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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 acw ld ;u x)h, r3lj;+tcpq)k3 +uqrzt6 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 j9/l msaa1 o+mv bco57distance per unit time without reference to a particular directio5mmj/a vsb+1c9 al o7on 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:fn x667i nxo-h /zrkg one lap around a circular track at an average speed of 50 m/s and then completes a second lap at an avera6hof 6x xn:k/zn-ir7 gge 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 velocityavzcb4 a q f+kchbc1c3up9qh6+* vd32 . If it continues, how far will it t 392 cf6v4apv+ bkqzcu1a3c +*chbdhq ravel 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 slidin1 pko bdf38 yv o, *tnogxp5-hy:pzmk94db3 r;g at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank relative to the p -x fyprpbp9vk* nd5y8m: hg o3d1 b3,zotko4;ond 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 100 km/h. Whatw .(ss ,ivdgu8de51qsq: +mfs is the average speed of the motorist on iv ,+ mw qs1f.s58dg:qdus (esthis 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 off(;ua 0jl3dk u a toy car traveling along the x-axis. ;kljda(uu 03 fThe graph shown 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 refers to the motion of a toy car traveling along the x-axi4q6 l9vyusmd7rf+bs 2s. The graph shown below is a plot of the car’s velocity in the brmvl+u 6s9yq2 47fsd 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 alonsuqr0m (g iso200:ksn g the x-axis. The graph shown below is a plot of the car’s veligr (n0o0sku2:s0qs mocity 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. 6+.caynk7 9qpkz ,yjq time of a duck flying due south for the winter. At what point did the duck stop its forward motion? azpn96yq7q+kjy. ,kc





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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 thepm-qfru kkv,54 g57mw position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average verm7ufpk q,k- 5mw5 4vglocity 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 bb a0u/c,si ; *hp xqbsz3ggn+(elow which shows the position and elapsed time of a car st(i3+ ,sq u xshz0/cgapnb*;gbarting 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 an object with the posio ,y/:tphj. kdz fk;o9tion time graph shown in the d;kkto:. d9hpf /jyz,o iagram 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 reff7hh3u-hqag p( j ,7n, .onc2whrqbd .er to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds qw nq 72h,oafhg.3hpr ud,nb. -jh7(c 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 id6t ncb0f itg*0eal elastic rubber ball is dropped from a height of about0*n6c i bgft0t 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 travl-kwa9;8cerc el with 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 fvenpr6/, abh+g *i p 1aanl6/zollowing 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 fow)unzd n9(3z,2m1 cophn8b zellowing 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 to the following scenasv;em21 exon.*8jva dnmr 5h/ rio: 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 followi z(qr7 *2.5 iipv qrvv5lzs2.c,gqhr jng 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 rollh(7r3 te3vkubs down a ramp, across a horizontal table top and off the table edge. Which of the following would best repr73b (ek urh3vtesent 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 u9jnb2f. xvm( between distance and time for an object that is moving along a sbx n.(2j f9mvutraight 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 the relationkx ;f,o8:fbpj l/l+ykship between distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero acceleratix;+lfl/yk bo fp, jk:8on?


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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 suwi;5h20e4+fwgii wsv8uw: v traight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, th40 fsigvev;w iwwu2hw+:8ui5e 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 belo: jwa3dfjm6wl,6 oho 7w represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in t,md 66flw3ojj7 w:ahohe 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 unif-., kx,suq (jvrw 1 wmze,:dacormly accelerating across the floor. The time and distance, d:jeaqxwk v(mc,rw1s, -zu. 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 representz ,fv(i6of2egk 3 u(wts a toy car starting from rest and uniformly accelerating across the floor. The time and distance travelk ((tg ff26zi3vu,wo eed 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. Tf6a ww yz;0mo9he position of the ball each second is indicfa0; ozmw69wy ated.
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 balnq, i0j mw ;7qq5ay7yfl. The position of the ball each second is indicatenyq77 ymiqf ;wq5j0,a d.
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 kw4as5+al:lxn;z9 2 p6 yicfp unicycle moving in a straight line is shown in the gra492wk;aylax p fcipnl5sz 6+:ph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle moving in-h8j e:pb/ ji8k.gsef a straight line is shown in the khbf8 :/.ipejgj e8-sgraph 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 surfacexa.4:t2ow 3mks(goau 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 mav p.dctpqa)8tk-9)8z, ex idyrble on a table top for 10 seconds. For whichexapy)d8q9ittp k8 -d.czv , ) 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 the motion of a marble o uib3u393t s1x sty3z ftx6h9in a table top for 10 seconds. For which time interval(x 6 9u3 ttb9fyi1xstzh3s u3i3s) 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 the motion of a marble on a tabh :p1za t3+lliazf0hbb+ )rca2 ) kol9le top for 10 seconds. What is the mar0:9k ++tlparhl)la2b) zzi 3ofchb 1ables 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 f1 j)j9) ulnr-q 1uqusmor a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with a speed of 6 o7j0 f;sb:by3r acys j/ui+q$20.0\;m/s$, 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 repo0ywr rl*i fkf o)*1s(resent the motion of an object moving with a constantlrf i *r(yo)w sf1*o0k 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 n*mrfs1 pf2m,xb:ubv x,8w5as the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at t =,:8u2fbx xm m, 5bw s1ap*nvfr 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 motio vl+l/o h;no:cn of a toy car across the floor for 10 seconds.nv:+lolh ;/oc What was the total displacement of 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 car acroshr-n 0cn2 na:u sj0x+js the floor for 10 seconds. At what time:jr0 2 nnn0c -+ajhuxss or time intervals must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.vnx8 uqn24pay**1zzf 6m eir)-u j lk650 s. Which one nk*fv28ua1y iz qz-6nj*p6e xl)m 4ru of the following 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 versus time curve shown. Which of th-jg98mm(o 2nvyg v; jde following statements regarding its motg djv8;ov 92mgym (-jnion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the velocity cue- 2lu+b-xyg 5)tlbversus time curve shown to the right. When does the car have zerubl5ct-gb+yl x- 2)euo 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 y:dpdl0ll6 6yso that the angle between the velocity and the acce6yl d6lpldy0 :leration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this interval of time?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are)(dtjeck d ti )y57d:k 150 kilometers apart and traveling toward each other.ed5i:dd t)c7j )(ty kk
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 nvw ,tipxiu5fwdy ur7q94z73 5 kjj:2and increasingv9izdnyu t32krp7u7w, 5 i:wj5 qjfx4

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitiocquy 6 n/g qp/nf*:tb5n of average 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 thqrb/o4 eq;er /cz0j( nsh 8qe9e following choices identifies quant8 /(en;zqrj 0 ebsrqq9oc4 e/hities 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 moveju 58 knvry)q,s $3.0\;m$ 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-timej31,n;1t4x+rkbd syghyxfhvz(1 s a1 , $y\;vs\;t$, 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 to(kzr2r2*.km hiqto7l tal time T in two parts. oh(k.qk *irr2 tl7zm2
• 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 straight kkp zqoe 8luns; 7g xl:cxa f/38hb;.9track is sf3h /xpa;zekn 9bsx.ukqg;l8l7o c8: hown 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 caamt ) w+xm5mm d1 7gefwis oc20-;nzw(. xyx3vr on a straight track is shown in the diagram. The thick line represents1 efvd3in y;axw gs. 0(tc m7mmwo2x-x+z5w m) 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 anbq s:qb8-(g0r n7dji-,nhyna object given by the position vs. time graph shown. For what time( hj- nng7n-y i(bq0s,rqd ba:8s) 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 objectfrmt9 fyzu *l;(v d-g0 given by the velocity vs. time graph shown. For which time(s) isd(r yzufm-g0 v*;t9lf 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 o +3;kk u)8oxbnt8o2vyb nxbje2y-o tp6 ;he8 vs. time graph for a fixed time interval of an object’s motion, what quantity has bkxh ob68o oyy-8 3k te2xpb2n+ob;t nje8v;u)een 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 horizont72ejkqj:x b *aal 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 g(1nvwbu k,l7b+dn jwni*6xy::s:gt trip 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 gry f-kx-cns5xh b4/j-round 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 id:dqfpzev en-2 rxlrm(3z./ jn)8rr 9 s released from 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 movin725xywz ff s/5a0oxdqk;sp 5bg along a horizontal axis is shown. What is the total d25xazysso70 bkqfpd ;w5x/ 5fistance 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 all of th rc lx,7jm9 rvgu hj 1b0sc43x:b.qlo/e listed situations for which thexc9uso,1jlcg4 lb.rm 3hvbj :x/qr 07re 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 acceleratiov87 .els7rd3r rq6l dfn vs. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its starting positio6d 7lr3 lqrv78dfser .n?


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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 veloci5g + gghi2w ac)drni.)ty along a line vs. time is graphed. Which one of the following choices best gives the proper interval(cd+2irg). na)gwhg5i 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 *g/p l*f4vqllr0 vw,p on a horizontal track, each with constant accelerap lp4r,/ *0q flwgv*lvtion. At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has j/f+ p)(oka:z zpwt 3ba 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 shown in the graph, which one of the fl0*hj-)zbdnd/d:m b tollowing choices cor/dnb0*jtz bm:h dl-d )rectly describes the relationship between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describes the instants o.rrplq a6-8 llf time, at which the car and truck travr8ar .l-6 lpqlel 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, :vo:f.w g,ah vf5 ,mdyeach start from 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 following choices correctlw v o.v5:d,fa hmy:fg,y 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 o8hy7i7l azyo+ n a horizontal line is shown. At what time(s) z7yy8iaho7 l +is the object moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the pospzh9de.5 b6sgition vs. time graph provided. During what time interval(s) does the mass have zero acceler eh.bpz6ds5g9ation?


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