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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 at a constant speed around a circular path vdkeoc/;6/rpg7 r c;i 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 reference to a ag) :to o gpw:kux1s9ze/41osparticular direction is callgz1o9o: 1/ psues x:4 gwotka)ed

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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 4e 7 qu*x3fn/ fv/yj3librp7mat an average speed of 50 m/s and then completesqr7m/fv 4jb3xnpife u3* /yl7 a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 smxw /k.6iy1n f46/n+wbwgm gi at the constant velocity. If it continues, how fagw6 .g xm+/wwn1mfib4i k6 /nyr will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank that is sliding at 5.po2 ioku./ 8zl00 m/s to the right across a frictionlolu.o 8kp 2iz/ess 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 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 100 km/h. What fa7z4k a:qbfp )2c7k on66qo +zgrv)ris the average speed of the motorist on thiszfko76gz v n rfr26)pcqb+q aa)o47:k 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 travelinymca 0lx7onda6 -oz5/g along the x-axis. The graph shown below is a pan/m5o0az 7 olc6y-x dlot 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 tr +y y9;sdg+e9gul j6vmaveling along the x-axis. The graph shown below is a plots gem9+j+ u;lgd9y yv6 of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motitf g/r3s j m0 x5ccy5yl:t2uv/on of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in 5cg/yrv 5l :umftx3 c2s /j0ytthe 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 velocityuu-e+ 2***jc mlsicqq vs. time of a duck flying due south for the winter. At what point dqj* c*+usumq2c e -*liid 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 pol:1k7 zb4y),zw woryjqu4ie:sition and elapsed time of :1e)ly ow i:ywq 4r,uzkb7j z4a car starting from rest 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 below which shows the posib ,4)ckp(pjnm tion and elapsed time of a car starting from rest aj (mpk4p ,bcn)nd 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 th*i2lfsbr05l7yrxc a,0uueg6 e velocity time graph for an object with the position time graph shown in the d cul00isrry la*2eu b g6,7f5xiagram 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 referao s * lk,hqf)o*bt vbq2az4;3 to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its orib;32s, o hqlf* za4*vbaqkt o)ginal 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 folisbe;72iaqtb 9e l*k 1r9 sv f)cs-h6ilowing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its origina-e1sl;*c) iita9i q ksshrbe 6b29fv7l 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 withj0wpa 31g2it705 z-pl g hivom 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 folt0bi7pwn7z,k 39tih hlowing 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 follo8crb3ybi9fciy 5 7ol8wing 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 t635 en,psnx o +w faacvpd-b-fa g803fo 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 follw-0qh s(f fj/q2p)abh owing 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 hori olu,gr.dgxvq y1 x:2)zontal table top and off the table edge. Which of the following would best represent a graph of the magnitudy :grg )dx.lo x12,quve 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 repre*gc,ub,sw-g2 )em k dvsents the relationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t emv )u,bw ds-g*2g ,kc= 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 represe cjsi+:cfh7w2 nts the relationship between distance and time for an object that is moving along a straight line. Between what time7f + ciw2sh:cjs 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 Eart utgnc. i8n*25iry gj)h with an initial speed of 12.0 m/s from a position 10.0 m above th. 2*utg )j8y iincrgn5e 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 repres3i x6hb( ah9bments a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the i(6x b3hh amb9start 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 represents a toy car starting d (hhc++f dar.from rest and uniformly accelerating acra f.c+hhrd+d( oss 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 andtzqjr(n3went7jkkw *p 9 9 8w: uniformly accelerating across the floor. The time and distance traveled from the start wnjk 8qkn (t*pt3ez9w 7:wrj 9are 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 tqakpktsn6+a5v vm3 )02 rlq y)ra+/bof the ball each t)tvk r m5 aa)+ qnsl/va36+k2r0bpqy 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 uyz;7pj,1, 4 f0oarhlmrxvtq 7niformly accelerating ball. The position of the ball each second is indicatedr74la, op h1f;yz7rvtq,0 xjm .
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 os fz )ljwh)fx1;e8;qv n a unicycle moving in a straight line is shown in the graph be));vf xs;1lqzj 8hwfelow.
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 mov-t9l sd6ebk e7ing in a straight line is shown in the grapk9t7 dbs-e6elh 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 surfacef u rov+3h6qjlmo(bi3 :)v ;kj 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 graphp exe vf/ufp6x68 u18s describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marblxep6s/v1uu p6x8ff 8ee 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 o; 2e42xvlfejhqz2t9 lf a marble on a table top for 10 seconds. For which time interval(s) did the marble have a posi4ej;z22h fqle 29ltxvtive 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 tablew*/okrhkk )g;z 8lyi 7 top for 10 seconds. What is the ; riyk*w8lg/7 ozk)kh marbles average acceleration between t = 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerates uniformly from rest for ew),xh3 l9fahqsn0)i 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 stjxf j- *7v(jfca:yfo2 raight 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 foll9vng7 ut k+ 4jda5;nwlowing graphs could correctly represent the motion of an object moving with a constkvltw5 4j+adug7 9;nnant 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 describes the motion of a toy car across the floor apg*282gx3cpe ko3 ce for 10 seconds. What is thkecpg axp22c*eo3g 38e 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 sw q173+c uuj7fkd,tuss w4 as7vxi86 the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the1wcdsw 7f x8k+ qu 4susv,77t j3i6uas 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 across the floo;cwev-8tiua(z kjhefold5ql 1 xc* yd;8j;( 2r for 10 seconds. At what times or time i (h(25wlv- u;k*; cxafiqy1jtzd jeel8 o8; dcntervals 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 4.50 s. Which on ;sj)tqsu-u brc.8jwc:a/k b 7e of the followw/7r q u8 sstb-kc;)u.ja bj:cing 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 i1nw,a0)rec yi2a2c m kvn,*e curve shown. Which of the following statements regarding its motion is NOT CORREC cev)y ,menw0rk2ina,* ca 12iT?


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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 to1 ,+wy/ /jf fjc/xgdtwp*7 emz the velocity versus time curve shown to the right. When does the xd/jjm, pc/7ze tfw/ 1fg*w+ycar 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 moved so that the angl*e2gga- dy3z ee between the velocity and the acceleration of the ball ise-g2yde z*3ga 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 ar3f;4dws0xkrk+s 1wb u e 150 kilometers apart and traveling toward each other.+r0sxwsf431 kbu ;kdw
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. Whe1hpc ( 8 l1)quxvf.rhwn the acceleration is positive and increashw .r uf1)xplq v(c18hing

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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 velocity isbp5 myzs)(ku (

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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 teme9n +/a kyop.*e crec;4b6 qxlr*9nwo dimensions, which one of the following choices identifies quantities that must have thybek9p9 xn*m +eeq4n. r*l;r / c6oecae 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 o8ti q*-opl+*r(x,k khpjp, h$3.0\;m$ to the North in 1 second. The car then moves at $9.0\;m/s$ due South for 2 seconds. What is the average speed of the car for this three second trip?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.05: The position-time, d9 ddedm4aj5m-le9i2 $y\;vs\;t$, 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 :g*kscc ybo5)o )ni6nthe right along a one-dimensional track for total time T in o i*)coyncbk:n )g6s5 two 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 igo6u:p f)i 75iuv9 zjvs. time graph for the motion of a car on a straight track is shown in the diagram. The thick5ipo6 uvguzf9i )ji :7 line represents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of a car on a -edyq5 hmxs 6n1s6ln4b6cr0n straight track is shown in the diagra lsenxb y4qrd65 cm-hnn1 0s66m. 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 oau,* 63xyhx-lvb .g58uixbb4n rp1r l f an object given by the position vs. time graph shown. For what time(s) is the speed of the object greatest? 4b vu.bx31hxlua6ilx,- rbr ygp*85n


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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 uy4:ialr fc; .of an object given by the velocity vs. time graph shown. cf y; .u4rlia:For which 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:3:.yz3 cenncbd9uze . time graph for a fixed time interval of an object’e33uz c9ce: n. dzynb: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 line with increasing /me4v gqlccc y,fx ,61speed.
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 tw 0:/vmwtwtix0. mzh *po 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 reache7 2qmyx:fejeywz-3)t9h wy ,js 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 res4z)6 jlg4aej qt 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 horizontal a4nhi1p f5zfdge 84 d)rg,zbo 0xis is shown. What is the total distance traveled by the particle from t=0 tobehd,zn8zg 1ir0p4f dg 45)o f 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 ident 46vgs5 cc/xvpifies all of the listed situations for which there is a non-zero accelera p5vs46v xcg/ction?
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. tb2r ytg zrd(/c7.g :lbpra1ctxh*-z (ime 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 maxim /zp21gr-zr a.btr7b ((tgdhcy*:lc x um 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 orihhqpz,j:2fh0o * djm:gin and its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper intej20 z f:j,p hmq*oh:hdrval(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 consy5osfz n4o4 (gtant acceleration. At foo y4z54sn(gan 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 position shj01dkxjb;,ze c5 g-$x$, 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 follo/ae8j:r dk t) 1vogy1dwing choices correctl1g8rv / 1atk) jdyode:y 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 tw 5, fq85vvehk ld/3grhe instants of time, at which the cavwl kd3 v/5gr, 8e5fqhr 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 andp hnw/.c w) 3;oh1zg(14ag wqaezw8 wl Q, each start from rest at the origin and will move along the x-axis. The pw4leg ;/ag(1 cw3w1ahw z z8qwn) oh.acceleration 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 1bsxe5i hnl *ea-ngg b56xabylo51 2 /of an object moving on a horizontal line is shown. At what time(s) is the object moving w in 65 g byg/*2exes5obhb-l n115xlaaith 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. tx 3a/ g; sy)7oeav7nwtime graph provided. During what time interval(s) does the mass havav77ean;3 t)wgy/x so e zero acceleration?


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