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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 an-1mrkv, 1yiyround 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 unitma/y;fn+crqj/- nz1 r time without reference to a particular direction afj/r;qrnc 1 myn+/z-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 tra+z amh,erj vcnd5 dwxe6:,0 a4ck at an average speed of 50 m/s and thed :e4 z5,an,r6ec m0a+vxwhj dn 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 consta76/c5lcfivao,.: vcrdpc 1 qmnt velocity. If it continuesq ldcavi.pf5r/vc 6cc,7o1 :m , 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 on a 30-kg plank that is sliding at 5.00 m/s w-fie.oxph:j- 0d .09+nt mif ai bcz:to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank rela zn0e ifc: fipo9xhb:. .-m wit0jda-+tive 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,gv0;r4h gvlv. What is the aver,hl4v ; gv0gvrage speed of the 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 toy car tr:ssay)* l0pr,y4fy s oaveling along the x-axis. The graph sy4)oy , rps 0faslsy*:hown 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 akw2i 3:ue 3hzo toy car traveling along the x-axis. The graph zkeo ui2hw:33shown 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 zmo r))n,l7z 1to, cx3fhyzb+d:7 rknrefers to the motion of a toy car traveling along the x-axis. The graph shown belowhcrb,lzntdo7 nokyz7, m3 fx):1zr)+ 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 velocity vs. time of a duck flying due soutjugk ut; /6:7mpmxs a5h for the winter. At what point did the duck stog: 6jms/am; x t75uupkp its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which shows the position aw x**-ngxzv1 8vqeohk k:ah,6nd elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during the thirqw*,1nhge*a kzvox x :-h68 vkd 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 whi .peky zw3d)5uswb;k:ch shows the position and elapsed time of a car starting from rest andkz kp)seu .d;b 5ww3:y uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time graph for an object with the posiuzy94hj 0thtt8o.r7m tion time graph shown in the myhto . hz9j70tt8 ru4diagram 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 information. An ideal +9mx)a6ifwwq elastic rubber ball is dropped from a height 9xmq+)wwfa6 i 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 folw3my :nk pu9-u ku1zfuvh(*i 0lowing information. An ideal elastic ru9kh-p1wz:k*yuu0m f(n3 uiuvbber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can trav 04j hwbxp/f3kel with a speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the following j5,/dih y 3mklscenario: 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 followi;mcoh u-,h *zdng 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 refeizm lp) *.ott.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.
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 f:gu7o wmu+jws0b7/(5 ilhm ggollowing 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, across a horizontal tab (s8+rfqp8 ltsle top and off the table edge. Whi q8lprtf(s+ 8sch 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 distance aj;cbg.wvj r5 +nd time for an object that is moving along a straight line. What is g.w;vj +j5cbr 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 relationship between d,f d82 jsu / n;shjgcr;/papt4iz;,/obq5 nevistance and time for an object that is moving along a straight line. Between what times did the object have a non-zero accelerar/28q;/z, j i/5pjeg b 4 so,usn;v;tadfcphn tion?


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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 ia qws(8bfq1gwfdv1l9q :ip4 ,nitial speed of 12.0 m/s from a position 10.0 m avs14dl9a fgp q(1bw :8i,wqqfbove 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 car starting from rest and uwbyu0x4e bo pj kqq*4/hur2a 9/*;ar oniformly accelerating across the floor. The time and distance traveled from the start are s* /q/brpk0 xh* ebo;w 2u94aq4jouryahown 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 from0wxz0x/xmof6;mn n bmg:3 o3b rest and uniformly accelerating across the floor. The time and dist;0 3xon: 0x wg mbfbzm6xm/o3nance 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 st.. lptge:j2uy arting from rest and uniformly accelerating across the floor. The time and distance travele2.uplge:y .j td 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 ball. The position ofi *9ubph4f5p-x mn ayi*5br9 xsos 4pkcu6s97 the ball each second is ibi*h9abfr ioxn*yx7- 4mu9 sk4p5p us6sp9 c5ndicated.
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 accelerabi./e3ql l4f wbmt2 d*ting ball. The position of the ball each second is indicated.ieqt*4bwbf/2l 3m l .d
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 mo pj5k/6x6jy7*ebu1yta g8zh jving in a straight line is shown in the 8jkj/x*6 yguz aj5 16 bp7tyehgraph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle movin1-+j+ft1ityhe z s n7og in a straight line is shown in t1nhoy1tt7i z-jse + f+he 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 objectb2x; d,qt oc +,xs5b4aqmz)vil(s3 tr falls 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 accompanyin g *33g)cktxbedb6ta3 g graph describes the motion of a marble on a table top for 10 seconds. For which time intge3g)3cdxbt*t ka3b6 erval(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 mowfo0k so.mbj+ we 5)3etion of a marble on a table top for 10 seconds. For which time interval wsbj5eo m.0fe3kw +)o(s) did the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motionplz aj qe4f641 of a marble on a table top forf6zlj14pa4e q 10 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 uniformly from rest fora.mxi qs ,w2g- 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 with71 xf4q f:)k(jh wuc*de xvy3/+vxy vo 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 grappw9 m) vh0. 01hbtpeenhs could correctly represent the motion of an object moving with a constae9 pbh)0h.1tvmp 0nwent 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 descre , aca:ld/ti6ibes the motion of a toy car across the floor for 10 seconlead i,/6ca :tds. 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 oho)8* bkr3bmnx o+ ky4f a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second interva+rnb oh)my38k obx4 *kl 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 accompanyingsb7 a( ;*nnl5w5eoaf*( dgtjo graph describes the motion of a toy car across the floor ne57f;b5gwo *(* tasla( dj nofor 10 seconds. At what times or time intervals must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. no,4 x.(lecuw ig:ki)Which one of the fo4i l i,)oweu(xn :k.cgllowing 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 eb( 5 7vgmu cn+yx7fr:velocity versus time curve shown. Which of the following statements regarding its mo:+rv nycx(mbu 5g77fetion 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-axis acco) /r:c2uw5n obyga ybi)53zt ording to the velocity versus time curve shown boywt:/)og 35zr5)c u aynbi2to the right. 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, a te1r) szdrm*0o(d zs b+cx-8dtvnnis ball is moved so that the angle between the velocity and the acceleration r *dzb8+cm 0rxz sd-(s 1)dotvof 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 otnfib( ))gvj 8g, j*4uihzn*f mher.8ni4jn m jfvh )* (iugf,)*zbg
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 accelerou**kk1l 7b; ,g kdjyyation is positive and increaukkyoj* gd1b7k ;,y*lsing

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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 ik2xzg( x(z jhnh2+c0v s

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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 oa n6wxr6dvq8:9kij q-ne of the following choices identifies qua:-a8wr6 6dkq9 xq ivnjntities 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 movemg5: + *xfmtqas $3.0\;m$ 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-tgp2um62 z2 bwqime, $y\;vs\;t$, 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-e0q x+7p6bno3ht b2j7 (jskpzdimensional track for total time T in two enxbh( 6p bjtos3z7+7 qkpj20parts.
• 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 t * foqce4;pcy++jgy+fjl; 5m a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts at or4p jf ycglc+j ty+mf*;5o+qe ;igin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of a car on a straight track ifm e8l g3:i9er+;tl xls shown in the diagram. The thick linmeli3re x+ 8 lg:flt;9e 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 motion of an objw(i; nif x -l/l7*cxuuect given by the position vs. time graph shown. For what time(w(ul ;fxui-cn7x l *i/s) is the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by the velo/ mmomfgd90a fy14xkm0 xf 78gcity vs. time graph shown. For which time(s) is the acceleration of the object equa1d7mgg m /9f4f oyfxm080x kmal 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 undehy5 iaxpr ;g1 v31:oopr the acceleration vs. time graph for a fixed time interval of an object’s motion, what qua 1arpvooh:y1gx;53ip ntity 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 horiz5d7agloqr)- 5tacg f4*tvo ;kontal 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 tw33he/j6n0bmdm 40w lmvio s i8o 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 frotf-h7 5 p lm e+)2cdbhd;vjmn/m 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 k)uvvl7; epag*ups( gs2 qh8:is released from 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 grap3p0;c/l; fdpxdtsfw *h of a particle moving along a horizontal axis is shown. What is the total distance traveled by the partilp0cpftxd/dw ; ; f*3scle 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 choice lk*s8*tydsw6)mc t9cs correctly identifies all of the listed situations k)yc m*ds6ttw 9s*lc8 for which there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving alo55wzcs4 -u xqnng a line is shown. The object starts from rest at time t=0 s. At what timez4qs c55xw-un(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 lx1(f pgrk-)el ine vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for whichp (-lfe)1g rkx 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, eac 1/rt*dq +gtkch i)j/yy/a z8ah with constant acceleration. At an instant of time, the information about the caazkd+ h ytgt*8/qr)yj/1/icars 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 positiubuwe1d rnu*+,s3 c 3con $x$, 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 timektt2x49lt bc9 shown in the graph, which one of the following choices correctly describes the relation2 ktc9t 9btl4xship 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 followin+nfg;v hl.uh)i5pwg(r0 *n8 g/gw4 1fm boae zg choices best describes the instants of time, at which the car and truck travel with the same spe*54n g /ep h.ihar;vg g8ml1nf)0w zobfugw(+ed?

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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 wild j -s/kwd(7rt+ nxy:;whzo j7l move along the x-axis. The accelek;wz/s7 j7yw :tj r(ox- hdnd+ration 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 h1lwit qtw405 a horizontal line is sw 4whtl1 q05ithown. 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-axisqx/mv rcvlu6gzkz mcm:ig9. (05 +pn5 7- esni following the position vs. time graph provided. During what time interval(s) does the mass have zero ac nnpxm-.euqv6gvz rc/k(mmi 7:c5g 09+sz l5iceleration?


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