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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 circularyksg; 3sz;/wk 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 un64 ih7(c 64la4 p8bovn fcqlpj3pmms9it time without reference to a particular direction is qmla8ivpnm 6slc6pcf(4obj 4 47p9h3called

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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 gnz/8vg j c3go46 7lzispeed of 50 m/s and then completes /4c768nzlogj gz3 gv ia 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 consx1r 6(ckrnd7 otant velocity. If it continues, how far will ito r6 nkdr7x(c1 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 plz gn 95aa4qa+mank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts maga9+ naqz45walking 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. What is thv46- v1aknz,,j0 j txgli8ple e averagep0 jnz6- l,lvig1vtaxj, 4e8k 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 motiupzt5 1vuhoh:i.xy 85on of a toy car traveling along the x-axis. The graph shownhi :1h5oyu x58 tpu.vz 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 toy car traveling along the xguvv 9feqy1/znb0 af , )ynah,jy53b:-axis. The graph shown below is a plot of the car’s velocity in tb3eby,/1afjvnh)f059 nv,qauyz :g y he 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 refd 00zg9z+p j ylqh4 eep/3 rwejh6:,zyers to the motion of a toy car traveling along the x-axisyeezphw z6 3lj0hqrye+dpg:z,0j4 9/ . The 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 velocity vs. time of a duck flying due south foruewgfs7 2shz 8+s7 bk( the winter. At what point did the duck stop its forward mou(2hsb 7 gsse7wkz +f8tion?





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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 iwuf7oii ql1nj4t1ijgh ;7u18 xf6:t v4u5i cdiagram 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 during the third second? to7u1 j;igw cu6t4 vq:ixfiifi741 jnh581u l


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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 whj: .,; 0poh vo xk uyj3dxphkjp0c46y;hjdg+ :ich 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 yyj:x j pg6,k j+hh43xoup0kohp .: ;vcdd0;jinterval 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 forx +nt dfj,.2rx an object with the position time graph shown in the xnj,ftd +x r2.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 information. An idpx;-; hi jm -pdlt3zn:-raj1deal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its origina jli-dppx;n jd1z:h- rtam 3;-l 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 ay.:lsk1* ucu .dlsw )refer to the following information. An ideal elastic rubber ball is dropped: dlcsus.w*u 1ka)y. l 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 travel wru ,jmfrazv9 tka8 b-3(5f(u;(gwcnlith 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 nmp d .a7a5 fw)m.v93h3j )twjg;vgre the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refer uc(ple/coojx))*4iod ) ,6iku m;buzs 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 followi k+lr/wkuk p38ng 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 scenario: tm)0-6o zpjog 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 tafce,:3 h hexo.ble top and off the table :.fehco3he,x edge. Which 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 relatiyqx;i,.e loub6 .-0nczrmm0 honship between distance and time for an object that is moving along a straight line. What iomleh0yx-;rb zm. 6,.n iuq 0cs 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 distance and time obx3e3 rk7 ;dhfor an object that is moving alon3b dkr; 7oxeh3g a straight line. Between what 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 iso.7z0 q dixb)rasn20 o thrown straight 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 the object 7 n iorzs) x.0ob20qadwhen 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 remp; vg8p/tumxp7odi; 3ka(7 npresents a toy car starting from rest and uniformly accelerating across the floor. t7i dp 7apv3;;okm n8p( mu/xgThe 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 r/qkf6ypp;s8(yh0z mka 0 zj/y o:coc (epresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the a/:0fjz/y0z6(k;h pom (yscqcp ko y8 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 from rest and uniformly a l/ o;*4j-qczf(gsh pfccelerating acros -qcjs gzfflhop; /4(*s the 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 ball. The poa1ren6-dm;4o zk b j/lsition of the ball each k;o4e zajmr 1- lnb/d6second is indicated.
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. The position of lqob z/k 6wzdz0k49b8 the ball each second is indicated. /bw6o 0kzdq9z8z k4bl
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 moving 78s;vjfenz7 13zcxkz in a straight line is shown in the graph bncs7f;z1 j3z 7e k8zxvelow.
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 cir8;r-ty 9ji wlhcus clown on a unicycle moving in a straight line is shown in th; -rh8wlyji t9e 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 freip5r5llbrttnv7+t1 gl(:clvye/)h0*u1il iely 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 motioggs4 j5j+n8ay n of a marble on a table top for 10 seconds. For which time int5jjy 4 gg8ns+aerval(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 m1*j f20bk ahpal8(ttoarble on a table top for 10 seconds. For which time interval(s) did the marble hab*2l paa1ht 8t0 kj(fove 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 graphuhbh/ d v8)8 e d(wg6*r*qoqqw describes the motion of a marble on a table top for 10 seconds. qbh)6dowqvuhq /ge w(*8rd8*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 for a ty42m 6of ,5ju k-z+ mn/eb3r wzqb0ehbime 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 of an vcke .s o,;n0u8t/s6gvpw( $20.0\;m/s$, 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 mojcggrdv86 (so z*h7f (wj40cqtion of an object moving with a constantzcd gqwfc 7jh 6v g0sr8(j4o*( 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 the motwdd4g 5uo*+:xaet- z97 pdpution of a toy car across the floor for 10 secondtdp+-ux9z5pwedg:a 7* 4uodt s. 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 motioh/d7 9wf usy zt5fl+(tn of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second interval shownwtfls9 tyu zd5h+(/f7?


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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 gcf00n dkoda2 b;gjs85raph describes the motion of a toy car across the floor for 10 seconds. At wo s bjfa; n0cd52k8d0ghat 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 un/ +39b r er*t5gi7pdmghqf- ctiformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices b5gmq9/7 -hbptetc+* igf r 3rdest 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 velox/whyao;7v 4 tcity versus time curve shown. Which of the following stahv; o7t 4y/xawtements regarding 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 thekom7)h omxz *7hy6*hqj+tnv- x-axis according to the velocity versus time curve shown to the rh th)6n k+** mmx-zqy7ovj7hoight. 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 tennis ball is moved so that the angle betw+ n)p ydyj49uween the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this iyny4 dj+)uwp 9nterval 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 kilom4pmu1 twcd 33jeters apart and traveling toward each other.1 wpm34ujtcd3
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 o5w7a nogi9kq 5n the x-axis. When the acceleration is positive and increwn55 gi9 akqo7asing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average velocity is/owe4c gh3fvripw . ;w4ocvs/h* 9.et

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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 following choices idenwf;x:5 ucqzi .tifies quantities that must cu:q .zwif5 x;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 0uj2e )vuavz j4hq6s-$3.0\;m$ 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,( 0qzm+ (pnnsr $y\;vs\;t$, 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 righ;pr)qb 3bdj9 kt along a one-dimensional track for total time T in two pdbq j;kbp93r )arts.
• 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 6 rhs+itd91tt a car on a straight track is shown in the diathtr9ts id 1+6gram. The thick line represents the velocity. Assume that the car 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*tn2u9of3ga ez12an o ki snxz/n2 +-i for the motion of a car on a straight track is shown +xz92 /ou2iannek-2a1o z3sf n*gint in 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 motion of an ob+ wu+u 39utbytject given by the position vs. time graph shown. For what time(s) is the speed of the objectuy3u++u9twtb 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 brr2gwz0 + w;k0x( u:nhn *pmdk2 m sboa4h1l3gy the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal to 1do;ks 0w m0xnk+* zmr b(ruh gh:l3ga2w2pn40?


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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 t -j 5h9iqwfa 2zzw1x,p;aj*dyhe acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been d fd1ya 5xjh-j; 2p*qw w,9izzaetermined 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 incre)y r,d:aef;zxunf xnj.g/3 t +.se /hhasing 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 f pf(;6v 77cvsvu v:xcin 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 relec6bqqsz) 8fh:8-9,mtq s sxo eased from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reache6xw 8myt*6q 3) tbnhxns 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. 4hn-gt0k hca v97g sn0time graph of a particle moving along a horizontal axis is shown. What is the total distance traveled by the parti ks vhg0n479taghc -n0cle 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 l0x,:5 ysyzvr( h -0z3g stfnjb0g3lfthe following choices correctly identifies all of the listed situations for which there is a zvgx:hy(yb,3 jg-f00nl05tlrfsz3 s 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 5gubx /zu-xwfg33u8v an object 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 maximu-3f3g 8bxuug /vx5 zwum 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 a)4hejld6c3 6qxo13 z ukfzae8pmy)k j(l9t 5 xt the origin and its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the objetm6lekcd9plyj8 e3165zz(qaxkufh4) x3)j o ct 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/redb8a hg *6h track, each with constant acceleration. At an instant of time, the i6r8gb e*ah/ dhnformation 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,4 + j-nntgaaa 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, which one of the followqk o:ydf 4trpe10.w d:ing choices correctly describes the relationship between the average speed of the f0 :.tdre4: dowpk 1yqtruck 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 d22en2 ziy :edz(fihb/escribes the instants of time, at which the car and truck travel with the sam(h e/fbyizd2e z2i2 n:e 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 wilgcm9 tw6* di p.wzp3u(nbk0:ml move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for both tu 0p.gnimwpt(c:w36dbk9z*m he 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.x ((2jgsed j0a time graph of an object moving on a horizontal line is shown. Axg( eja20sd (jt 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 fob4;q1uds./tty gw3;k0sf wwfllowing the position vs. time graph provid.bt k1fw qs4t gdw;u 0ys3/f;wed. During what time interval(s) does the mass have zero acceleration?


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