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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 circulqnsf,,rjql 4 6ar 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 referljezbb1n;6 s 0ence to a particular direction is cabjl06 ;sebnz1lled

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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 .3*gwnycj, wp/ywjy+ circular track at an average speed of 50 m/s and then comyg c/yy,j+ w.wpnj*3w pletes 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;c; xzpfw o (ymq9r4,o *jb6pr 1.0 s at the constant velocity. If it continues, howjqmyfpp r o,b9zwr;6(*x4co; 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 stationary on a qq: :o88fzp tl30-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 rat:8 po q8qz:tfle 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 uls9 9okt*fu,pl:2oo6 -,z 1 jexxtbz 400 km at 80 km/h and 400 km at 100 km/h. What is the average speed okz1uetx,6o bx9ls:o u2 z*lo-p,ft j 9f 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 mojcd;/y jcnrkex iao//7 8 p7;ktion of a toy car traveling along the x-axis. The graph shown below is a plot of t 7 o /xkcanrjypj/78 /kei;;cdhe car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to the motion of a toy car traveling along the xf*)kw3f ooe(h f2s+he-axis. The graph shown below is a plot +oefhskwh(3o*2)ef f 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 tr8hqcb: s c+ar;*cmti .aveling along the x-axis. The graph shown bels;.i:cbhm +r*cacq t8 ow is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. dp82 ,h 2w)u.2dgdvj;ffqdu ktime of a duck flying due south for the winted;df ).dv jd28kpgfu,2 qhu w2r. 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 which showt8it/4edt e: d4q7x yi1kgu3 as the position and elapsed time of a car starting from rest and uniformly actktdi1a/4734d q8gue exyt i:celerating 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 b,s.di7pl6dzd hv 6 m;p1s v0yqelow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a svh7im.v1pzp0dqs 6;dl ,y6dstraight 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 , u:q2bx*x, qb me a+r84ujvbsan object with the position time graph shown in the diagram atmbrx4 x2, 8,ujbaq e+buv:q*s 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 i)gftrca7 k,/ 2wwdv6u nformation. An ideal elastic rubber ball iw6)ru2a g/ 7ckdf t,wvs dropped from a height of 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 infpaxr/:xcvr ,.ormation. An ideal elastic rubber ball is dropped froc :/ax,r.x vprm a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with a sp6:a di+;; i1xkmv0ph) df vbdxeed 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: q 2jifdah s076 mk:wb8At $t_0$, 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 follown6u8ae5mtr s y*9e gb+ing 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 toaeyu mevc g7jn2.4.e* 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 foll/cpxnv+-6 kr b,bijg96 kx8o cowing 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 hox :i:n1fw+l ycrizontal table top and off the table edge. Which of the follyf+ ilc :x:n1wowing 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 dista z,vtgq+0 dwb8nce and time for an object that is moving along a straight line. What is the instantaneous speed of the object aq,8z wb0vd gt+t 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 reprcb.lbes.z3. p *upunc5ecy:4o x -h(zesents the relationship between distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero accelhl:bpe.se c5( c*pxuuyzo 4z.b.n-3ceration?


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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 initi4 c q,wsxgzt a2q5x)l) cla/2qal speed of 12.0 m/s from a position 10.0 l2asgwa/)5 txqx4 ,ql c2cqz )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 bey ye(3fe+:h u-+avok eymc14 hlow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the d+31k(amc+h4voy fu: - eeyyheiagram.
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 ca0gzzg uy0z9n;o7 eix 9r starting from rest and uniformly accelerating across the floor. The time and distance traveled frx9z9ey z7 0u;ggz 0nioom 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 carz+: mi. wij4e 2lb2uml starting from rest and uniformly accelerating across the floor. The time il w umj: bzi2+l.2m4eand distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ball. The posi(w6c8zz6:r3qajoai5w ep2 kn tion of the ball each second is indicatedk 38nez: 2c6iqww6 arajzop(5.
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 pos.mt 8147xelppgkip x+ition of the ball each sepi+xl .xtgpmp178k4e cond is 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 clown on a unicycle moving in a straightq+0dev/+v/f 3g)dymvq+z pu l line is shown in the graph below0fe+vygplz q +3/mv+ u/d)qvd.
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 51i*c;k /tzx8y *bc.yno+g hylsv6h qclown on a unicycle moving in a straight line is sxt*gzln5s1ch * 8yyky cb.q;i6 v+/ohhown 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 falls freely3te +(ljpco 4-j( wpwy 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 marble on i30(sc1 -6;;ln kglycfdpuv qa table top for 10 seconds. Fo ulc6c1 li-v skp;0n(qd;3f gyr which 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 57a/e obi t8cvvzho30 graph describes the motion of a marble on a table top for 10 seconds. Foz78o hvo eb5vca/ t3i0r 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 delml26lo e m*x2scribes the motion of a marble on a table top for *m elm226lolx 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly from rest for a time4jjn:2 f:*k gmm (1bhzw dy 5a*bqokewz4() px 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 straift15k j-gg,pf 5dl.llght 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 graphs could correctly representcpx07 by01 wde -g3cqw the motion of an object moving with a consb0w3ewcc0d 1x g qpy-7tant 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 describe: r2 jd *mzpw4y/dfyk8s the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car afz4 2m/jywd ypk 8dr:*t 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 twt i(0 b1qwye)he floor for 10 seconds. What was the total displacement o 0qbteyi(w1)wf the toy 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 bo)l xz,w68xq car across the floor for 10 seconds. At what times or time intervals must the net force on )x 8 6,zwoxbqlthe 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 km/hr in 4.50 s.be t)/ uxn8 hbafr9v7: Which one of the following choices best represents the acceleratio u9)er7tbhxf:/v8nba n 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 vers 5j8-nul)fd8hr4plcous time curve shown. Which of the following statements regarding its motion is NOT CORRECT?nlc4h lrupd 88)o5-fj


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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 move) pho,9q hyy4ms along the x-axis according to the velocity versus time curve shown to the right. )qy49hm ohp,y 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 ba9 9v0ixbvw)l4xtkt us48q 3 p.)v rbepll is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is9)prb0 .4vl q tx9 be8ux34 kp)ivtvws 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 39 )j7nyp5r1cih fuwn8bbx e2are 150 kilometers apart and traveling toward each other.h2jfu5n 7 3 brx)y18e bw9pnic
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 pvk z ;7:)yt 90h yq*jrpj+kslkositive and incryjp :k v7 r+ kths*j9yq)zkl0;easing

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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 averagedetrtyx41 +v9 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 of the following c ij6j6cgn/io)by- : zuhoices identifies qyb/:iug)-jc6no jzi 6uantities 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 mover/yucm1pj/g5 * exfvglwn),z45;bullxn* . 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-time,ni93li9d2t i6+3ot dj rdfvc; $y\;vs\;t$, 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-dimea1hwnjlw wv.- 1)af: q bn+pu+nsional track for total time T in tw pnfw ua.:lww)q+h1 b-1vja+n o 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 graph for the motion of a car on a straightydp.qg:jo0ye : 4j(bm)qr z,c track is shomo0zcejqp (yyr:b.:4 q d)j,gwn 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 motion of a car on dj xg7d z- mjv)1ualv;ki*,*z h91sgva straight track is shown in the diagram. The thick line represents the velocity. Assume th *u)djgdv vgzihzxja 1* 7 ;lm9s,-vk1at 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 b ydwip 5aa;f.r*;r(yiy the position vs. time graph shown. For what time(s) is thraiafp y;;*riy(. d5we 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 velocityv/em8 +n t4v ld+yclk; vs. time graph shown. For which time(s) is the acceleration of the v/v+8+4l t c;myknled 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 accele19hj 8mgu:x. zse fyr*ration vs. time graph for a fixed time interval of an object’s motion, whaeu m9xh rgy*z .8f1sj:t 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 5b :ux);fma xj. lx8inincreasing 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 p 9n0)3 pndgt.4c97 sevs4fac x8cyj m:ipul;r arts:
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/)t emwdaguun2n)4 ky:.mt c-/ kyf9y rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reaches the groun4r 7hwet+2f. l vt*k6wzhkp2ld 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 of5-lm 9.d 7umizzf )zxa a particle moving along a horizontal axis is shown. What is the total uz.7zm) -d95zafl xi mdistance 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 identifies h6:8z.l yt2f3i/zsywk l(fjy all of the listed situations for which there is a non-zeryf3(: il yf 6/hkz8.sjwlzyt2o 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 along ay(:xaz8*onlrm n,i tgh6 j34 j line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacemehj8ng 64o3lt(a,z:i*n rmjxynt 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 it: 2x qwxb/a2hrgc te3.s velocity along a line vs. time is graphed. Which one of the following:xa3 wh2 t.gx/r2 bqce choices best gives the proper 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 0n7* ubqno1 jrright on a horizontal track, each with constant acceleration. At an instant of time, 1*nnro0qj bu7 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 has4xf1si;ik1k q a 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 xr1+;8pz u hnmshown in the graph, which one of the following choices correctly de1rz;mn 8p xhu+scribes 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 the instants of time, *pffzk5 +831oagk6ktqj1uj fat w35 1pf+*gkaqfkj 6 f8o tj1kuzhich 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 from0t+k *tgzbe5t/ zl u.r rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the followinler5kg*. tt/ +uz bzt0g 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 objet4otk,fa a3)xspz xq6p.43k jct moving on a horizontal line is shotf,34tspak)x xpa3.oq 6k jz 4wn. At 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 xz j hyb65(vnyna7l; :e-axis following the position vs. time graph provided. During what time interval(s) does the massen:7b5v 6az;( hjy nyl have zero acceleration?


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