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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 sp;rxa2*dd t yy,eed 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 lw/. q44 gvejao4tef 2unit time without reference to a particular direction is calv4f/aqew2 .le44o tgjled

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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 track at an average speed oa; n6q-bf5to zf 50 m/s and then completes a second lap ; -f65qbznotaat 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 pl s7jp;;p l0b)w7mif 0.80 m in 1.0 s at the constant velocity. If it continues, i70wfl7 sl;bpj ;pp)m how 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 statf 1v+ z-adasaw-fp.* vym;l; cionary on a 30-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 rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank relativel+mav -c.vysaz- 1 dwfpa*;;f 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 4002 )(m )afoto5jm-o ceh km at 100 km/h. What is the average speed of the motorist on this te ooa) o- ()2mhtcfj5mrip?

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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 k :8iredkr-l8d zf9y:car traveling along the x-axis. The graph shown below is a plot of the car i8 :dk:le-8kz9drf yr’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 6rab9uu kh+(ou+ 2s;wxtrt o *traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x ts6+wux9 t *2h+kboo uu;r( radirection, $v_x$ 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 refersr 4tqommyh27vj7to w5q/nf62 to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the caromj 2 mtq 757h46vnw2ryqotf/’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 vscr)c3-nht qzl/6 hza oy2:en4. time of a duck flying due south for the winter. At what point did the du3/chq 6zl:2ra- y nehctoz) n4ck 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 whichz.tb8 +z rqwpu) *ih+ejo3qq9 shows the position and elapsed time of a car starting from req )iwo j*8rz+3.+q ue h9qpbtzst and uniformly accelerating in a straight line. What was the average velocity of the car during the third second?


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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.18: This question refer to the diagram below0- izn0wlk k6ycl j-6f which shows the position and elazli-k6f06 c-kw yn lj0psed time of a car starting 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 posz x6d+jygeonl72e2mz +(b+qtl,j9y xition time graph shown in the diagram o6x+jq,b7ejtz+zg+ ln2( yed y9mx 2lat 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 ix4+dzdu4kkqp2 u ls88c ;yns7nformation. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to itsqc4d8n+up74;sluk y2 8zkdsx 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 fonkt) hv,;myu. llowing information. An ideal elastic rubber ball is dropped from a hn.;,khu m) ytveight 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 wit94kahv1f khj.ga- x0 lh a speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the following scen )lwnl/x.ta, oario: 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 following scenam 5y8+hgzt3x7s)ks xo 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.
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 re./dtq12wbwpj9yf.qy4 r7c mvfers to the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the following scenario: Atiu45nsv2xfgaos-i9m1:+ r tg $t_0$, 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 horizontal table top and off thubp06.nuy u.p98sj5 qsd 5v 8ypjs2ty e table edge. Which of the following would best represent a graph of the magnitude of the ball's j p6tdypsb 52nu8up. ys. j5quys80v9acceleration 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 b-b 9snc*lztbh9m0 b;;c6,ke 5mcempi:czm7 between distance and time for an object that is moving along zb0c6mizb ,meh*;cbcmt ;9c:k 9eps5b7-l nma 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 the relationship between distance+lj7 4t)wuxgi and time for an object that is moving along a straight line. Bjg ltix)7 wu+4etween 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 th0l.tb . tfsg/nrown straight downward on Earth with an initial speed of 12.0 m/s frogf./tl0 t.bn sm a position 10.0 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 below represents a toy car starting from rest and u 9 -dahmsl.*fbniformly accelerating across the floor. The time and distance traveled from the start are shown in the sb9 -ahf.l*md 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 s3a ej8jm2s.pm tarting from rest and uniformly acc.m3m 2sj 8paejelerating across 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 stard:. ;72jvkcl -govbidtmq 7 e1ting from rest and uniformly accelerating across the floor. The time and distance traveled from the stab1-o qdvjli 7 egk:;7vdtmc.2 rt 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 acceleb 4l6cu zkne 0:el0 .ebz-fj7wrating ball. The position of the ball eac:z cwj00ke ue-b4en bll7.6z fh second 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 shows a uniformly accele*ty gsf8 nfd )1+ ugt5t,xz-pqrating ball. The position of the ball each second is indicg tf51zd-)gtx+f, p8ntsuq y*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 clowny e t8g- fd)ttso6xu6han21w / on a unicycle moving in a straight line is shown in the ef 6yt n2t/8w au-1d6oxthgs)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 cig 3nf4/bd nei-rcus clown on a unicycle moving in a straight line is shown in the graph below.bi-n4gf3n /e d
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 b2fzb24gp-v)p fiu69 cmj9 jx 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 a table topq2( jxdv4bt gvt)d4- k for 10 second j4vtt2q g4kx)(bd- vds. For 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 graph describeso/2umrz+jb-si q4u wb i;y5e8k:mja, the motion of a marble on a table top for 10 seconds. For which time interval(s) ej,;iqu mw uj4/bbz8i -myka 5so2:r+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 marblek b6ypj9:1cj6kn 5fv07tc wgi on a table top for cvknj:9 7t 5wb6 ijy6f0kp1cg10 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 rplf:3t45kj*h,l h.latlthtl ua8y- ;est for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward witet.bgp c*5 3zhh 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 represent the moti-o+2txo l/xf t l3lki7muni f*(-tlr7on of an object movintll7n-+ ifult23kifl(*rmo - /7xotxg with a constant 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 describem*b7l-h, jw*k ohglld l(v/ r-s the motion of a toy car across the floor f ljgv -**( 7hhlm o,rdl/kbwl-or 10 seconds. What is the acceleration of the 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 describes the motion of a toy car across ahwg,lj bws37 n1 ot+w,8wu8r*;nqfqthe floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second *8 ,jws;t17oqan w3wrb,f+l8gun qhwinterval 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 des.3bxmrt ;ck +w /ybo vi12ssb9cribes the motion of a toy car across the floor for 10 seconds. At what times or time ctbmro9k i 3bss2/ vy.wb1+x ;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 )s*: o0k i rihhst-:8ptcvuq, uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the fsqst ku-0r opii *,:8hv: hc)tollowing 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 vhh1 g fwk j*h.t*g1fz0elocity versus time curve shown. Which of the following statements regarding its motio0kjhw1zfh*1.f h *gt gn 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 veloc4*7w.q div+lxo)bki tl8w(za5 - mw ofity versus time curve shown to the right4ktolwf*5 ixav-8 odwz.ql( i)+w7mb. When does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of time, a tennis ball is move0i38axs(h 9xfin/ y.v uv-zdwd so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tz3 n0( 9-uyh/dfwixxvi 8a. svennis 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 ck ud,y wq/-9iand traveling toward each other.wiy/,qck-9 u d
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 posit4f fe.br d8;4:sw ohjbze 1qn9ive and increqbbdrf oj eh:84fs9 zn1.w;4easing

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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 averageasrd s jk-yaiydxb)s+.71f)a0 h)0q h 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 dwz :qv*8f c(myrt1)jga-)wso imensions, which one of the following choices identifies quantities that m*wsyfvzr c ot m-w:(qgj)8a )1ust 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 moverv6;1qk ( m/pshit d(bs $3.0\;m$ 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-tiwcv-2/hm*ql j2h hm k 2bqg-j(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-dx8b 8aj9jj)w5yy7 w udimensional track for total time T in two pa5 ww7u9)xjyyjj8d b8arts.
• 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 di3 6zbgu/t:k 3 0xcdzstraight track is shown in the diagram. The thick line represents the velocity. Assume that the car st3/bc:d xu dz3tzik6g0 arts 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 l5o0l)it 3jntv* k5k*rrz e:y motion of a car on a straight track is shown in the diagram.t):03l*5i rv kkryen otzl*j5 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 *jniv+hy:d:df(m1c2vpo f 2f an object given by the position vs. time graph shown. For wcy p2mfffj:ov(+hi* n1d2: d vhat time(s) 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 object gi1:cwa. sa2xhfsh*2 grven by the velocity vs. time graph shown. For wh:h a1cg xah rfs2.sw*2ich time(s) is 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 vs. timjb fkh 2(d,euva-,4aue graph for a fixed timebf ujd,2u(he-aka,v4 interval 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 along a horizontal liniq hsygun:-:k4.4 j4krn8j aie 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 t ) x.fgt4cmfr9)3he rnwo 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 reachesyh72 gndr4z rbr)ck :6 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 ffryn.8)q j9 .x(nglezrom 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 part-)f qs c g9mill7(:trcicle moving along a horizontal axis is shown. What is the total distancegcf lq-9 cmrtis:()l7 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 followm 4 +b car:grj*e)kochz8 0o,ying choices correctly identifies all of the listed situations for which there is a non-zero accely+) hrr,c8oz :bo0kem*j4 a cgeration?
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 qmb 7mw umx37(a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum b7 q73m u(mwxmdisplacement 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 itrf qux,r1w9b 8s velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving rqurw9x1f8, baway 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 m;iep e9tp;)fw:4 iwihpy,1el oving to the right on a horizontal track, each with constant acchewe9iii pep pl:t;y,; w f41)eleration. 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 a posiewv hem5m.vz1 ;w(y p:tion $x$, 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, whichn;sxjmil/ g+xfe+uc2u 44bq2 one of the following choices correctly describes the relationship between the average speed of th2x;sxm+ +q/l2j 4 cubgfun4 eie 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 timyk ks):e(uug6g 9q:7xk rj+vge, at which the car and truck tr7ge(vj+9k6y)sgu:xg k :qu rkavel 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 at4(dlre( + kw l4kaww:s the origin and will move along the x-axis. The accew4kws rw: lda+ 4((lkeleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of 9fzz2y vvxlc6m6u4na7:o w:dan object moving on a horizontal line is shown. At what time(s)owz n la9:x6vz72u4v fycdm:6 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 position vc f2hxv.ud;a-2l py :u);me iizbpn7+s. time graph provided. )2y b+xl npiudz;2m;a7:ve .uip-cfhDuring what time interval(s) does the mass have zero acceleration?


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