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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 constanjf fb1k;ap ssj3h0 twk/;ktv6./r(tct speed around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit time without rebu t8-vof5 ,g6i9xpah 6f1w hgference to a particular dirt 5h6u gvo8hg-, xi6fapfb9 w1ection 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 po bqkkw-h1qqyoum9g2k r1)73-q+ sxtrack at an average speed of 50 m/s and +qxmkks 1u wqo3 r-pkgqb)o17q-h 92 ythen 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 0.80f)*3rhs n,zwq -hmi;l m in 1.0 s at the constant velocity. If it continues, how far h-;,wql* z )3irhs nmfwill 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 s-u:.oioy5l,dr lp :tm8u/f cq liding at 5.00 m/s 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 relap ,domfru8ot.:ul-i/ lyq5 c :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 400if423a,oa uii km at 100 km/h. What is the average speed of the fa, 2uiiioa34 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 traveling along the x-qk.olcxp -fsqj0oc:e ux8;+ +axis. The graph shown below is k j8c ;+x+.x0lefo-q:ou pcsq 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 t4l2 zg :;,cfk ldvpv+hhe motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x d:4;vc,df+2pghkv z llirection, $v_x$ 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 along t1qjaon en1ih(yt y- h5;w3x/whe x-axis. The graph shown below is a plot of thjxhw i1we;15n/hyq tn3 oy(a-e 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 d5bek+xw z1ik( ue south for the winter. At whatkx1(wi+5eb z k point 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 thbks 7fxp:t8um)oh6/7 z:wo ljo d)8dme diagram below which shows the position and elapsed time of a car starting from rest and uniformly adz o wl:h: xo)bpf6so 8 m/87k7mutdj)ccelerating 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 shows the position859f dpkji,nfm f.*ur and elapsed time of a car starting from rest and uniformly accelerating in a straightifj* 8k5mn9.fd, rpfu 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 rqopc45 3 s;vpthe position time graph shown in the diagram at opqspv 4c3r5;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 t(rk +mth9v7t ao the following information. An ideal elastic rubber ball is dropped from a height of hatmk7 r9t(v+ 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 following itg-n *tih)7de nformation. An ideal elastic rubber ball is dropped from a height o)en ht*t7-di gf 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 with a speey9kctsaggzzm 5/, .l3d 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 followinpz0 uawkgnweyn3h34- l3pp .+ g 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 refers to the following ssx.xu1a lyq .za3 u4c)cenario: 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 folloddz7:i yjo0 ow4 0tbr.wing 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 r8iynp 3 v(c)vtefers 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.
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 tuse3lt.havas :m-().zuu -thorizontal table top and off the table edge. Which of the following would best represent a graph of the magnitudam h3 .(szstu- ult-u:) aev.te 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 relat a(3tu8vy g2ebionship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the ov (ye23g abt8ubject 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 relau +sq gaqr4k9 e4on:tbu2wlz(7nte 5;tionship between distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero aao s7 n2kt;wqure 5g:ntul b9(+e 44zqcceleration?


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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 islfy)p5 / r9wco thrown straight downward on Earth with an initial speed of 12.0 5y w) 9cof/rlpm/s from a position 10.0 m above 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 b v nx9zlsk/h1.elow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from h ln/x19z.ks vthe 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 r *;udys yl, 9/l o+e8mud-nxpkest and uniformly acceleratike uud8- * , l+9msoxp/l;ydnyng 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 r- 8x sn8+6tq jmnuonx5epresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveleon56-x jm8 tnus n+8qxd 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 accele76jf 21 lbst kc)4kygsdr0e t2rating ball. The position of the ball each see2 ygc7skrj16)02d 4klt f sbtcond 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 uniformlyx7.e 0bxzv 4b;bwnv1 e accelerating ball. The position of the ball each second is ind0ebebnbv; x4.7wvzx1 icated.
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 clow3n0dq)ihzb; 16p bh *i j6fdpwv lb*wl.o4(nwn on a unicycle moving in a straight line is shown in the graph below. dndz in6i*wpp 0(w46hol*l3 hb;b.qjv1f w b)
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 moeb.woq tod(c-b+k +x :es12vkving in a straight line is shown in the graph bevkxedos-+tbe owkb 1 (q2:c.+low.
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 ner)84f e*dmyw var 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 marble on a table txw5ajpxsjwc yasfi/e9 4 /u;k0pl. .+ op for 10 seconds. For which timepscj+jp4 a ww/0f; eislux./5y k9xa. 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 describecw) a,8f hpo9vf8n,n ls the motion of a marble on a table top for 10 seconds. Fo pancnovh89) 8fl,,fwr which time interval(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 yr0 kcuq);ua,the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 s) ; cau0kyruq,


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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;eut2itw 3) k0xdmxf6 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),9 jzz4pxz.hwwfrq ( straight 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 gq .35mwkc7s oxnqh x7m- wb95sraphs could correctly represent the motion of an object moving with a conm7wq m9bh7wx 3nxsqc5 so.-k5 stant 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 motion of a toy car acrlas1xbu pww-3pdo; y4qmdh4x2t:t52 ot-9u d oss the floor for 10 secono9bs 1om d-;wp5: tdu htl32 2dwqu xtp4ay-x4ds. 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 theljm 8v1nl: b;r motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for thnl1; ljvb: 8mre 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 across theii4wsk-j,. a+su *u bc floor for 10 seconds. At what times or i u,*ab+kwsuic-.sj 4time 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 acceleradq k70q13buml4bfw;b tes uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleratio4;1q37ufbb b0 dl mqwkn 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. Which of the follow8hm5p )oes tx9 fj: nc:vlg,*ning statements regarding its motion is NOT CORRECT:ofn*s ghltv5j)x9c ,:npm 8 e?


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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 according to the velocity versus time/k+ ojjobuc -v e75e4p curve shown tp4 kc-uoo+ 5 /jeje7vbo 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 tr/dzaypbrm st - .o6js+0 -ej70 fup;oennis ball is moved so that the angle betweer+ z.0y;6 opod jbt-rja7e/fpms0s- un 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 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 kilometerj0ib/. cz yc2,dxhydcbgl +j/xsk/ / 0s apart and traveling toward each other.y2j0dc/ s kdjb0y,./z gxx l/ic/+hb c
is moving at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.04: A particle moves on the x-axis. When the acceleration is positive anr054nm4pz/vf,tmgk4 v*j ysd d incfps5n/r z4y4vkv ,mt0*dj g 4mreasing

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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 aonc5(oiu+y w3.; uhi,x)ruxc verage velocity is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in twom8ifws-ino8 qr/-t d+rc*l 2 q dimensions, which one of the following choices identifies quantities that must have the sa*8rfd2 r -8si+lwnto /qciqm -me 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 c2 6ds 0(fj/(pomqaui $3.0\;m$ 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-tims;rcc wp04ieh4t1: 9 wji 7hste, $y\;vs\;t$, 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 thnq rg8-/l chb(wewg4* 6uwt f(e right along a one-dimensional track for total time T in two parhqe8t(c wf b*nwg (6r-u4/l gwts.
• 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 fo fvvo n:i;6)jmr the motion of a car on a straight track is shown in the diagram. The thick line represents the velocityji;v )f :mv6on. 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 for the motit t wea+w, f -n81,7oasivwq1con of a car on a straight track is shown in thwqesta-7 a1 io ,nc8fvtww1+,e 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 object given by the position vs. tim8(qgv 9v9ovb xe graph shown. For what time(s) qb(xvg ov989 vis 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 graph/-e3dpn+5 x fdlcj-riu,w 6is shown. For which time(s) is the acceleration of the objec iux3pns/6 dw -lc,5jerf +-dit 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 v27z2t/zbc. *pp 1)wes ht5s66 *lbnzvaimaq is. time graph for a fixed time interval of an object’s motion, what q2pi5n/qz sivm*)1 6zcbb6 lsp2 h. twz7 et*aauantity 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 horizontal line with in 6rz,lefdow., creasing 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 twoz6 0 d.la0od8jp)x wnw09m,e nrc;l md 6wqm:w parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the ground in a time oincpr, 9btf( 8cee4 p6f $2.50\;s$. 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 rz 0fn xyje:6t3est 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 graph of a particle moving along a horizontaczbrtzednc:(;6b y, 0l axis is shown. What is the totalcd:tze0ybrc;6b , (nz 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 ideq7i86yu8gr : dj:vmccntifies all of the listed situations for which thery:c c7u : 68vgqri8djme 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 ob1d2 amfbbc)sms;3 q b/ject moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displmq)1c;23s f mb /babdsacement 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 velocito;+fcokp vtb2v iqeq)z*7 7wm* ksf7+ y along a line vs. time is graphed. Which one of the following choices best gives the proper *s7b27kv f7o; kq tef+)cvpi zo*mwq+ 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, wqh o,u+v7vfkh 33qh+each with constant acceleration. At an instant of time, thq733 v+hhfwq kuv +ho,e 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 a7m0 :us1s raieqsi5 -.oh.wjm 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 sh:9v mbm t.*fhxown in the graph, which one of the following choices correctly describes the relationshiph*mb f.9mt :xv between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describgav,i2hr)c)q fsym0i z *8wo/w2k 2gqes the instants of time, at which the car and truck travel with the same speed?*2/zik c),g2qy0vrms2gh qwi aof) 8w

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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 origh7eivp7f .cg6 in and will move along the x-axis. The ph77gvi.e c6 facceleration 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 objirg1r0etj)waf9,td a i472a iect moving on a horizontal line is shown. At what time(s) is the object moving with its greatest speeded w )20tiif91aija 47,gtr ar?


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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 pos cdu a0ep)xw)8ition vs. time graph providedw)x8d)c 0ep ua. During what time interval(s) does the mass have zero acceleration?


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