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. What is wysid p3x+jrep2)h4- evzb06 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 kvamz3u f:u,d9xg uf3jw s4:;m9r psn- m at 100 km/h. What is the average speed of the m; mnf:p: s9urx d za-jsvmu3g9,f34uwotorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toyq8z s9x)18pzn,y6v(nam th dy car traveling along the x-axis. The graph shown below is a plot of q 8h 1dy8sn6vtz mn z)y(xp,a9the 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 tvf-j sit )r4;xgr60r y0x/xeto the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity i0r0t s4yrgr6 f/x e-v ;)tjixxn 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 the x- 50w odx5ub6da n/q+0 dhiw-kgaxis. The graph shown below is a plot of the car’s vewh6da0ix ku + n- gowd0/5qb5dlocity 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 flying due south for t stjv9cwv *s n87y,c:phe winter. At whasv wcsjcn78vy *t,9:pt 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 anhl;45bdkts. u6h+lakc 5aar (d elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average veloca5+h u.k lt ar(5ckas b;4dh6lity 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 ra.jaxa,u *l, fm3q 60jcr sz/oefer to the diagram below which shows the position and elapsed time of a car starting from a, f03* lc a,jm/sa6xu qoz.rjrest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time g(w vjd.l2(bx fraph for an object with the position time graph shown in tb. (flwjx 2vd(he 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 thy3 cnwuq39uh;nm6 7pi e following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original hyp 3 hw3cumu697 qi;nneight.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following information. 3eo7sc3h3 hd)tz 9owtAn ideal elastic rubber ball iss7ht c3edtzo 3 )ohw39 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 traveue0 3n:mc:ejb l 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 h2w0s n.iz vcyil28o6-uc2 uxscenario: 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 lqn( (ss fb5 oyvgbm3rp:4w-x)zfqa 20xz7-o 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 the following(sv-qbx pjg.op5 zw98ii vj); 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 followv)a6)z.- a9xbk rhluvol* +sking 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 raaalewil n.2t ;sh17 0rmp, across a horizontal table top and off the table edge. Wiwea7h.2nr lst0 al1;hich of the following would best represent 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 represents the relationship betweens ski *q,u9)n;ybop n- distance and time for an object that is moving along a straight line. What is the instantaneous speed of,bki*ns9;ounq s)-py 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 theeeq4pz sbc0 83 relationship between distance and time for an object that is moving along a straight line. Between what c83z4eqs pb 0etimes 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 wgw o9fe3 xq,8zith an initial speed of xofq8,w93 egz12.0 m/s from a position 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 b a33.qqp 3t1ymj enp+gelow represents a toy car starting from rest and uniformly accelerating across the floor. The time ap3.3t3m +nqa gje1p qynd distance traveled from the start are shown in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram below re qsl *xr:ab0qf(wo6:opresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from th*: 0:6f sxqbaqo ol(wre 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 65:x+fdrr g:mnbr 1 6g cczo1nfrom rest and uniformly accelerating across the floor. The time and distance traveled fr:r +mg6n n51r6xobgd1:fccz rom 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 unich9.kj5c )isw formly accelerating ball. The position of the ball each second ik )sccwhi.95 js 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 position of th6 )ex- mwy:-z)de is kiw.jew9e ball each secee i)).jm:w6- ww-xidze 9 skyond 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 yxht8k t )/hx.g7csa9 moving in a straight line is show.htc x/ as89t7k)xghy n in the graph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle moving in a straighte wvyz( ph8d/x l-j/f4 line is shown ip8jyfedzv / h-4w lx(/n 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 i .1+z w4hbetq6+xfvctn 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 describes4.pezcu;5kv4 6empekcj4jd(a1 pk 8i the motion of a marble on a table top for 10 seconds. pvezje(ja p.cc48 65ke;kd4kpi u14mFor which time interval(s) did the marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying g53 /p,yv:qimn(q ika2qrxai: raph describes the motion of a marble on a table top for 10 apkn:53yx m(/ i,iraq:2viq q 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 accompany (;1i7zdakb fsv1wcp8iqxu;7w pw89 wing graph 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 ;qc k 18zwiuipfw d pww1s79ab (8vx;7s


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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 ut q0u r+ub,16w:v bmh/yum0zrniformly 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 spe) 9)i:96k pcudk p5orlxtqi8 led 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 follk0nu0d uaa7 ,prj jma*n)26yiowing graphs could correctly represent the motion of an object moving with a constant speed in a straight liu0k7p ay6dj0r u n,2j*mna)a ine?


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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 zo//sc;tivuuv(*d g d/r h+*pgraph describes the motion of a toy car across the floor for 10 seconds. What is the accelera/;vu+z/g ht cud ori*d(s*v /ption 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 across74hkgy wi9hv2 the floor for 10 seconds. What was the total displacement of the7 hv2k wiy49hg 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 to-h nm3/.fud8kvxb7vf av8 8x iy car across the floor for 10 seconds. At what times or time intervals must 3kx dvmvx88vf 7 i8/uf-b.nahthe 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 5y zn(h/kikg* km/hr in 4.50 s. Which one of the following choices best repreyn khi5/k*g z(sents 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 veloc3)7xrh +pdi zwity versus time curve shown. Which of the following statements regarding its motion is N3d +)wzr7 xhpiOT 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 8d/ avng9b2 amalong the x-axis according to the velocity versus time curve shown to the right. When does the car have zero acceler a82andmg9v/bation?


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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 interv13(x *jv4 ie a- yzq) hhu09micxlqqs;al of time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about thes qxlhj;*01 ecq3)x4y v(ai iz-hmu9q 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 apar5et cd +3e.io-,*g glczhhxg0 t and traveling toward each other.+loc.z3x-d t e, ghgi0ge5h* c
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 posi8*3 awjt8l b2 -hehsdv sm f;r/8h0hdntive and incrsje-8brn 2fdd s/h8 tva;mh*8h03 lwheasing

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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 averagep+ mw x+9bhcne.+ dnh* 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 8,r ,0 pr.w uegcq6bruthe following choices identifi08 r6, cqwbrugpue.,r es 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 mov) r f(byl:ul.qes $3.0\;m$ 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-ti96 .ibgkfp2 heme, $y\;vs\;t$, 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 f8dq (bicligiyy0wk ; wm4q5;1or total time T in two p1q4wy 5qkc;gi lb iydm8;w0 i(arts.
• 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 straight track6ea3k (l -zqbx is shown in the diab(la 6 q-xezk3gram. 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 ii33d6l0 dnr s/vwyb6l. s 18ph)nf vkis shown in the diagram. The thick line represrwil6 sh/0) 8 1nnflsvd3 piy6kv3d .bents 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 position vs. time1ez). icku wkv/ .r+vx graph shown. For wv .r iez/ 1.c+vw)kxkuhat 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 the velocity vs. time graph stoe,7ub7wp g- hown. For which time(- e7u7tpogw ,bs) 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 accelerati8c vkm r inii +x f38df8z4hsptd0/31eon vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for pi4 d i1vmifsx08t c 3f8hrz3d+/8kn ethat 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 with incqfqu7j :io8qibbj*-y *uvdl ; n +;(fireasing 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 twopdy wad 3c5web48d7*sq+5c+i. ar fu v 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 releasedtov*b) yi6 bp9 9k3*pxfjgo(o from 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 reaches the groun:.u (z (krtce tq0hu6pd 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 grap7ep tn gkltjmc(l1j 00*6msi.h of a particle moving along a horizontal axis is shown. What is the total distance traveled by the particle from t=0 to t=106 .*(s70j n1ctkjtim0 egmplls ?


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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 followlcx4-; sj epy3v6cb*aing choices correctly identifies all of the listed situations*-cxbyspa l 4e3cvj 6; for which 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 acceleratio ayl2;nw6,ee2j7cpw9xko;h bn vs. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. A9 e axb 2w;wync;6l,72hjo pket 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 origit wo742z.3hab w xcj0sn and its velocity along a line vs. time is graphejz7hxw0w3o.a sb 2t4c d. Which 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 mx gylr sk.18f(tnc0g l3lx)s,oving to the right on a horizontal track, each with constant acceleration. At an instann3c1 l0r g8stl( ,xfg. ky)xlst 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 posit1+tg0ke dx-fs ion $x$, 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 choice) xm(gf :a2rwqs correctly describes the relationship between the average sg): ( xwmfa2qrpeed 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 u k6n(erb( gxsnm)s,.choices best describes the instants of time, at which the car and truck trag.smn us(bex)(rn , k6vel 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, each start from rest at the origin and wn qtif)9 wcuv ,ns.k u(.a(fn-ill move along the x-axis. The acceleration vs. time graph ft( u.n9fi, a)-.n kq (sucvfwnor each car is shown. 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 mov1nmi)rtcv+q5r jt2e8 h8b r0ling on a horizontal line is shown. At what time(s) is the object moving with its greatest srmbt)l1q+rh c8j 082nit 5ver peed?


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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 alon.yt-1pc c8ol5)ku8aneps )z yg the x-axis following the position vs. time graph provided. During what ti8l p a.1ynyoue tp)ckz)-85s cme interval(s) does the mass have zero acceleration?


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