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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 arounn hi:xxceq645g . f(fnd 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 diyr9dd y1 ans56stance per unit time without reference to a particular direction idya5n6d r9s1ys 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 circula- (+3qfe o*z1( at glggaww)ugr track at an average speed of 50 m/s and then completes a second )wgzgq- e *3a+( (1loagugtw flap 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 1.0 s at the constant ve ov4xz.3 h mp;pl12qwklocity. If it continues, how far o wvqppl2.x ;h34 k1zmwill 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 30-kg plank that is sliding atst9 n. .ow9pqm 5.00 m/s to the right across a frictionless pond. The boy then turns and starts. mpw.sqtn o99 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 atw4 v7pbwoh pds4m z(a.5)lmw7 100 km/h. What is the avep m d(4ospw7a mbzl)ww47.vh 5rage 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 )ylzoj 5ah3 (w./)a/vvle fbvtraveling along the x-axis. The graph shown below if/).beoz lh jla(va/vyw53v) s 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 travll88i3oleee/zv47 p heling along the x-axis. The graph shown below isozle4 7/3el8 leihp v8 a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to tywnh 9su3u6w213 * l:lptaugahe motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in theu a33y :hapl2ugw9 wln u6*t1s 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 grapho 2oafl 6cow2g f29xh7 of the velocity vs. time of a duck flying due south for the winter. At wha2ha f27o6ol9fw co g2xt 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 shows the poe: ;(jkio ,ylnf2v*x.c(htfbp brw-0sition and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocitw2.f:xfo hyb-ce j(t;p k,0ilnr *vb( y 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 dia3 or az19r.zy.-n: kuwyvrjv3gram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration duri n1javr y.ryu:vk33z.9wzo -rng 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 i( u bfz/2-bjusku+sk1--ek jthe position time graph shown in the /sk u+(f z2-kbjkesu- 1ib-uj diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the followinfgr7j69.c:iaf a 6 mwkfio0d7g information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originj 9w 6f 7a6g.oirfki: mfca70dal 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 2 og*sg9abhik9+.uyh elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to itkh9 o +sh g92*u.ibagys 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 spe:ky mb-gn:xg ,z;8xk ied 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: Ats)zug 5wgo:8cgsi 6. s $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers to the following scenario: At ep1apqf8to) y8txhy2ji b7,;md mmp 4ak7 1-h$t_0$, 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 tw,* oin6+una;)sb(snf8kd qphe 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 refer2co 7x7 cr)fxms 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 yp.h2vjt u7x( horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's jy.u t2vh(7px 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 thebm *u2rz )fpvods:,*n relationship between distance and time for an object that is moving along a straight line. What2*su:of )r*,pmdbv nz 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/j/uip:f 5 ie iaqvi)6t80 ymk the relationship between distance and time for an object that is moving along a straight line. Between what times di/i05v /am)p:k jifi8 u6iye qtd 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 b z;xfd7bt.i-c6+t y einitial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the xy7b eft; btizc+6d -.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 t5ib9 0f)f2g17gi(tjv(i2sc g y rljeyoy car starting from rest and uniformly accelerating ayg gr7b1f9 ( fielc02y52i)v stgi(jjcross the floor. The time and distance 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 9w;sf6kgp(j v represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from wkj9pf6( v;g sthe 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 recile*e ;hy)3af1:zj x st and uniformly accelerating acrosha;)xjzi:*le3f1 ye cs 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. The position of th l h).it - yz+q/nc86fywild*xe ball each seconq8x+zily c )hd*.yi wf/n6lt -d is indicated.
What is the average speed of the ball between 3 and 4 seconds?


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram showsa/7fz.4nsr(utqt j6x d5/x xe a uniformly accelerating ball. The position of the ball each second is indicts4ne6(xjrtadz/x.x 57/fu q ated.
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 straight line imr (5zawufhp8 e4a35 vs shown in the graph ba8 av3z rw5fhup( me54elow.
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;+jax nm 1ihma.t/*gm*sn5ci unicycle moving in a straight line is shown in the ga gm mcia1s./ ;*nx5mt h*+njiraph 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 surface of the eart,d rrgmf;bx b,08iu (wh

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanyiv;f1ijk sa5 * nxti yj,s,bqdm(52 v8ang graph describes the motion of a marble on a table top for 10 seconds. For which ta, 8j;5jv2tsiif( 5a,k*sv 1mnbdqyxime 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 on a table topgk 4h24 jvyb-vkn *1xv for 10 seconds. For which time interval(s) did the marble have a pk2g*kx vv-y 4jb14hvn ositive 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 b1 rqw m3q:lk*on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s aw1b* 3ql:kr qmnd 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 uniformlwt(c ct6nx/g3fe . hatr 0(ys0y 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 str 6t xnlou /h53)zps*f s:mqsl4aight 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 f t;/m gsjs(cj:c 6trhw:5ox( ii4u,wym4n)jgollowing graphs could correctly represent the motion of an object moving with a constant spe()rmm/ nwu(5stc:jcji 6i ho, y;w4tx :s4jgged 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 .8uclxh9 svz/t/xu4n:jt v) qdescribes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car /n x/vl:s 4) 8zthjtq x.uc9vuat 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 descno/ mfzuz 85p0ribes the motion of a toy car across the floor for 10 seconds. What was the total displacement of th5zoun0f /m 8zpe 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 acro+8j9afua,1r3n ask88gwa j tvss the floor for 10 seconds. At what times or time intervals must the net force on the toy cn9 gak31+ a jft88a r,8savuwjar 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 acceler -gb +obqu;i-pates uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents-+u-; qigbb op 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. Wld,aez9x-sj( ) ub +wbhich of the following statements regwu e-jxd9,l)a (s zbb+arding its 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-axis accorp(22 x ;wvpcssding to the velocity versus time curve shown to the right. When does the car have zerpw;pv(2s2 xsc o 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 hq8u(qsoekrgl5 )o+1r 2 ve(z angle between the velocity and the acceleration of the ball is kept at a constant 120 degrr2kovu(ze1) e(qqg5+lrs o8h ee. 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 apart and traveling toward xzjbc(e*i+58jihdug f8m t93 each other.bm8 5+juig di9tje3z(cxhf8*
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 an ,rdc,f foa8w)4w,ntwd increas,w n,dacw8w or ftf4),ing

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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 velk-ia ki(k ;40)s5ds.h ccpnoyocity 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 choices o lfx)98bd; slidentifies quantitl8; 9b)s dfxolies 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 movesc gq68 8t3u0iy obboi 109dmur $3.0\;m$ 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-tieyq4211p am7fkyed.0dd eq7d me, $y\;vs\;t$, 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-dimensis7 4fi+6 e1puwha0w r03k te gbhof:5monal track for total time T in twukhm rt:37+ swaf51i o4pee6f g b00who 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 t4vyu u 9fnm9/npp*h3xhe motion of a car on a straight track is shown in the diagram. Thxn 9fu 3vnyh/pm p*49ue 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. 15qbo4q(tei 07msg yi time graph for the motion of a car on a straight track is shown in the diagramt5qey4( ogiq7i10 mbs. The thick line represents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the position vs. time graph 5uue/+ibue, izriqj) - 7;cjr shown. For what time(s) is the speedujq+icbriu;5 r-/j7uee )i , z 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 o(ma- uu 1tdjl0f an object given by the velocity vs. time graph shown. For which time(s) is th0-a ujut1(ldm e acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs. time graph for a hnw7.0; 1bsliuvi ps,fixed time interval of an object’si;7vh,lb1u s0 n pi.ws 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 - c2*t hym7yymalong 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 ,c1n n(8vzx,lld )agq xyg0k -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 reacx6c g ) lu8wjbf)s-2gobgo1;vhes 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 ground ins l;+yuldox0h 2t7w k1 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 horizontal axis sad 2l48:fgixnxrepavih.6ef 5.5s(z+fx )j is shown. What is the total distance traveled by the pa(f6evl5p2g x)rsiaf 4z5 .a:e.fs j8xd nh+xirticle 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 -x og8( 7faabo;gntb8 following choices correctly identifies all of the listed situations for which there is a non-zoo(ng-g; aa 88t7bxbf ero 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 movin- ;r*ykegrc*hjhs + 32g7uk::glak vpg along a line is shown. Th**lju3pe7+yshrg;g k2:kr - :gvh cake object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity ala8q t f*.lo.rgl/v yy1ong a line vs. time is graphed. Whvrgyalo8 q yt/..fl 1*ich one of the following 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 movings yf7z(/amr9(r -dcg/ zqlao* to the right on a horizontal track, each with constant acceleration. At an instant of time, th/rrm97 zzy cqg (-/fl (o*dasae information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a pex5qg2 de3h ep)j8: ctosition $x$, 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, whic bkj4);,mst rzh one of the following choices correctly describes the relationship between the average speed of the truck to that of the casz;rj4)b kt,m r?


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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, ap sr9kf)f;+dnd;+sw ht which the d+w;fsrn );+pf9s hdkcar 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 res+d*1-o 9ttxst33 bl nrps9zuxkj 83w qt at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the 9z o*9btksr+3n8 sw3ql-x pjdt1x3utfollowing 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 ,lakpjo(t xh2w0 kr+:vs. time graph of an object moving on a horizontal line is shown. At what time(s) is thkpjt0+l(r xh k ,w:a2oe 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 position vs. ta)ft8 vsm8(ig-;r veeime graph provided. During what time interval( -efe;s m (a)8vrgtvi8s) does the mass have zero acceleration?


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