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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 aj l2kvzl,.o;;*sll jx 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 distt hgv)d -2do:lance per unit time without reference to a particular diho)-gl2dt d :vrection is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular track at an average .w2 ezfn8c2rc pzu /4hspeed of 50.z/ uf8zph 2n24c wcre 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 in 1.0 s at the constant velocity. If it c :,vgqbeeic7i (a9 iz3ontinues, how ,cvi :beqe9(ziia g 37far 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 on a 30-kg plank that is whe9kq/1-kjasliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rat/hj9 qw-ae1kke 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. What x ahhl1l ;a3pyo ;bh x0awiay2a52/6 iis the average speed of the motorist on tw10 ah ayabli6 ; ;yah2xx2a5p /hi3olhis 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 movdze/yze2 fy(0vnph yo8 *2-o tion of a toy car traveling along the x-axis. T y8-zpnf02vdo*2v/yyehz o ( ehe graph shown below is a plot of the 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 motion of a tci*ad9s e35di oy car traveling along the x-axis. The graph shown3cs*i e d95iad 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 a toy car traveling alob f5mr r(w9eh(ng the x-axis. Thr59w (erb(hmf e graph shown below is a plot 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 velocfa*7(znvk7je*2 j wlf ity vs. time of a duck flying due south for the winter. At what point did the duck stop its forward moti(k7v*ne*j lf2afj7zw on?





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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 diag52: mn 3,izg1w2pyinu kzhs 7mram below 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 durinun3gm :1wky75n z , 2sihizmp2g 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 diagra 1 pj8/o:u j8g3c:8 fijsvkkiqm below which shows 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 isp :uoj3cgisiv88 1:8j/k jk fq 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 sc6gd: b;bha:vx 8 0v jk;-suge 7v:fxthe position time graph shown in the diagram;76b:g:hsvx0u fcvks; xj:e a -bdg8v 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 k7ubz.cdmr ,1following information. An ideal elastic rubber ball is dropped from a height o, ukc71m.zbdr f 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 followiowfhffi.vrp/6w:awbpz 0 5 3 .ng information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hitobf:w60 5/ 3pivwr a.phfzfw. s 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 travel with a speed of 4ki ezw.k6j( s2nhv1w$v$ 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 scenario6s0fd/k77j 7ingk s as: 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 ty mo7imvhz 74:he 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 fmx 0 xyb:tc(ef / sgrqjdyov1fc;-/;;ollowing 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 thzz(n r*v) ydhc;2tim /e following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls dowe,,k+ dh1 uv1wmll-atfz +/xj n a ramp, across a horizontal table top and off the table edge. Which ejwl1-/+z+t m ,1,vulfkx dha 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 between distan8e0 jmjm2h.vt ce and time for an object that is moving along a straight line. What is the instantaneous speed of .vh0tj 8emm2jthe 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 relationship between distancu+kk z(h u5wuu-f8 z*le and time for an object that is moving along a straight line. Between what times did the object have a non-zeuu+w uz k5 *fz-h(lu8kro 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 xk vb*8k ,sq;cinitial speed of 12.0 m/s from a position 10.0 m ab, ;*b8vqkkxcs ove the ground. Ignoring air resistance, the speed of the object when it reaches the ground is

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represents a toy h55m4fqn t8djcar starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram. jdm t455qnf8h
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 belwmzv q4y7+k0dx)7rx,5izo s*o z8ze row represents a toy car starting from rest and uniformly accelerating across the floor. The time and distanceydsk40qore, z* +wz7 5rx8m z ix)zo7v 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 starting kql4* g ()1cyg)wq vvnfrom rest and uniformly accelerating across tq (k1gy* qv4nvgc)w l)he 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 uniforml: ag .+e-doxe7l -mdjfy accelerating ball. The position of the ball each second is indicated. e -mxa7jdo.d+ -lfeg :
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. Thelq kqy5ag1-6 n lbs)q6(qhh0z position of the ball each second is indik(nh g6bz)l q s5qqha0q16 yl-cated.
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 cmq ltsz-1f*c)u;-0v mcb d:pwlown on a unicycle moving in a straight line is shown in the grap w u :s*vmf;tl)zmq-c0d-pcb1h 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 ciri e 5spb2)fv4rcus clown on a unicycle moving in a straight line is shown in the graph belos52) vfep4ibr w.
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 aa iro84v3 l/wzs.dg*qnvk.. 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 a marblev5-dnl+d qlswtt1 .h5 on a table top for 10 seconds. +l -s dnvw5qt h5lt.d1For 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 de s75xk(ju9 gslscribes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble haju75s slk g9x(ve 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 yv/q-o8arlj *graph describes the motion of a marble on a table top for 10 seconds. Wo* /yaq-8vjrlhat 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 uniformly from rest fo(kjq5c ;h q0vgr 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 speed our-nq v* sax( :(1jznrf $20.0\;m/s$, 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 rdo; (:21hqhvy4*uj w nxjhm y5epresent the motion of an object moving with a constant speed in a straight li*2qh1jh: h 5omuvyx(4d n; jwyne?


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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 f )k b k)6hlf1h0mj2b:rkh,rwof a toy car across the floor for 10 seconds. What is t:fwmkf,rj2k6h lhkh0b 1))rbhe 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 motheo-:k-io pa/iz 60tuion of a toy car across the floor for 10 seconds. What 0ooatzi p:6eu- ik- /hwas the total displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the motion of a toy car acroshwq1 g(bhwv(,kuwi)+u ov0z+s the floor for 10 seconds. At what times or time intervals must the net force on zuvi1u (( h0,o+qk)gvw whw+b 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/h ul8q1by-pp q)(hmrk. r to 60 km/hr in 4.50 s. Which one of the kh)u lrpy- 1qq.pmb8(following choices best represents the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time curve shown 728hz-i8*ghh s aheoww(6wmn. Which of the following statements regarding its mo 2zg -s8(ohh*wawh8 emi7nw6h tion 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-ac f vn )-vgrx2 6*(4p,:dfpqvv xqkqm;xis according to the velocity versus time curve shown to the right.d-q :nxv,*qr 6 f; fcp4p(q 2vmgvx)kv 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;t*ope my29 vy, 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 e2;yoyvt p*m9 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 of) cvpyett- ),ther.p ,)v)fty -etc
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. Whgd) .u*udmv j +n2/mlz7v kxm7en the acceleration is positive and increasi2d*vj 7 7/muvuxd mg.k)+mznl ng

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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 velol g/6sd//mwiy,qi9 njgvh;b - city 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 on: aos2c,z/kb p*,gb zre of the following choices identifies quantg/2 s,zba,cp k:z*broities 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 v5q8 f/gvigaie b81t xy47 ;zw, yn3d:*bwwmm$3.0\;m$ 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-t2(gt /y n5ra-fii0v rhbv/5fpime, $y\;vs\;t$, 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 at. b8yt7y.jbyl)mx v 9long a one-dimensional track for total time T in two parts79 )m.bxvj l.y8tyb ty.
• 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 odc+,sz c-zf+nih /i-sp) x; za straight track is shown in the diagram. The thick line represents the velocity. Assume that the car stai i-/dn pc+)z;h-scz,o+ fsxzrts 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 aq. . 6ceztx2gcmpu 2(pa-.-ovoh8k wd straight track is shown in the diagram. The thick line represents the velocity. Assume that the car stax pmhc2-6d kpqoa ztogv 2ue.w(8c.-.rts 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 jy k.0 dbriv ho7:a:tyi y0al4v)// leposition vs. time graph shown. For what time(s) is the speed of e.l7ay0:t ly4hdv0 i/) k:ji ro/vbaythe 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 obj5,gqs6u6mwna ect given by the velocity vs. time graph shown. For which time(s) is the acceleration of the,gmn6 s5aqw6 u 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. time graph for a fixedx vy/asojhtk2/; j6 -n time intes 2/jh; nv ok/xyt-j6arval 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 moveak;ra lr3vln/v.e1 * js along a horizontal 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 trip in two par;do8. 2 dsd,hiwpch5f kx:e bk:2 h6gpts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the ground in auj88npr 5d*r k 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 reachxk/wh8ybq w9:0vy w /des 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 moving along a horizontalw2/bu9yfs4e o2p ,lxw axis is shown. What is the total distance tre xfs puoyw2b4 2,lw/9aveled 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 cor(l+;digtk1m6o)dnfye/ dm t) rectly identifies all of the listed situations for which there is a non-zerod;fd(m/tomei1k) n y6d tlg)+ 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. tify jnx-zp6.(ime graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) dozn.(ijp-x6y fes 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 byx1nplpg+( . and its velocity along a line vs. time is graphedp(n.g+ lx1pyb . 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 moving to the right on a horizontal track, each wvq07f5u f kt5cith constant acceleration. At qft5 f75 vk0ucan 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;s5xw(uwig g ,0m9c3hsxk7 bn a 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 t1 ojcz702l vxvime shown in the graph, which one of the following choices corr02 vzo7 xv1cjlectly describes the 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 following -q;xo(qzgwvs:u bl6-choices best describes the instants of time, at which the car and truck trave q z:;xw-q(6gb -volusl 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, eac imb1 ntj-)j-ch start from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which onmnc )-i- 1bjjte 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 gg3 ji9dc 1z q*iad fryg9s7pzj7(g6; qraph of an object moving on a horizontal line is showndj qi 9d 6(az p9zsyi 1gq3gc7rj;g7f*. At what time(s) is the object moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position vs. time graph *npwdr -l2 eb6provided. During what time interval(s) does the mass have zero acceleratw- bl*nep 6d2rion?


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