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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 ofs fn7mh/1 hgg;x egw17u smb20 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 timeng2 )o6g fnj g3b-l9im without reference to a particular di) bng 39n62gmf glj-oirection 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 complete/rl1o r6r8f dqlv:d: rs one lap around a circular track at an average speed of 50 m/s and then completes a second lap at an average speed of rr d 8fl6q:/l ro:r1dv$V$. 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 ats0/d /hdm nr:flft6 (yhcfx-* the constant velocity. If it continues, how f*ld/:hty6rfhs-0 / mc(dxnffar 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.*zec z kk17cn2 8g/bwg00 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 n /k8kbz2*7wzcceg 1g 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 80bg2r3-j1(rgc dj wu5dsaz 5m7 km/h and 400 km at 100 km/h. What is the average speed of zg7jmj5ar-sug3 wr2 c d(5d1b 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 motione +u)3uq gic;p of a toy car traveling along the x-axis.uug3q);ep+ i c The 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 toe 2xdim09fa 39 ajvuys.skw23 y car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in thema u .k3vsd2w9 9ya f0ijsx2e3 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 fsyij5p t.z)5 car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x dire) s.ypz5j 5iftction, $v_x$ 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 yggf (3:y7tc oof the velocity vs. time of a duck flying due south for the (ytfocg 3gy7 :winter. At what 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 rz6wkf7d/- bato the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during the t 7kf/ brzd6aw-hird 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 beli0dui mnyr 029clk4)d ow which shows the position and elapsed time of a car starting from rest and unium0n id2k y4 9)dlri0cformly 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 w6*sqiyf;z; cposition time graph shown in the diagram;zqw6cyf ;* si 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 following information. An ideal y/2abd y:b39 t-zqdqjelastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its origina :3t2 b9qd dyabqyzj/-l 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 informajin2l8 6z h3ymtion. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits nzjhi2 3ml8y6 the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with a sp jmal8ze5 0yg8eed 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: At03(sv k(3r thylzrk+5fj:2 przl* ts o $t_0$, 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 scf19it0q k9km 5 rz9ainc- qf/renario: 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 scenario:ax4ti -jie s ztc14m,/ 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 f *2y py4cl cwj2hnepz807*oojollowing 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 yxi,cj)nf.w* a horizontal table top and off the table edge. Whichyw ,j.)cnx*fi of the following would best represent a graph of the magnitude of the ball's acceleration vs time?


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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph repr 5-hs midbvym(w5igj oix::-, esents the relationship between distance and time for an object that is moving alonmm5 bios,- -w:ydgxjh5i: i( vg a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the relationship between b/ 4j uhuf*1y.pdp2kwdistance and time for an object that is moving along a strau2bppf*h.jkd/ 4u y1 wight line. Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object(i oi.vvtj7hlqk(7wv(2l4wrk 9 sc. f is thrown straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object wc2li.vtv( k4j7i (9hr7lvsoww(k qf .hen 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 r; ofr(w7bz bwv*6g)g aest and uniformly accelerating across the floor. The time and distance traveled fromr*fbg ow7av( w6; b)zg 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 repres:p7w s ,plc3hhdvz)2 zents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traz phwspd,lc27z) 3 :vhveled 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 beolzso;,1b.jb3t 6nrwlow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance trw ob to, .b361sz;ljrnaveled 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 3fa*omn t s;9sthe ball eachf*om;ns 9 t3sa 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 accelerating ball. The position og:qk t1vmt up80ls qm -:5/cezf the ball each second v:s qg8zlc0p5e tmkmqu:- 1 t/is indicated.
Which of the following is closest to the acceleration of the ball?


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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a c hrn)ts/hzh8h+vj5nr- mn 80oircus clown on a unicycle moving in a straight line is shown h-jhtnms ov 0rn)n5r/ h8+zh8in the 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 circus clown on a unicycle 9+k(( ic(1 bvjjahug,uojw i.moving in a straight line is shown in tj+b (u.hwiojvu ,1iackj((9g he graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacuum near the surface of the earp fx7rz.lo1 *u7vzb2t th

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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 marblemq1cta 2yt3;k hiu 02r*caxy + on a table top for 10 seconds. For which time interval(s) did t+kicct1q*y 20a at2r3u h;myxhe 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 describe24/ c6r*f wnvvqpqo j8s the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a p6j8/q wcno rfqp*vv24ositive 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 descq9u5y9,r( yy k 8mbei;;xjhmtribes the motion of a marble on a table top for 10 seconds. What is the marb95yy (mb uykhmi ;9t8qxje;,rles 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 jwjr6zx /x87:sbd/(ytyltm-be ; cq)uniformly 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 s 8)(h6gqleqmxj/:jo otraight downward with a speed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the following graphs could co , r498dq;y rzdqd9vynozo)gai7aku *w53q5krrectly represent the motion of an object movvarra9d goz yn5 ;q7kyd35q9idkz) u q*w8,4oing 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 desxw2 wpx x1g35mh. 0xwjcribes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at t = 4 xmhx3x 20 5.wj1wwpgx 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 cl cc3hxl:*s f0(r8tz a toy car across the floor for 10 seconds. What was the total tsc x0l8rzlf3*:c(h cdisplacement 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 ys,+n71wrsrj,wd6yj 2 v kch1ha s, 1tacross the floor for 10 seconds. At what times shvtw,jj,dr 7hn+16 yca2ry1, sk1 sw 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 4.50 s. Which onefh5 bj*5yf(uw of the following choices best represents the acceleration of thef j *(55wbhyuf 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 theoe3/9mlo/ zt )edgic ( following statements regarding its motion is NOT COdi gctme /o e3(zlo9/)RRECT?


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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 9.aalfz; qe4s to the velocity versus time curve shown to the right. When does the car have zero 9qeazs. ;f al4acceleration?


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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 bas*d wy kvr0u0n4l7fadbp023gll is moved so that the angle between the velocity and the acceleration of the ball is kep*r3sl07dw0 b0kfd4vngya 2 upt at a constant 120 degree. Which statement is true about the tennis ball during this interval of time?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are 150 (d9k j0pcqb pjza((:ykilometers apart and traveling toward each other.cj9kjb( dp0(:(yq azp
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 t0 -o ucm1wyss(he x-axis. When the acceleration is positive and incre1c y o-muss0(wasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitio9mnbsfg63 :g on 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, whic ; n14tu q9dh0ddl,tltrddetc):zk 34h one of the following choices identifies quantities that must have the same direct zdd4d3u, c ;rt9de nttkl10qlh:4dt) ion?

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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 move7eqkiw-9*z82dp7o j v ru7y7*hnon pbs $3.0\;m$ 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, a p.;k-f1jsis6 dkym* $y\;vs\;t$, 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-dimensionbd iui4 ,p+s9mal track for total time T in dii,sup9b 4+m 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 vs. time graph for the motio o(.u;vgei6hp/g fufa8sx5u 9 n of a car on a straight track is shown in the diagram. The thick line represent5g9( 68 oxeuv.hapugfu i f;s/s 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-f-u y-nrzz/qvvitbvc: l.- : motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the :b -lrtf-vn /vz-:i -yuc.vqzcar 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 obj6/ 5v5mt .devudtg :i ty--yqwect given by the position vs. time graph shown. For what time(s) is the speed of v.t /5uet-6y qgdvd:mti- y5w 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 mot 54fvjowkj5m4+iyjh +ln0 6btion of an object given by the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal to 0? wk 4i+m65lh4f onbvjt5+y0 jj


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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 for7na o a2hcxv*w9 a;8bv a fixed time interval of an object’s motion, what quantity has been daav97b2v* wh nx; ca8oetermined 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 horizon p pmk-+71b.dn loqaf7tal 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 t ;7i7f*xg0luual kln -rip 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 reax:xi5h61 (/v;boe lumkmn2z-cd6x4vjt f4c c ches 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 in a time dt9rq *h*3bbmrk*d+ zjtq /l +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 grap5zfqa7u3;n 9bwaegr, qo6t 2qh of a particle moving along a horizontal axis is shown;rw q59tf6u3aabq g,ozq2n7 e. What is the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifies all of the listct c*wc/)k*hfg6d*c ,x(f 3sh)v m9um m*za yued situations for whwh ffgc*6sc*ah t*zdm *y)mm3,uc vc9xu( )/k ich there 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 acceleration vs. time gr rrofh-ydgi+ek9-n31)oba /si z(z 6paph 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 star)kzp1zgba3 i n(oyr fi+d - h/69or-esting 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-ezld lk3v 8k /wnur;7 its velocity along a line vs. time is graphed. Which one of the followinzn;lr -ekl87 3 k/wduvg 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 moving to the right ov eitu;c,g8 l/hjskfj51c.0 dn a horizontal track, each with constant acceleration. At an instant of time, the information about the cars is shownglc81/ektu sj; h,5d.c v0fij:
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 l d8x8 kiy9gzbp-gw 58$x$, 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 shownd 1jw. vwsos-yo2oc :7 in the graph, which one of the following choices correctly describes the relationship between swyd712o- jw soo .c:vthe 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 t.1p1nmmfpex1 d4 ozokl (c*k4he following choices best describes the instants of time, at which the car and truck travel with the same d4elpkn1*moo1 pfx.4 z kcm(1speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rest at the origin and wil-9 z)qj ;rcafal move along the x-axis. The acceleration vs. time graph for each car is shofqrca ;9)z-a jwn. 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 graph9l me1ysx s 6+of6hs ,sr0wcrcw(c.6c of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatycwc w6e6ss(f xro,+h .l1rc6s m9sc0est 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 g,+)jd 7x blgmthe x-axis following the position vs. time graph provided. During what time interval(s) does the mass have zero accelerati+ l,bdxjg )g7mon?


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