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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 around a circular path of rsyq6 efrm/:q1ca3 ez:6a bi+tadius $R$, 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 unitctqa)9vf0 tq7i q r3*h time without reference to a particular direca 3q *qhvfirq)t7t9c0tion 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 l6 f(argq37tlm, :z jqf p40mgrap around a circular track at an average speed of mf063j4t lqqmr( z:rafg,7 gp50 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 t l 4w6v7q lyl(hfhp,3i(axui:he constant velocity. If it continues, ho, u(v iwlq l(h6af:py lh74x3iw 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 3 neqjmt0 :,fy*h qu,/vi*iabstationary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plana*fy,uq ivq: th0i/bejm*3n, k. 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 kmx6r9p nnhr):l/h and 400 km at 100 km/h. What is the average speed of the mo)n:lpr 6hx 9nrtorist 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 toybq851l us:9ywzz3 v7f / fji, klonmo8 car traveling along the x-axis. The graph shown ovzky : qosfbmf3817 ,uli z8wln/59jbelow 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 to1 11;a ygg2pg2xosf b;5tmgl hy car traveling along the x-axis. The graph shown below is a plot of the ;sg 21p2 tgxlfb1mg hgo;y a15car’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 trave vhge:gba,hv ;s/.* bbling along the x-axis. The graph shown below is a plot of the car’s velocity in t,h*bbgg.s /:e bvav;hhe 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 :)c;. iv ciwdgof a duck flying due south for the winter. At what point dii.dv;cc:w)g id the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which sh w m8wx,7k/q(r)dz gra ;av8wnows the position and elapsed time of a car g/,k)( ;xwwmw a7 rd8arznvq8starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during the third second?


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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.18: This question refx- 48ctdgi 8lj.irh1a*d9i oqer to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerati.94xgo dj *8i1rqd 8l -achiting 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 graph9 y :q-yq ayz1og8z/bv for an object with the position time graph shown in thqbza8 -y9 /voyg yqz:1e 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 follob6*a:ynetn 9x wing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to it n*tb6n9:x eyas 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 information. An ideal elax00mauxu pe 9/4/uill stic rubber ball is dropped from a height of about 2 meters,04xx0 ua im/pul/9ule 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 speed of rb)b.pk,vtj 9$v$ 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 t. xkgt6 5kt6k7fl naw8o 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 refers tycl ,jj s97k8oy:j52x v.kgnl o 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 to2n: 9p8qf,cv0;nlps doof,y r 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 following iei7oq*p8r k)v/6srrt1ffv / 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 table to l.eufx7ue5f +p and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's acceleration vs5+leuu7fe x. f 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 and time for a 5 l. otu7-nn* m 8jiabqfo(qk;oc;)nln object that is moving along a straight line. What is the instantaneous speed of the object uq5llki.*qj7n8fm-(noo bo n;)cat; 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 timv,/s5 t sw bum 4(3ke8tdgnx8v)tsd9f e for an object that is moving along a straight line. Between wh wdsxb dst3s8k)ttevgn48u(m/f 9, v 5at times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an initial spemonb3i: ojf2jh ly; 2m2z93lc uz+c4yed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when it y2: oyi lfn+m32;l9jh 2z3zc o4 ubjcmreaches 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 univmxn/65wt 7 cuformly accelerating across the floor. The time and distance traveled from the start a5w/u vx7t c6nmre 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.w)xfs s9ccy57clra 1 kumv8r3cnp. d (, yuv8 starting from rest and uniformly accelerating across the floor. The time and distance traveledvycsfp 8c38vu(cx.7),rku 5d w9ac1 mr.syln 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 (a/v)d5cjksicwo.0z2*w zvb car starting from rest and uniformly accelerating across the floor. The time and distance travelwk av) c b*0zd2zi5/.ojcw(vsed 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 acce(ojc+f8 qqox+lerating ball. The position of the ball each second is if jqxq(o8 oc++ndicated.
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 shbwnzi 1 wyl 6z0dq,qmz 4)bc,4ows a uniformly accelerating ball. The position of the ball each second iic4qd 01mw w4z) b6zn,l zq,ybs indicated.
Which of the following is closest to the acceleration of the ball?


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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus r,tbmipg,,0ob bbcsc0*- kv+ clown on a unicycle moving in a straight line is shown in the g*r -b0b+,,0vg tpiok, c bmcbsraph 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 g2 k d)pamj:8ky4 +p75zlwk kfon a unicycle moving in a straight line is shown in the graph belo)pkk ylk7m8kw2+p5g d :f4az jw.
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 98yj4p b+nselvexv y:p(9 0yra 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 th+* dlbyqu9:k xf6x0n7f gvti*e motion of a marble on a table top for 10 seconds. For which time interval: 9uif0txdx*7 lnkqyg 6+* bfv(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 accompanypk( osts6-g (b03kyaring graph describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marbl gkys0b36(to s-a (prke 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 modwx,lhajvlcu-j8c5 w z2sozq33 0 v.4tion of a marble on a table top for 10 seconds. What is the marbles average acceleration between .-wqxzw4z al3c dc8j2s huv0,l3 ojv5t = 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 acceleraz *pcjg// uf3vtes uniformly from rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with a speevi u((srjf mk5)0 chz9d 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 bx) 1 d3m,iv1iwo5abj: ybv.qgraphs could correctly represent the motion of an object moving with a co 5oimvj3x)y. b a1dv,q1b :iwbnstant 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 across thhcph c98 .n4kle floor for 10 seconds. Wha9lhh4n kpc8.c t is the acceleration of the toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a toy car across the flowg0s4ym fqd6vdlr526or for 10 seconds. What was the total displacement of the toy car for the entire 10 second intem gq6yd rl254fs6w0v drval 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 mo44mgggobn z6eo6 4 0/a/jpcuntion of a toy car across the floor for 10 seconds. At what times or time inn4m/06 agz uoc g44enbjg p6/otervals 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 umgt lwpxk5q62h,/;k km/hr in 4.50 s. Which one of the following choices best represents the acceleration of the cak,h6xu/mlk gt;pw5 2 qr?

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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 cuq ga:blmiu8qcq;/9 d, o5 ro*erve shown. Which of the following statements regarding iq;8l qibcgrq*u, : 5d9a /moeots 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 the x-axis accordto mz6qx h8q9/ing to the velocity versus time curve shoqzho8 t mx96q/wn to 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 tennis ball is moved sc5qfzflk3s;s 7v x,thl 8k,j6 o that the angle between the velocity a7xvlkhc jlq3;t, ,5ffzk 6s s8nd 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 kilometers apar; mr8ak s.uz2ft and traveling toward each other.8a 2u;fmks. zr
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 posy +l q3dm)f)pmitive and increas mf)+l3qp )ymding

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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 veloc vkho2b--lf)qdl; mq3ity 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 0*l jd, nj7 (:4 qhj2zqziazhmone of the following choices identifies quantities that must have the same direction lma zq ji0*qj(,dhj4z7h :n2z?

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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 xo)iv0 5r jjss w.i,4+tmf jmc h5;im4f5 8niu$3.0\;m$ 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*ocizqt0 (y19zd) rau, $y\;vs\;t$, 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 alo9oyd h2 4b-gofng a one-dimensional track for total time T inoog-bd92f hy 4 two parts.
• 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 iu/ 0z7li (dkezr/8vidb)q+l( o7cicgraph for the motion of a car on a straight track is shown in the diagram. The thick line represents th qi/idi +7 ck( dl ilb0cz/zue7()8rvoe 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 for the motion of a car on a straight trac*kdst60; vjy gk is shown in the diagram. The thick line represej 0s6dk *;gvytnts 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( l2kd9bchg;2.klnx q)x*qmz the position vs. time graph shown. For what time(s) i; b.xqn l 2x dkhlc2z(q9k*mg)s 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 givh,fi5)irkx+8 2es 1ec3 lxgif e5s4aeen by the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal tfi rx2gexaf5h8e) c k5e1+s 4lse,3iio 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 acceleratw* hps4 r/v)/8 aplhwtion vs. time graph for a fixed time interval of an object’s motion,* )hpt/h4/pw8 lwrvas 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 moves along a horizontal line with incre.5mwt)q p 60i m7sd aszvrr:+jasing 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 parts)jpci7wy7imv/ :enx 8r1bt.t :
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 groun.k1f4a5el6jxzy ;.8 ,hjshq .p bmnyd d 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 res /dwmu/4 *o/pe0cg v)ah sh/hpt 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 ux1 ,p,(qmopq/ iwnj7particle moving along a horizontal axis is shown. Whaqp,o xw/ imjpqun7 (1,t is the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the folljzxxf vhur7k/lvi 9/by7/ d 7j4 yiqn,-qew)8owing choices correctly identifies all of the listed situations for which the nj wzdl7xr x/i, 7 y8bqy vq4jehkf9/i)-7vu/re 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 alongl wbwp6weluojj9/ km6v5s/9 bb 6i3*p a line is shown. The objectb9k pjj5v*pobw6 l /sile 6ubw96m/w3 starts from rest at time t=0 s. At what time(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 sc1ag/ 69xdcc line vs. time is graphed. Which one of the following choices best gives the prcxcs9/cgda6 1oper 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 with -/8mlwwg :/cd befy(cconstant acceleration. Agwd/le/fwcb-8:c y(m t an 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 a p9 zxdg ti/u87i4n d,thr3jx3uosition $x$, 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 spmte2 ld7y iq, .km.qh5*nko,hown in the graph, which one of the following choices correlpm.y ohd mq,,2e75* q .tnkikctly 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 ch/vn ow 0 ceyuadwekl 2l-l4pg0o8us2u.7 8av,oices best describes the instants of time, at whicd7l ew n8.p8- o0l2alvvo / ay2uugw4 e0ucsk,h the car and truck travel 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, each start from rest at the origin a8oh56tjqnk(+utp9 7s7nhshf nd will move along the x-axis. The accelerat+n9uk fsjs7 (hh68t p5onhq7tion 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 movw9 iz+o.6p;hdaa2 r nsing on a horizontal line is shown. Atha6;po n2z irasdw9.+ 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 pa,x( o8w6rmaaosition vs. time graph provided.amxar o6a,w 8( During what time interval(s) does the mass have zero acceleration?


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