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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: 游客未登录  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 at7 5sx97d*8rinr 5o ougqk5zaw a constant speed around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit time without referen 8ht3gi6(nzmhce to a particular direczhg 8ti(3m n6htion is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular traci dxnkg3;p7((p e elvt(sm1:wk at an average speed of 50 m/s and then completes a second lap at an average spt(n wgp xi3(eev1m7s;d:kl (peed 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 tjp5eqtj9uwv0a9 9)k8p r7wg in 1.0 s at the constant velocity. If it continues, how far will it treg8q9pk t5)j9wtw r p 7uvj9a0avel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank that is )23 us3nbe halno3 (+zopxw6p:ec,znsliding at 5.00 m/s to the right across a frictionless pond. Th2u:eznownncb+6a h3,lez3op )s3 p(xe 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 km at, r :yfn)(e (zu:pzsjy 100 km/h. What is the average speed of the motorist on ths)(:(p fz,erjzyy nu :is 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 alq :sj;v ;crz jlj0v/f:ong the x-axis. The graph shown below is a plot of the car’s velocity in the x directi/;:fjrzj jc v l;v:0qson, $v_x$ 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 th :b*t2csy fd r.thx-0rmj(ad-e motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in thtfjxr2tr : *hda dm0-sc-b(. ye 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 traveling alhxgxc 3:mwm.0:fu . )jwacy(iong the x-axis. The graph shown below is a plot of the car’s velocit(u0y m :xwh :)im.jawxfg.c3cy 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 flyingz)5 r 34hvejijh swd4; due south for the winter. At what point did the duck sto45jh) 4ijd rhv3;wesz p 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 beldai it5b: x4,uow which shows the position and elapsed time of a car starting from rest at: ida x5bi4,und 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 ioh-p*-h i3fe to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straigh* -3-opi ehfiht 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 vellusf5c m+ (:-cxsck a;ocity time graph for an object with the position time graph shown in the(s-a: s xc5kful; +mcc 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 quese b6+hs,rp rw8tion refer to the following information. An ideal elastic r,6pe b+s8rwrh ubber ball is 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 information. An ideal e zegp,:bfh: ktgp/7: plastitpz pp,g b:khg: e/f7:c rubber ball is dropped from 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 speed ofvne33vh* j o.m $v$ 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: s +-y-cavlvp7/1s0 .jt anjtuAt $t_0$, 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 spyr)q;/bk; dkh( v uv4cenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following s c loh;0zc-0aqp(i(au cenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
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 ya(9 e8 sp8,w(edbttqcuu32m refers to the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a horizont5mw z 3 c(snck1+i+ylual table top and off the table edge. W k csu+zc3+(wni ml1y5hich 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 relj jn t l/+lft:zq3xdz5n4bt23ationship between distance and time for an object that is m3 +j:xjl5tndqlnttf/ 32zz4b oving along a straight line. What 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 t .mf,gbhwm66h he relationship between distance and time for an object that is moving gf6hm6h,.bw malong a straight line. Between what 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 inizpm,+pj( + unw j./gejzinm(+tial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air rew m. (j+ +in(jem g/z+,njuppzsistance, 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 below represents a toyh5j16es : 7wam8ctuc ,;w+ewbsolcl) car starting from rest and uniformly accelerating across the floor. The time and distanccl8jaece1:)b5;tlcmos6 w, 7+ whu sw e 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 repy:dp;o y 8g,jk tas4y:resents a toy car starting from rest and uniformly accelerating acros;4 :kg yyp,dyot 8a:jss the floor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from rest ai gho13zy 8 8-dps6 x1abpyy2rnd uniformly accei h1 xyz-2p 1b8oyr8 6g3ypsadlerating across the floor. The time and 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. o,irmb )u, we-tj/cn0The position of the ball each second in,-ubire/o ,0m jw )tcs indicated.
What is the average speed of the ball between 3 and 4 seconds?


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly accelerating ball. The position of thep; am3 zb3cjjvzdj:61 ball 3v bdj;cjz :am6 1z3pjeach second 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 r7ia )t7qvt+g circus clown on a unicycle moving in a straight line is shown in thetg 7v7iqr)t+a graph 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 ci-fqazax e7* p(rcus clown on a unicycle moving in a straight line is sa zf*e-xa p(q7hown 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 freely in a vacuum near the +z5/r 33f kiuc 1bq9i r1kulwssurface 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 motio5b n-uht+ xwmbrcpd6/1mu n40n of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negative velon 56wtur m/bhn0+ dbcm14xp- ucity?


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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 7,s+ :i0g rekz3yomq 8o+fwgothe motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive accelerationq:s0++ fir ,ko87eo mz3yowgg?


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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 motion of a 8n -j(lb*/1 d hlzeqasmarble on a table top for 10 seconds. What is the marbles aver1zl* -be/ad hqn(jl s8age 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 fyd4-:dmj sf f;4b*a nj6 oflj3rom 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 straighzle9k x+6 7jnqt 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 ccy64(r:jyrjly s3mgn;o vo 5 (ould correctly represent the motion of an object moving with a constant speed in a s(jyoy4 r c(rmj;:g 6 s35onylvtraight 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 abm4f6saz g9b, cross the floor for 10 seconds. What is the acceleration of the 4s9 babfm,6gz 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 desc. yq3.9x temlkribes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the eem xtkqly39. .ntire 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 f9p tfcwekn ,9;u)/ yjr7jtnq )loor for 10 seconds. At what times or time inter ypk) /r97t;jf9 cwujnet) ,nqvals 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 j 0a .9byctvccdqm9 3kgg7; e7o3;qyx60 km/hr in 4.50 s. Which one of the following choices best represents theadcocxg03 .;7v;ck73yygqt9 b j9em q 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 velociaqo..iseffyw 0xkvck6.5zl,i k;h;+ ty versus time curve shown. Which of the following statements regarding it;i+ s.. kofqe.w6zfi ahy 50lv;ckxk,s 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-axi1 u6fe9jmz+w tg)qtbfe/) 4kzc-ir e7s according to the velocity versus time curve shown to the right. When deec z4r)+ q mtwk6i e9-g17) zujbft/foes 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 ballf:0p y9qsz,mh is moved so that the angle between the velocity and the acceleration of 0z,m pyq9shf: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 acsg ixehgg7lov(* r((-2hu (c , l2zicpart and traveling toward each other.u2(x( olh*v, eis-c g7gi((2hrclz gc
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 t byga(iju5zj 3l)rn/ tm1- ma0y)3whqhe acceleration is positive and increasr3)imjgyhj-aqu tzalyw 3n 5)1( / m0bing

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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 velocft c2p(0vk2(bkmhch/ej+ v 9 jity 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 dix surb)iv 2-9md1tq3 )obi2dfmensions, which one of the following choices identifies quantities that mui)u- ddt13qi2v f s9ox2b)rb mst 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 moves hbr* g 8u2rjj m+9ahi0$3.0\;m$ 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- (fx:rl4mnr1 ampjm96 time, $y\;vs\;t$, 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-dimensional track for total z)w.x. me04nzttf0qa)b2hui time T in two pari.twz habtn e z0x)m.0) f2q4uts.
• 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 m ap.qd6g5my w.otion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car sw.qg may5p.d 6tarts 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 grap v;y )j ze(,d9yldrpq.h for the motion of a car on a straight track is s)dvjry9 ; (,eq. zlpdyhown 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 4v54ngh q+ g4gj3ea /acp g;a ejci-(ban object given by the position vs. time graph shown. For what time(s) is the speed of+g4( gab eiq eagp53gccj ;j-n/av44h 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 s:f n .-4gd.- lyigxyd4p0, opdxurgr+hown. For which time(s) is, 4d4dy+ g:npgx.p x-o rdr yi0ulf.-g 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 vsep/c s q.kl60 m0qsgg+. time graph for a fixed time intk.gs6m0 ec qlq0 +sp/gerval of an object’s 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 alor ia2bc3ohi/ ;ng a horizontal 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 trip in two gv))mt zbdvq71mcy1jot6o-hy), * ct r53c slparts:
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 releaso8 nou 264l3zrw j xlwzg4c3;sed from 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 frx7 b vp-i)/+33 *l ztbg 8rz.zv dkjnxleh(7ukom rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle moving along a horizons77.nvgig v 97sxoc9k tal axis is shown. What is t.c 7s g7oxg9 nvv7sik9he 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 following choices correctly identifiesq6x/k gnrikup1d :1i1 all of the listed situations for which there is a n16ii u1k: nkgxqrd /p1on-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 along 0sn5,go 3rw./rh i ncga line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displc0 r5,hg/g.ir3o snwnacement 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 ori*prxo g6i-; a1cn/bpdgin and its velocity along a line vs. time is graphed. Which one of the following choices be ;cxngob 1ppa6 d-ir*/st 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 right on a horizontal track, each with constd3cr. 9oube5n pu t9,9 3nmzeyant acceleration. At an instant of time, the ind9noe35pz e3unycu9m9b , .rtformation 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 positionzlsji 7.c8v7tam: etn 8;e;vt $x$, 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 ti-eb8 .hy1138v p brrvdur+g-litft7k me shown in the graph, which one of the following choices correctly describes the relationship between the avetf g8ubdtl31- biheprvrr7vyk.+1 8- rage 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 dpd)s6mk75v1c7 kqujt9 rp zd,escribes the instants of time, at whtqd m5c9)rud7pjk z7 s,6 1pkvich 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 i-q ,3mk+n(sn(e eacjd3. j 8sdu wu5dand will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choic38-usdeu(im53 s e.(+ qjnakjw,n dcd es 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 horizonta)k:lmq r(u jvyuk;91yl line is shown. At what timevjqu(:yy9 k;ukl m 1)r(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 oxk7pozoaady2k0 / k .2a; f.i-njcp(,y vtu1 the position vs. time graph provided. During what time interval(s) does the mass have zero acce7n cvk dou20ppi joa2f yy/ka.,ka;1t- oxz.(leration?


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