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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 a47mor 1hat fz.t a constant 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 uni )itxg ,h**h7cl qjf*it time without reference to a particular di) 7*gtc* lqhih, fji*xrection 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 arounxi 51zss tk:t 1a l-q:qg,sf5od a circular track at an average speed of 50 51:g, sxoa1lfzsiq5ts kq t:-m/s and then completes a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m ilv2he 0*dd6j yy*qbd. n 1.0 s at the constant velocity. If it continues, how far will it travel in 3.yvhelq * d2 bjdd*0.y60 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 on a 30-kg plank that is sliding atd:*mt s /: a7zcanyyq( 5.00 m/s to the right across aa*(:ntda :yc/mzys7q 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 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. Whadb w79px1 mj5 iu/os5mt is the average speed of the motorist on thiomiuwds19 5x57/bj mps 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 toy car travel h7 u dl19uvmuke*vp-)8 9d 0a m+b9l5kuwixnuing along the x-axis. The graph shown below is a plot of the cll kxkhev niuud*m7509w m9u8padu)9 +v -1buar’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 questiony+)yi eve:s2lo i: . iwr7bx1c refers to the motion of a toy car traveling along the x-axis. The graph shown below is a :+7)crbyweo:2l xiy 1 i.ie vsplot 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 refers to the mokuf2b8 1 guhi9tion of a toy car traveling along the x-axis. The graph shown below is a pk 2h8ug i9bf1ulot of 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 flying duej)5z1zuz q*cb 5f ( 1/zjcgpcy south for the winter. At what point did the duck stop its forward motion?c)bgzz z5zy5u*j(11f /pcc j q





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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 whic+omv uxo.4 h/eh shows the position and elapsed time of a car starting from rest and uniformly accelerati+ x mouh/.e4ovng 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 reb/ aj0fu )zf5z jbg4 y.8vhsa+fer to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleza+0 uj4jz.5f/bh afvb8g)y sration 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 posithq 1gz9t, 4y:p kyvkb(ion time graph shoq91hkp,(by yt4kz:g vwn 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 -j(e)k oe qb6(8tvrwkrefer to the following information. An ideal elastic rubber ball is dropped from a height -qrv6tkb e(eow(8)k jof 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 p wu0p 7x -(o*loq.nrdquestion refer to the following information. An ideal elastic rubber ball is dropped from a height of abouwd(o- l r7p.x0 uoqnp*t 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 tralaoj8,sy5- muy nr(fb ;j ;19yoqi ;djvel 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 followin0-yx lxn;7yy rg 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 refvvaij6y nz1 mq;*2;lfers 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 scle cq/ -brfa-:enario: 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:5o;q uj:cyfh(umh q d6c ;:.qy 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 hori,u;je1a vxu6 tzontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's a,vtax ;6eu u1jcceleration 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 bet8 uty g(,(r rn29udcdiween distance and time for an object that is moving along a straight line. What is the instantaneous speed of the objn u(r(8,cd2tyi9 ugdrect 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 5,ed-w7- e:7nnmht we9pv iokfor an object that is moving along a straight line. Between what times did the oi-5 w-d kewnm9hv7p7 ,e:ent 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+8/:rh i kylc+ivov.b 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 thei +:icoy/b+r h8.v kvl 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 an g::hqxgt39wxd uniformly accelerating across the floor. The time and distance traveled from the start are s:h wx 3qxtg9g:hown 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 represen942a* )n+l/m lrduq mt2uh enpts a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown i2nl u l9qm2pn )r4au*/ e+dmhtn 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 st;t-43riaqgo q lu: j2zx/pj9v-r9mtharting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in thevl/t3a9z4iq-:ou t -hjxg2mjr ;r9qp 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 acceleratj ca9fm) x/tj2xfj(v ;ing ball. The position of the ball each second is indicate mc;(tfvj9/j ja)fxx 2d.
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 acceleratinptr1: (ramk )og ball. The position of the ball each sec 1m)arpt :o(krond 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 g. odjj ps11z/m+akw:moving in a straight line is showmp a.j1+1 j dskozgw:/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 unicyc gnt n3s9oh88yle moving in a straight line is shown i ns3tn8y9og8hn 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 fals+5 ry;n.taa bls 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 denv+bu nz9b(6h scribes the motion of a marble on a table top for 10 seconn+bhb znuv(6 9ds. For 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 graph descria mrm. v6 ma7:dj)pxhost0c80 bes the motion of a marble on a table top for 10 seconds. For which time interval(s) di pa8mt r7 6).mxdm:jhc vsa0o0d the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a marble p uc1.uovv8+ e 37mjigon a table top for 10 vvmc.i 87up 31u+ogej seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformlavca h,q (.bac;c a*f-y 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 downwa2j 4rso2r+0 o4pmmyl vrd 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 z+ fcqn7klfsjd)q -9. of an object moving with a constant speed in a straight line? q -c+ f z9.ldjq7f)skn


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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 toy car across p 1fmd)xt* b9l1h+ htrthe floor for 10 seconds. What is the acceleration of the toy car at p) +1thldfx *91hrtmbt = 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 descri wv yl(-szy/,ibes the motion of a toy car across the floor for 10 seconds. What was the total displacement s/w-y izy(,vl 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 descrf4x1xwlgd +e)zqebm057 w;) g;4dm+o bt jcdb ibes 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 be w1b4+ dgm;zfd c+bbtx4dg5) x0q )e;je7l wmozero?


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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(/1jt if)m i/c(bn(h;cb oiemnj6 rc5 km/hr in 4.50 s. Which one of the following choices best represents the acceleration ct1mi5br(jnbc f/ i(()nih mjoe;c/6of 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 follo: f gkw/j(u9:o( dwnwnwing statements reganw(nk(jwo: u dgf9/:w rding its motion 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 thw( f;8pka f/dne x-axis according to the velocity versus time curve shown to the right. When doesp(w8d/kn; a ff 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 bv a;z+ e7y0yhui,w- fgall is moved so that the angle between the-;eufy+0gha,zy vi 7w velocity and the acceleration of 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 1r90z nw7eed0a50 kilometers apart and traveling toward each other.naee r0z 0w9d7
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 is4p 7.h1 ;qhf k0zqbvkl positive and increasing vqp4.1l zkhb0k;hq7 f

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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 ofz0sx) /.ooqwaw :uqjb l +2vb3 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, whiceel-. w2mv vne )jt,bz: :i4ikh one of the following choices identifies quantities thein.) e:jzv -k2t:ibe4,lw vmat 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 moves .3m6q hzcbd;;aj1asy$3.0\;m$ 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-timqsp *x)ia*3xsl a)ta7sove /.e, $y\;vs\;t$, 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 onegf5tpb1 1o:g+gzz/ nh-dimensional track for total time T in twotpg1zh+1/noggf 5:b z 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. txzxp 5d/ rz6,b0*i2crahl *lsime graph 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 atab*xlrs2 zhdx*c5 rzil p6,/0 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 foru(odqh6hv-* v the motion of a car on a straight track is shown ouv -*qh6( dhvin 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 mr+ nvzx.ncwjoz8 -u7 -otion of an object given by the position vs. time graph shown. For what time(s) is the speed of the object rz. 8no7juwcz n+- -vxgreatest?


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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 ob;mtb eu+5 (ymjk ocik)6,:pnf an object given by the velocity vs. time graph shown. (mnm,)ou6bpcye jki;k +5t: b For 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 acc92 xcqme qf (s7 sl/axak22df8eleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been de a2a9f(x2s k8q c qd2e/7mflxstermined 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 increasin sh: f)am3k,(xn a6h:uca c oo8.auvi6g 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 ajfqfx* : -cdhp; ,fj-x trip in two parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reac6jqeeqlb3x4+ m szw70hes 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 an(4b5ruhiqp a4m wh5e-d 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 partcga)wr-;pte * icle moving along a horizontal axis is shown. What is the total distance traveled by the particle fr )r; tcagwe-p*om 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 identip/j bq -d7m(6n,vruimfies all of the listed situations for whip mm-r6jq,nb/ (7viudch 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 obj2z8rky 4o(bib6 1x au z3nkxm(ect moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement fr8k21nmbx ibzo(zrxuka y( 463om 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 a b0s0;xpuc u n8fw-l9und its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of tpxs9u-u8c0uf w0;lbnime 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 with conszr8q titc )d-ii3fw 3,tant acceleration. At an instant of time, th)-idfiwrci qzt, 33 t8e 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 *uetpif:7ad mgz3 * .p$x$, 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,e78f m ,z b9*mkynjkz, which one of the following choices correctly describes the relationshij9k b7,ke8fy *zznm,m p 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 following choices best describes the instants ofi-0 0.iwkvtfvk 23xgewa c7e3 time, at which the car and truck travel with the same g3fcx7 i w-0vae3 w vkte20i.kspeed?

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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 frou ek l;rw/u5e0m rest at the origin and will move along thelee0uk ru; /5w x-axis. The acceleration vs. time graph for 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 moving on atsi5 z/8epb30tto y( t horizontal line is shown. At what time(s) oipy3 b/zttts (et805 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 along the x-axis following the position vs. xu k 6,d4l 5fd902)*v pu)iq,mudfiq5 yc jozqtime graph provided. During what time interval(s) does the mass have zero acceler *x5p q)d,uvu9i0 i2,cmqfdl f6 5kd)quzoy j4ation?


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