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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 radius 4kw64n q: z7ibz1oyovwyr.cd* 9 rd+ d$R$, 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 4ux- 25egocyj particular direction i-c o5g2j euyx4s 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 oxdcerypi9/, 1ne lap around a circular track at an average speed of 50 m/s and then completes a second laprpdcyx9 e1i,/ 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 w4;mh/4on7 c1 e 1/bumzyzfqz0.80 m in 1.0 s at the constant velocity. If it continues, how faoqbemz1z nmz4uyc ;7//h4wf1 r 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 stat:8 gxa w e8);b)sixyygionary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. Thy;ixbe s8:gg 8) )xaywe 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 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 kmu iq/au0 xm,f;/h and 400 km at 100 km/h. What is the average speed of thi q,;0m u/fauxe 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 refers to the motion of a toya57zb64nxjl(nespsf ; 5pus9 car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction, szpa 5s;lsbf jn7e4(pnx u596$v_x$ 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 e6 -mc wzji3i 2b955+1brroi2x umffg motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in 2x c rm 395ibuofg5z6fwm2ije-+ rbi1 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 t2,( d h2dws(l0n,cg -rehwy chhe motion of a toy car traveling along the x-axis. The graph shown below is a plot of thhes(2 ,, wcy(rddn0c -whlhg2 e 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./f6h2i p7ppwc time of a duck flying due south for the winter. At what point did the du2/ ph7cwf 6pipck 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 bm byunz: w4+*xelow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car+:4n b*ymuz xw 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 shglp ;qqx:ujwt;6)m6 pows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval isw xp;quj6q: );gp ltm6 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 velocf95ko: ;i5+j1dmvbr *kjx8ri7shqh 9 : rb cjyity time graph for an object with the position time graph cbd9b+:yro7f jmkrk;xrq1s5*8vihijj 9:h 5shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the followingf4* fl, soy/lv information. An ideal elastic 4ll ,sff v/*yorubber 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 to the following informvg.7eh7id ei +t27c+ sd xbhd.ation. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height. e7t 2gvidhc7.b+e . dhdx+7is
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with a spjk0*89s otl eqf8 bz4aeed 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 r36r -ihrucb4e efers 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.
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 scena q;7su7unlej5q 6ejq -rio: 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 s9pxat8, oqy6 bcenario: 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 follo2a2s:op v 2yua sc1tioec/1d 1wing 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, ho jd/ro;z1a;lhw ,5cacross a horizontal table top and off the table edge. Which of the follooh5,h/ c ;zrl1wajd; owing 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 between distance and 7fe9b2 4b34 g5cxi0pwuigqoa time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 si xqcb4bg 02ieo 7wu g9ap3f45econds?


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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 relations/ac3luuswv) -l -ah,chip between distance and time for an object that is moving along a straight line. Between what times did the object have a ac,vc)hlauw- l-/3 sunon-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an iiicunr(+s8fa mo9nn70g 9r;q nitial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, 9c fr(n+qi 0nm8rg7a su;9oin 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 rest ak 7q d-zealz 8wv4/s0ond uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagraqos-78z4d0/z kevl a wm.
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 representsyaoynn8viz9 e ,s2m h*a 45l,ytwu6y/ a toy car starting from rest and uniformly accelerating acrosslte89ah5z*/m sy,6awn 2 y4,vonuiy y the floor. 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 startingsqih91p -n cu( from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in tquhs-i(c1 np 9he 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 boo1 wajau.r :5all. The position of the ball each second is joo1.rw5:a auindicated.
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 acceleratinw3rxnh3 o46g yg ball. The position of the ball each second is indinr3 4h6 ywxg3ocated.
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 circuse0m:j6l94b7t in vr. vl0dsog clown on a unicycle moving in a straight line is shown in the 0rs6vo:l7g4v bn.0dl e9mijtgraph 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 o.k ajt6 wv pto)s88tg34 hmm(qn a unicycle moving in a straight line is shown in the graph belo4 mto8 j8a) spgt kqmv(36.htww.
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 16sx;:/gs;pdm *aws7t.3gt 9f :n tjuhnwtgbfalls freely in a vacuum near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of u:rw bev(0., k.emvbla marble on a table top for 10 seconds. For which time interval(s) did th kbv:(r0,b mewu.lv.e e marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of o)jfmd1j s*bo;o4 *y ja marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive acceleration?jy;j o s*d4 b1j)*fomo


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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 grap;kmn*vbin g;n* u.1x gh describes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t x*gu k ib;;*. nngmv1n= 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly from rest for a time 8p d9tq u(dslq zb*7i8of $2.00\;s$ 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 str9lgw wo,xvfa* pd,x80aight downward 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 represent the motion of an ;p9a 3bm.tbl k,6dtmgobject moving with a constant speed in a straight linapt 6,bbtkm 3.g ;mdl9e?


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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 des52dr l,fytj+y41*hvb 0en ezscribes the motion of a toy car across the floor for 10 seconds. What is thnd2e1yr hb y j+lte0sz,f4 *v5e acceleration 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 accompanyin2bz.sgyu89c 7 jwe*2v2kzgllt8bw, 5 dpi ye2g graph describes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entir izu*2 cybpwt,g z lev.8 bwg28ykejls2 59d27e 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 gra 3xczju)qw arz(.d *v fghb676ph describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on the toy car bejzz gd * wq67a3.()hcv6b ruxf 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 uniformle97gj7n 5z-(m kg ,g)q ix-tizhei8h iy from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best repre mq7(j-)5 x9ethgzz7giin- 8g khi,i 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 velocity versus time curve shown. Which of the followqj gg+ 70yxq ,.tzlsxsl8j8*fing statements regarding its mo0j8x. 7,sy t8*l j+ qlxqgsgfztion 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-1qal nw1 n4ai- 2ai7lu ).llvgaxis according to the velocity versus time curve shown to the right. When does the car have zero acceleratvqia4i n a7.1-l lu n)gw21lalion?


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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 the0 5ba9hzkvod6xom;s 92qfz*v angle between the velocity and the acceleration of5 z60kzdqvs xa*v2bhom;9 fo9 the ball is 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 96rzxx.oztz )*noi 8zother.t.6*8znxoxz z 9 zior)
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-axkjv ,e6:bzqygw0i, e8is. When the acceleration is positive and inci,6zky,:qe w08vg e jbreasing

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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 velocity is sy5z;ijjpj. 6

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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 dimensionj0a ,6m/1/aj3. zu qybg4o-dkki gjh ss, which one of the following choices identifies quantities y,kgj14zq gb 0jdj/a.u-/6hmskoa3ithat 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 movex;6 d :h,yszcv 8 s.fwyki2:qzs $3.0\;m$ 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:do a 0(dji5s $y\;vs\;t$, 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 to6uc4ki.e n ln/ the right along a one-dimensional track for total time T in t ./lin6 nucke4wo 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)8mybw *mkmwvi x2h** for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts 8y*mm)2mkx* hbvi w*wat 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 stby0ph 4l.w i,mraight track is shown in the diagram. The thick line represents the velocity. Assume that b4 ly. hiwp,m0the 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 q*sgp2ud(*he the position vs. time graph shown. For what time(s) is the speed of the object greatest*2dps qge* h(u?


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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 motiox69kx w;curw6,,j my an of an object given by the velocity vs. time graph shown. For which time(s) is the ac a,uj6x6,y9 c mxwr;wkceleration 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. xmy+ wade,/d;time graph for a fixed tdaymxw+e, /d;ime interval of an object’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 along a horizontal line with increasizbnrd9d:q8s c5q 8 il6ng speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a trip in two par+c ;*m0pxxp outs:
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 px/o70j,fa jw 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 fro), ibnsour:h *m rest and reaches 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 movingy,0v:g ei 1krb along a horizontal axis is shown. What is the total distance tr1:0 ,rgve ykbiaveled 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 choicese2tx (d qmvx5 s71ldb3 correctly identifies all of the listed situations for which thxbqdsvml52 71ed3t x(ere 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 alon28uiti jr1ou9 g a line is shown. The objec2tioi8j 1uu9 rt 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 the origin and its velocity along a li1msfy lz,3g wl8,zwyg* kps.,ne vs. time is graphed. Which one of the followiw* ,.lwy p18,kmzl3gy,zg sfsng 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 hoca1 z)i1t0qnymbc 9t,87nst arizontal track, each with constant acceleration. Antmacct8izqbs1 t0y1n9a) , 7t 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 aw.fzykg+8d2 a*dg7p $x$, 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 t1dnzpcra bc0:w 0(jm6ime shown in the graph, which one of the following choices correctly describes t0pmc(zaj 6wd 0nc :br1he relationship between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the followb6 4t3z xu30d*upkne7j 8bjbm f.u*wwing choices best describes the instants of time, at which the car and truck travel u.tp 4zujb06x3db u knb7f*we*m38wjwith 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 bg 29.huycsdjo( ,f, morigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly idegj,ofd9 c(.,sh y b2umntifies 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. timek *u1 xohp40ak graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest spexp4a01 *ukhk oed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the posi,4 pr nmek5qb8tion vs. time graph provided. During what time in,ep8qm5b4rn k terval(s) does the mass have zero acceleration?


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