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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 cg yu1 c/qejz;/ircular 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 withoutw8dsl195sa sf reference to a particular directls8sa 51sfw9d ion 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 circul,r bs.4hf (4cn wmeig*ar track at an average speed of 50 m/s and then completes a seco nr4m4swige, fh(*.bc nd 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 1.0 s at the constant vh -v6a2i,jif 9lll/u welocity. If it continues2 hu/ lw-a,9i6llf vij, how far 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 stationary sv /i5vqddc(sq bc gbq+nl 3 +./+zpy o)7sxz6on 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 (l+ dvq + sb.zx +ip/ozngd5v 3b/s)cs67qq yca 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 40* );g,jiculg6h2q rfnif 5hu. 0 km at 80 km/h and 400 km at 100 km/h. What is the average speed of the motorist on thisu.qf h * ng h)iil2jgucf5;r,6 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 yzv -b32nilp .to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the3pnil 2by.-v z 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 to the moti/*.ou8nvev 8d4gjje3 v xd9ag.gl- qdon of a toy car traveling along the x-axis. The graph/g o8gv av u *3j-e8ddg. endq.4j9lxv shown below is a plot 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 motion of 04cjd 2ifh+0p jvtte;a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in thej t0jedp;i2t f4 ch+v0 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 aggv y1/8(/0mox9ipt cxv xxd , duck flying due south for the winter. At what poin, yd 9vtmxg/xc 8(gp/oiv 1xx0t 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 srm lfti-g :5+jsq7 k0zhows the position and elapsed time of a car starting from rest and unig-mjiq r+l0: zfsk75t formly 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 below which xizv1,o 9 otz3.cd,le shows the position and elapsed time of a car starting from rest and uniformly accelerating in ai1z9cvoztdl ,. eox3, 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 graph for an object with th4frg t4q7 :kxde position tim4rk:qxdt4 f7ge graph shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the following informay*o8 sts 2ju;ky0uco. tion. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its ori0ktou82u j;y * sosc.yginal 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 followibusi+z2 v)wy, ng information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebwus +z ,i)vy2bounds 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 travel with a spef qmof/i4v,iy78k )l ted 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 theu c.ghj;,can0tj )+ca 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 refevwk*jpv: igx1:,w: dr 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.
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 follow)tux4f ,o rtz m2h19:rkzfa8 2htu.mcing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the following scd m/e ctz: 3z(ug; ba1hlr0c xplo+d28 xbxq95enario: 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 horizontal table top h yh.o8pyvep+ k7+vn lq9ryab7*f) (hand off the table edge. Which of the following would best represent a gk8+7 alny9.p(*qf re7pohyhbyv vh+)raph 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 andyv kue7ug03 7(3v yf6gvbkjx5 time for an object that yv7(6yg3uk3 vb70jg f5e uxv kis moving along a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the rwp 0m8 yy86ye*ujre*;kq5 kjoelationship between distance and time for an object that is moving along a straight line. Between w*; 5q 0km8koy 6yjjee *pwy8ruhat times 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 with an initiaql) e c7 rdjl4g4u,1j)rfq x(fl speed of 12.0 m/s from a position 10.0 m above the grou,x q4lfequ j jr7g(flr4)) d1cnd. 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 i 0s.egaii8e4og jgj;h5 ns)a05y)l nstarting from rest and uniformly accelera jg. ;e j8laehigsi5gn sao40)n5 y0)iting across the floor. The time and 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 represents a toy car starting from rest ans2xs e0zsma/) wq: he.d uniformly accelerating2a)szq/:swhx0ems . e across 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 s9 -jmieg f99p( m ccj*l+89gw w+mekrv1cz,uftarting from rest and uniformly accelerating across thec-pj9 wgcw1fjgv lz9c (me*+m k9 i+ 89,merfu floor. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ballodpdk(utdsi,z h7bc;x, h /7*. The position of the ball each second is i ,sdpzb(d hku7ot7 c;di*h,/xndicated.
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 bap(e ,5p,cw 9hh7fkvczll. The position of the ball each se9e(wpfp hcc, ,hz5v7k cond 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 dbkt y l9k bgdszt9yt*t,yy 5 7.8c6*umoving in a straight line is shown in the graph below.tyuzt 9g8blc5 tys*yd *7t,bkk 69.dy
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 straight icp9y /6-fhcxo13 knbline is shown in t1ky3 nxbo9f hi-c6/ pche 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 p6pz j1*y9okd(znh +o)hq :mhhr5t *w 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 umrk12ggi: q( graph describes the motion of a marble on a table top for 10 sec gm( kirg:q2u1onds. 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 describes the motion of a mary /w k vlwaonx-;2t5zq2mm2c,ble on a table top for 10 seconds. For which time interval(s) did the2-mqcnxmv wz25t; o ,l2ywka / 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 describesqnv,y2nz4 ktp:ho+r 1 the motion of a marble on a table top for 10,24npo1htk+y:n rvzq 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 acceler9ryuzcn 82 nca(o4x ab,h 6z.uates uniformly from rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown st6yjhtwr0*0oz2a6r/a f d poz2raight 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 grap hhq(u9+3 4qysngz cu7hs could correctly represent the motion of an objecnuy4z7h qh+s( c9qg u3t moving 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 nhpuk3i p s.: om*1 x.6*nhn-,wr*qf nh pj+yothe motion of a toy car across the floor fo-pp 3 qrj hnpi *xn ,um+fy sno6**k.:howh.1nr 10 seconds. What is the 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 accompanying graph describes the motion of a toy/;yt9 kl5;bdtv5jsyp wg.* b g car across the floor fogtskpy;ltvjd 55/b9;bg .w * yr 10 seconds. What 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 ) t )tzatsvv+y.3:n(rgw:xqltoy car across the floor for 10 seconds. At what times or time intervals must the r)l+ :z3aqy)( vtngtx vwts.: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 toyy yvcj x6b(*b1e8uh4 60 km/hr in 4.50 s. Which one of the following choices best represents the a(e uby18 b x*j6yyh4vccceleration 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 ld0e ,yaysg+itk+a .*curve shown. Which of the following statements regardin lgt a +k0eid,.*yy+asg 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 move oabi(fuj. 11c:v qg0 2m*xvrds along the x-axis according to the velocity versus time curve shown to the rightx dri.g m0f:1vao (c2*jbvu1q. 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, ao*h ikoe 18p2q tennis ball is moved so that the angle between the velocity and the accelero2oiqk*81p h eation 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 150 kilomev/fiz9go oz 1)ters apart and traveling toward each other.)1 oizvgf/9o z
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 acceleh oi2yu3+n- esix9,s iration is positive and incr-,ssn2 h+yu3i i xie9oeasing

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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 velocitodj56lq p .4cpy 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 folg-fc +eg8.lb wlowing choices ident8e.+ -gcblgfwifies 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 moves hybk ;w0x (kwdog5q :7$3.0\;m$ 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, ie/9e7fd, eoy $y\;vs\;t$, graph for the motion of an object is shown. What would be a reasonable equation for the acceleration that would account for this motion?


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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.31: A car moves to the right along a one-dimensional track for total ti /q 1k*e3pim1tjp*bvh zl(wa6me T in two par ia1jvle** q(h1bp mp6w3tz/kts.
• 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 gkf(: bk(9w o3vfzb,e kraph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the ca :bkb(k,w3voz9 fk(fer 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 o q6-7cp8sljn(x:4sua1 rkp cmf a car on a straight track is shown in the diagram. The thick line representap- n(:m41cjc us8r7pxq s6lk s 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. time graph sh zd.nr s:h8f(hown. For what time(s) irfzh:.8( shdns 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 gk1;mmyabst3 5 raph shown. For which timsk 5m;1baymt 3e(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 tq rxmjny74ae*89tv(v 5irtxlj14 fo 2jd7m2ehe area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for that obje5 qvidt12 *xyt4m9fn72jlj84( je e vxmor7arct?

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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 htccwel-(x:1-gznd 9yorizontal line with increasing speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a t.s0 q n.n73iydathj l;38grc mrip 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 bd 5v aprt3n6y5:ka:sand 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 reacfedt8ch1 /g x wbg-1e4hes 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 mt5gw/5fdum g 4s ybp7pn8q;g3oving along a horizontal axis is shown. What;sp /75w3m tb4gg ygpf8nuqd 5 is the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifiesna9:axa/1kf8uta oq5 dm;tx 7 all of the listed situations for which there is a non-zero aa x n7t15kaqmo:f9t;/auxd 8acceleration?
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 m 0d py)w9meh6along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displace e0m)6dy9mwp hment 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 li)h9r:0 gcmbc4rj1fhb ne vs. time is graphed. Which one of the following choices) 1rhm:jgfhb40b crc9 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 tov*x4u3 w xu+t2y(jcu ql +bk;o the right on a horizontal track, each with constant acceleration. At an instant of timequ2bty+*ocw(u43 + u ;jxlxk v, 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 adba4gq. v+i-qj a3pxuf syw- qi/n43/ position $x$, 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, whxk s0um6 u98pyich one of the following choices correctly describes the relationship between the average speed of the truck to that of the cau9 ys0p8xm uk6r?


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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(. qiix.q- u4hk pwlw/knq m03 instants of time, at which the car and truck travel with the.iukwh/nx. q(qi 3k0ql wp4m - 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 will move along qm0 w id4d)*d2 qn fdhnc*a/l.drl *: z;tlu*cthe x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly idqd*qa*02rcn dl dh4.tcz dlid*lnmu) ; * :fw/entifies 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 movinghu zm*/ fdq-x1cg y3.s on a horizontal line is shown. At what time(s) is the object moving with xfs/3*gzc d- .hqyum 1its 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 z3blszb40-dfq kqy1hc.mallw95 a- ; the x-axis following the position vs. time graph provided. During what time interval(s) does the mas-4 d3.blckzh;sbzamly9 5awqf q 1-0ls have zero acceleration?


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