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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 patmo4ogu 4p .:0z xhr9qrh 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 57g v:rg ui.l:(ft zpkdistance per unit time without reference to a particular directi5t:.7k uglvz i grpf(:on 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 cirwcb+s;w-e jiw dsx;74 cular track at an average speed of 50 jxcww4b+7; ;w-se dsi 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 f(;7bhj r)a mrm in 1.0 s at the constant velocity. If it continues, how far will it travel in r( 7br;jm)h af3.0 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 m0t)kc z)5muxr /s to the right across a frictionless pond. The boy then turc) kz0)mxu tr5ns 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 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 80rux-n,-j n m pkw.md:. km/h and 400 km at 100 km/h. What is the average speed of the motorist on this tripj :nmp .mrd- .wxu,n-k?

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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 sv 7)n/(rjlkjtoy car traveling along the x-axis. The graph sh/ )kslnj(v7j rown 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 refgc6* + -8nxmtm jba+ukers to the motion of a toy car traveling along the x-axis. The g*u+jmnx kg+8m a- 6ctbraph shown below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a toy car l7dlr ;z5cjkjg10 -bfax9- gr traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direcx-db jrk 5;-flg0azr9l7 g1jction, $v_x$ 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 vedqu.7a -gu+aq:b,xb odm u;g 4locity vs. time of a duck flying due south for the winter. At what point did the duck stop its forwbm4: a.dou+ q uq;,7udag-xbgard 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 br-nze18ph ztgy5)0o position and elapsed time of a car starting from rest and uniformly accelerating ing805 p) -b zeohyz1rnt 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 dguparpjt4- ko/y- +k(iagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second intekyjpku+ o/-g-(part4 rval 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 tijks j/qa ,8 x;cd5i)onme graph for an object with the position time graph x8,o5jd) sn kqca/ j;ishown in the 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 ideal f*v)5gyo ffe737k oxca7xbj0elastic rubber ball is dropped from a height of about 2 meters,7x fb0 7c7eo x)j3* fg5fkyoav 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 information. An a h z8/1f;mm,ed3cpwxideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor anphe a18,w/mzx cf;d3m d 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+qvf.ak rv 4:/wkz a2z;1gxo h 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 thelp11lpxz* 6tp0x o7tf 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 to the following scenario: At spld/70)oe)u adg0 oi$t_0$, 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 xygeq j5rjty6; 55 prhh0d2nt k(: c3ifollowing 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: At ).5/vv.r: mfztr s2;bvhg kle$t_0$, 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 horo 0)hqs+9seh sdutybsq (17d 7izontal table top and off the table edge. 1se(dshuhdo7ts +s0y7 bqq )9 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 relationship between distancocl9b +3aj:ze 3kosk*e and time for an object that is moving along a straight line. What is the instantaneous a o*bs3zo+kjclek3:9 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 bisp96l0f1 mx 5vvvid (etween distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero acceleration?dvipxmslvfvi (5601 9


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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 thrw*h pd1:iwktvw 12i, zown straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ign1d: pz*whv12 kiwi,wtoring 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 b5ojj306tqeagt9jqy ) pb7c7 relow represents a toy car starting from rest and uniformly accelerating across the floor. The time and dis)aq 5 9ob7gtec jp yt0r36qjj7tance 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 represents a toy car starting from rest and uniformly a3.qcc n2 1jrrw*0dy k1f,lj kkccelerating across the floor. The time anjr 1r.yk knfk j2 cl0cq1w,*d3d 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 represents a toy+arnuz lhr7+2 uez0( k car starting from rest and uniformly accelerating across the floor. The time h ler uu0+2( zkn7ra+zand 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 acceler,/ji,2i 0g:wpm0kr j0u l idfpating ball. The position of the ball eachij0:0fi wp0iur ,,2d /kjplmg second 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 sho1psmd*st.c -:qb 4zzvws a uniformly accelerating ball. The position of the ball each second is i -qzv:s. tpz1sm d*b4cndicated.
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 (0 qa li8zoj2xkzvk+: a unicycle moving in a straight line is shown in the graph b0v8+alzo( 2 jqkk:zix elow.
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 unicycc( zqvye 4mw/ *6(zvuple moving in a straight line is smz/wyqe v(v (*u pzc46hown in the 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-v5gtzg .csunzn h.vz 2,dk3- 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 accompanying graph describes the motion of a ys3xl7 n*4heu marble on a table top for 10 seconds. For whic 74 nx3uhlsye*h time interval(s) did the marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes gqjivh:)vs 01mo-se+the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive acce1)+ vgv:-s0eqhmsi j oleration?


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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 id )) 7usrinsw :b9)eapqdu-2 describes 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 =)w)d a7 ib:s e2 q-i)urnusdp9 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 ti6emm0aly 0gbjja5 : f+me 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 ripay2earp9 5gp 17(ga 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 graph6am-cmes1h9 k/b;bb/ zdhjvq t vm5)1s could correctly represent the motion of an objez-hvmb9 ema;b5b c6)s/d 1 hmt1q/kj vct moving with a constant 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 t u+-w3xu5rl+ym 6cln dhe motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at t = 4 s?l5+- mn6d3c+xuruw ly


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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+3ca /*py , hgo-csso oi6;qqd car across the floor for 10 seconds. What was the total displacement of the toy car for theh i/, +csdog*s6aycqo o3pq; - 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 den,e:y z6 po0bwscribes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on the toob:n06pz, ey wy 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. /0dq6 qmf fja bif8*m0Which one of the following choices bes f*0q08im q mjfdbf/6at 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 veohh2qd : yhq7 x:xj e)ya-tqd9 qs71n+locity versus time curve shown. Which of the following statements regarding its motion is NOT CORREqq7a)jo29dh yhytq qhn+:e71 xs x-:dCT?


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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-/d-b5(5() x2w hi -d7ttoh qxflhpgs)trd7qaaxis according to the velocity versus time curve shown to the right. When does the car ha( 5 x d7 fohaqd2 xpbt)lrw)dghs5 /ti-7qt-(hve 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 o:x(ygp ,bgq d9f time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this dy(:9pg bxg,q 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 kb o: k. fdloo;vjew52)sg1;k48tg htiilometers apart and traveling toward each other.fs .o8o;5 d)ekbko tjiwvlh1t2g:;4 g
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 thes-fq28havgos61 x p h. acceleration is positive and increasin h8g6 qh1-vxfps .2saog

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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 averaghug**o6xc b i;e 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 two dimensions, which one o*r3j3gojw v ;b5 om+tef the following choices identifies quantities that mus;m +br w3v*ojo 53gejtt 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 moveilex+ yd(68y ns $3.0\;m$ 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-tifbn6ev llm( -0me, $y\;vs\;t$, 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-dimensiovjde ,2(z9a x7cie+pznal track for total time T in two p ex+zjep9 d2vacz i7(,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 fo/f2d :p)bmdmzdbn(5tc/* wmur the motion of a car on a straight track is sh cwddb/)bmpmtd /25 z:(nuf* mown in the diagram. 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 for the motio(ck 6 s+i s,(fwn5t3z9gqum von of a car on a straight track is shown+iw(tg,3 kzucq69nv (sm 5ofs 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 object given by the posem tig3 ; esp7r xerx3,a2i8n8bws81dition vs. time graph shown. F8xr;3ngi ,s12mwie b7ser38dt p ex a8or what time(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 velocity vs. time graph cb k*dn ,lhx :n:m-a de(njr*5shown. Fk *dd-n (njmnace5,:h:rb *l xor which time(s) is the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs. time graphq2gfh1nf*lab ij.l qws 177 e; for a fixed time interval of an object’sqb1lif*nj 7.f;e q7gh1aw2ls motion, what quantity has been determined for that object?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object moves along a horiz6y,fg5a gm ab)gvlh th. xp7)6ontal 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 tr)o gb-h7eu3a bip in 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 released from rest and reaches the ground in c d,2ik tni**va 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 reas h+g 3ow,+caqches 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 movi xu+mr7bfr8 ca2,ykc1ng along a horizontal axis is shown. What is the total distance travel2,1 y krf7uma8xccrb+ ed 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 foly6klm2nb8t0 ski oa3a*t, v4a )lx( ovlowing choices correctly identifies all of the listed situations for which there is a non-zero accaa 3lxns* ( l,i42 o6mto0vtbk)8 kyvaeleration?
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 objecta 4 .zbw,wdmn4y )f yeougc5/( moving along a line is shown. The object 4,gyyan ( /mcou)w w4.b5edfz 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 line vstk23cc cfl.4n lyylv5rc7q:*. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving awlyq7 .cc 25lrcv:t*4yknl 3fc ay 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 hhks zrpe*7hs2ubm5 ;3orizontal track, each with constant acceleration. At an instant of t2 szb57rkh*mh;p e us3ime, 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 positi;/m0+khk g9gb82s/ szahqxag6ew6 nz on $x$, 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 grap:st ke* ov:y65pjdp/1ruu5fi h, which one of the following choices correctly describes the relationship between the average speed of the truck tpy:rj5d61u/fp:5i*vou t k e so 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 be jrq.z;gh:0 hvst describes the instants of time, at which the car and truck travel with the same sp. ;hvr0jgqh:z eed?

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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 oriky 07 (gt73a +kvwygsngin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationshipyta7k(0 7y+gwvn 3ks g 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 n8miiec+ 2 wcr0fw5zv qtoyg mo6x/34w;a ;- pa horizontal line is shown. At what time(s) is the object i;px2 a nyc w m6;w8 4cwotom/gez0+fiv5-rq3 moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position vs. t:q9aai+ kqo )gime graph provided. During what time interval(s) does the mass qik a:g+ao9q)have zero acceleration?


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