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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 arounmo n(tcj4:dx .fjylx y16b 7m.d 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 reference to a particsl9lxaj m5 s llq;l4*;ular direa lll 4lsqx ;;s5*jlm9ction 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 a;f p.:9l cclybround a circular track at an average speed of 50 m/s and then completes a second lap at an.b ycpc9 ;fl:l 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 constant velocity. If iqs1o/6n:nsqb t continues, how far will it travel in sn 1bnosqq/: 63.0 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 o/,qtqxz-s fj/ n a 30-kg plank that is sliding at 5.00 m/s to the ri tz,fq//sx qj-ght 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 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 stnltx . b:d2.km at 100 km/h. What is the averat t .l:nsdbx.2ge speed of the motorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling 2f3*uo 60zxdfkcy4bmbsj-2 i w+r mb2along the x-axis. The graph shown below is a plot of the car’s velocfmc rb buyf bmw+oji-x2z 2ds2*0436kity 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 motio l6;)1y3 p gaj9 u/)3ko eioiervwq(agn of a toy car traveling along the x-axis. The graph shown below is a plot of 16wa;egpu( rj9q3)) 3iy klaoeoi v/gthe 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 w54aoi.fyc. (uc h) sq-v5b uithe motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s veloc5y-uoqa)5. ( fs4bu hiw cicv.ity 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 x,pp5pkx xakh2ocj-j. zt98 8kf7 ;ijdue south for the wipj,j ;78-pxtxp aik o2jxz5fkh8c9k.nter. At what 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 the diagram below wheadroqp -r7;pwh1kx;l6 / d q2ich shows the position and elapsed time of a car startingrl hp6ox q1r;27wa qd/;e-dpk 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 refer to the diagram below which shows the positionj ;li ,3j 0kiym9pq6lsg)amn5 and elapsed time of a car starj3,0lij l; y5mqiask)gnp6m 9ting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time graph for 7)vcxned ak.* ;jg.m +tqw5fsan object with the position time gr)gdn. ;sxavjk cme7*.+ qwt 5faph shown 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 r;0pa oswp:1 m9fyk d,gefer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits mfp p; :y 01sawk9go,dthe 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 v19 p)na-dgjlrjzx ;0 t+d5wathe following information. An ideal elastic rubber ball is dropped from a height o aa5-xj 1j ;wn9rvddzt )+g0plf 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 wk6h ;i dkc)o8kith a speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the following scenario:yfw4*n; 8ptoszeir yl36 /fr. 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 follo2-bvt w lr(rk5j0zwswz/ssurd o6 5,(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.
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 qq 1 rc2n i j6m0903ixwfjz4zrrefers to the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the follow y,wi3. hoc58io qa0jzing 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 hori9x(6ipfr au7n zontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's accelaxir9up 7 6nf(eration 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 reyo -ns76c+bxya ,yq;mz:fgi/ lationship between distance and time for an object that is moving along a straight line. What ;fasx6yqy oiz-m+, :yg 7nbc/is 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 be9vl3q sy o4 ::ea(psgetween distance and time for an object that is moving along a straight line. Between whaty3e:( pal s4osv :9qeg 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 throxdfk6 sm8r2y(eac4(k evld9 3 wn 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 when d9av6(284e mxdf(rclks y3keit 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 representxk ka3q:cppp4n ;71g ts a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram.xtk:nqppk3g4 1a7p c;
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 beaejc p48u : o wn)*ojsf i7z0(9t.irjplow represents a toy car starting from rest and uniformly accelerating across te4ic.o 0j8rj w fotp7n)zjps(iu9*:a he 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 represents a toy car starting from rest and unn2fw 9j4-ywn po* x+fdiformly accelerating across the floor. The time and distance trav wo *yf4n +-pf2djxn9weled 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 p5y/xl :).budm1krnfp osition of the ball each second is i fky p 5mn)dr/blu:x1.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 shows a uniformly accelerating ball. The position of theht-w ngp2 4 aff*u6df . au1ut8zh2*nw ball each second is indicatf 2 8t. h *hadf2wp1wu4-z ufa*6utngned.
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 unico59yhyt+;9ehr f3j(xyu/8qx g zlo4 q ycle moving in a straight line is shown in the graph below. fqx(4h9 +9oy he /jy8qxot z yglr53u;
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 moving in a 1cnt ,fmq2nfgw 6n h c5d.ct4; w96foistraight line is shown in the graph,2;nofwfctg94t c6 mdnc .1f6in5q h w 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 freely in a vacuum near the surfacca3v,k3l7h s-b yl-nze 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 motionke -:8rbnv) x9 rsfar:.8jtd g of a marble on a table top for 10 seconds. For which time interval(s) did th:ar9 t 8 drfrkgxvne .:sj8)b-e 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 marble on a tabx.s ( rg3vfv6ple top for 10 seconds. For which time inter 6srg.(v3vpf xval(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 th 7qa4jfp.ji8wu *s xz:e motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3* xiqz.ajf u :84pwjs7.3 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 acceleraw9pluua4zq ;3tes 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:s5t x en2z9kkjql*a9 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 graphs could corry lxt:u:vp4y8wj )e: 5vnfqk9ectly represent the motion of an object moving with a constant speed in ayv t:nul4 e9)pxfv : q5ywj:8k 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 acrohxjk8vvk1b9s+n 5 j z*ss the floor for 10 seconds. What is the acceleration of the toy car 9j5* 1k jb+n8kxz svhvat 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 desc qbosr*c,7p+h ribes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toohs*q7cr+b p,y car for the 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 the flo xk*onh -g(qyqx,i 4h9or for 10 seconds. At what times or time intervals must the nxq*-n9qg ,( yk xohi4het 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 6b4f8q z 1r(por0 km/hr in 4.50 s. Which one of the follo1 rrqobz(f 4p8wing choices best represents the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity ver e-g4qx+,lr/kug p*l tsus time curve shown. Which of the following statements regarding itrelqg/*l,ukx+- t4gps 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 +i3ulaoap8lnn n 9l-,the x-axis according to the velocity versus time curve shown l+n il-,9p8oaunnl 3ato 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 so that the ang x7yvyq3o2lexyu ,7f 3le between the velocity andxe,y7372l3f yxvu qoy 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 a13 2/uqk1gtm-yy j vpjre 150 kilometers apart and traveling toward each other. 1tqjj -mkpugy123/ vy
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 a bkhlhf*el js/gm4.,,nd incr e mh*,j4lb,/fgh k.lseasing

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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 iw92dak+ xiy2bp(lr j6s

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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 ymuzylb7:71s, which one of the following choices identifies : zby7yml su71quantities that must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car mov;7rt0 .aihpn ges $3.0\;m$ 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-timef+nt/+ek .qvp5ivy-h , $y\;vs\;t$, 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-bh.i pg62t lk /6alb0mdou b28dimensional track for total time T in two p2kba/b 2gmo6dl0pi b6u. tlh8arts.
• Part One: The car maintains constant non-zero speed V for the first $\frac{3}{4}$ of the total time.
• Part Two: The car accelerates uniformly to rest during the last $\frac{1}{4}$ of the total time.
What is the ratio of the distance traveled during Part One of the trip to the distance traveled during Part Two of the trip?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.23: The velocity vs. time graph for the motion of a upx by+dwp i1 v0*h)7c3asb-bcar on a straight track is shown in the diagram. The thick line represents the vv)c7+b3b0 uh *ipdp ab 1-wxsyelocity. 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 vs2ky4sqv u2w-p 2si2vz a(xu(p. time graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. (uaw yz (ivp4s2 xp2q svk2u2-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 thec1,xnjg x .1f5uk ryjvnv.b4 5 position vs. time graph shown. For what time(s) is the speed of the o5x11kuxn rn,y j.5vf.4vjgb c bject 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. timep qy74x btwe8/ graph shown. For which time(s) is the acceleratexw4b7p8y /tq ion 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. t aa pu7q1 ,5he48necetime graph for a fixed time interval of an object’s motion, what quantity has been da1u4e hqceap,t7 8 en5etermined 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 wd 3l/sbws..zldba m3* ith 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 tripf,w n/n8i2 x8iddrd; q 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 g: a08z aubmh/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 reaccjpxq2qer4rh 1z3 :/.2 xy uiihes 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 6xtp-3 vrjbe8graph of a particle moving along a horizontal axis is showv3pe b jtr86x-n. What 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 followinglbnpj.p2m9/ 0*s zo ng choices correctly identifies all of the listed situations for which thesnn9lm / *jpg2 .0bpzore 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. tizj ux+ga /bck r,s3;,yme graph for an object moving along a line is shown. The object starts from rest at tiz c+ gkxs,,; ab/u3jryme 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 vs. time is-d;six lbhb;4 graphed. Which one of the following choices best gives the proper interval(s) of;-4 ;xdhb lsib 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 h.3/o uzxry:oto the right on a horizontal track, each with constant acceleration. At an instant of time, the informao:o3 x. h/yruztion 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 pf nc f n3 6pu2)ujlr+jy*56iki hueoo---ymw;osition $x$, 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 follo4 1s w uth,8weznf,.abwing choices correctly desc n81z4,uswew,hta .f bribes 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 choices best describes thbae5hmv j,w v8pm)r1 5ud,lp ;31vweae instants of time, at which the car and truuvwa5epbm1j d1,8 ,lv5me3havpw)r ;ck 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 and will move a 8ub t(juf1vs1mkxu w:; tbe+:long the x-axis. The acceleration vs. timeb1u1em t u:;:stk jw+bv(x8uf graph for each car is shown. Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of an object moving on a dkmoe9+ *,fstm3tzaa6d5f4du .dy9g horizontal line is shown. At what time(s) is the objecto59 63 m g+a tedmksuf,ft4zyd*da9d. 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 th;4rim8(w1ovm5nfm)p6zfhbhmcu 86s e x-axis following the position vs. time graph provided. During what time imw 6mp i s4c88fb)u5f(o1zm rvh;6hn mnterval(s) does the mass have zero acceleration?


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