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习题练习:Physics Bowl by Topic 2: Kinematics - part I General Motion



 作者: admin   总分: 72分  得分: _____________

答题人: 匿名未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle travels at a constant speed around a circular path oc1+jtsan2r2d yi 8v*;mszm 9ir4tr y; f 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 particulzo2n;v jo3f 4oar direction on42o3 o;jfzv is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a cixc,s6,ncpdk7y0u rgx*(eq h;f j5 x.mrcular track at an average speed of 50 m/s and then completes a second la rc.y0fx(;*knh upe c6xjdxmgq75, , sp 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 s9muhp5yez(pjre 22 d5hn v+r5 at the constant velocity. If it continues, how far will ir(rnv j5 u2z+ hye dmp952pe5ht 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 sib6;i l0( gt aeb.d-xetationary 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 ofx0;b- .i aed( liebgt6 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 zfve:1jh ,6ut and 400 km at 100 km/h. What is the average speed of 1t6: u,fjvze hthe 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 ,oo+aoyu) (ja/nybm8a8t, rwcar traveling along the x-axis. The graph shown below oo8 aot(j, ay),myra+u w8bn/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 qi1(7djz .phnto the motion of a toy car traveling along the x-axis. The gra ih(zdn q.7p1jph shown below is 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 slh 5r6ohipsq 542f; und/l5zto the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,6sn2q 5lo;4 d hr55pfhluszi / $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a dusv., + :(onkdfpsbar9ck flying due south for the winter. At what point did thedrn:a ,+ bp.s(ofskv9 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 positya3tws::dk:h ,5ggsr .. szntion and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was :.aw:rs5sntgd kygz:tsh 3 ,. 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 x (bq)hn-l(,t: tak vibelow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second intervalk-vxahnt(l ) (,q t:bi 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 wi4j/ot tx mg/s2th the position time graph shown in the diagram at right? x4 sgtmt//2jo


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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 idc*cxs,0 1f lgheal elastic rubber ball is dropped from a height of about 2 meters, hitf*h01lxc s g,cs the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following informa j36p;g gn0 rgw ;a..txnpjqzn5s39ortion. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originazpagtg3 rj39j 0nw.rxnpngq;. ; 6s5ol 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 trave8i..pza wr./l vt-cbgl with a speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the followiq k8tl2 nwcvr t8.w02qng 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 fou2 sm-5 xdp :mlvn,jp0llowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following scenariee+7rdye n5c 4o: 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 followinqps 2 wclox+*7g 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 do4fvc0f1gxgb2-qw uj. wn a ramp, across a horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's acce 1-gcfw2q 4 gv0ufbx.jleration 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 between distance and time for amjis4 4 vyo6yek39(fsa3 (j qan object that is moving along a straight line. What is the instantaneous speed of sv( emj qa3sj44i3o6y ky9(fathe 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 theh )r,t+uvppc - relationship between distance and time for an object that is moving along a straight line. Betwpc trp-+h ,uv)een 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 thrown str-j9e0-fnvm tj1e8lrwkd ox q2r )2w*eaight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the groun 2wx -1vrk* 0retn-fed)ewjl8 o9q2mjd. 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 sta v oa(xc1u.nf zeh9k-dk:dn 2k83-rolrting from rest and uniformly accelerating across the floor. The--:( k. 1cr9kdkn2zlfuedo 8n3o vahx 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 represents a toy car starting from rest and uniforluqh bfz nl;b(0 ((zb037lzhdmly accelerating across the floor. The time and distance traveled from the startl0bdbz f3b 0h;( (n zq7(hlulz 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 represent j 1 3fd2hulvo.djri6.l9o)ygs a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start arvd2.lhoil 3 dy9j1or6)f u jg.e 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 acceleratin4a.m/y.yn rbgpz3nx;ch : nvb/u1 z8zg ball. The position of the ball each second is indicatedvcn h./rb p:3gyzyz.n 1/;4zbxan8m u.
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 acceleratigc.i)ko xq 9v6r6my3nng ball. The position of the ball each second is mx)9 r36.kvin6 gqycoindicated.
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 gk ;(e cmi28szxgmqtm*w (t);a straight line is shown in the graph k;)*ezs(8g ;(mmmi2cqxwgttbelow.
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 mo83g92vwjhwk le9x3eq6uo ;lwving in a straight line is shown i89lw2 q3eg6 ;uvhkw w3 xlo9ejn the 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 fallsdqg w*jash.7aqgkg9j+ 4bm 5- freely in a vacuum near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion o63tq:jv,o7b pblg /fkf a marble on a table top for 10 seconds. For which time interval(s) did the /bq b3 kgj:6oplv7t, fmarble 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 xp/dg(kzn4( k8vm is7 on a table top for 10 secondskv7 x 4/(k(8zp ngidms. For which time interval(s) 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 0oo(v1jdk-ml describes the motion of a marble on a table top for 10o0jvd l-k( 1mo 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 pck0: kts5dds9 no2z9 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 straight downward with a ;kstas 1p*r6h 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 corah5j*4vgv i 2lrectly represent the motion of an object moving with a constant speed in a straight i h54gv2val* jline?


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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 greh 1 fvz*na7n7xvj2o. e:(rcn aph describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car e2cfvn r1 nej7v(.no az*:h7xat 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 describe99( za15khubqku s,eis the motion of a toy car across the floor for 10 seconds. What was the 5ub, k(zq9es1ia9hk u total displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the motion of a tom5* 2infz4fqud e8l4il:4g-3 i ztsqn y car across the floor for 10 secoz 8l5nmq2dieniz4q f l4-3f i gt4:*sunds. At what times 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 62f xivs8 xj(vqh6jo1from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleratisvx2vo iq6 h18(jf6xj on 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 timerqy2dn:a* vvh1 7di i( curve shown. Which of the following statements regarding its motion is NOT CO yhvi*(a 2qd r1vdi7n: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 to the velocity ver5uaglb6y82 op( pwu d,sus time curve shown to the right. When does the car have dp 2g8,p6 uoblywau5 (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 tenni9tymx2-ne +m/ni d.fzs ball is moved 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 tennis ball during fm.2z9+in -end/m txy 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 )y1o w p/xutz-p2pz;2 u k)zueare 150 kilometers apart and traveling toward each other.p/po2k)-;2wuztzzp ) uxyue1
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 fv seg//8qmz fe-u+q) positive and increas / u/zs8ef+-gqqf)mveing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitio)t7myltus ;k -es 7 paz1.8syjn 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 inzmv):p4act5 c.zmgn, g;r(rg two dimensions, which one of the following choices identifies quantities that must have them5pn (;zr. g c,mrgav tg)z4c: 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 move:yh9+d3 eb pxbs $3.0\;m$ 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-tx;z+q f9z- bzw if85xnime, $y\;vs\;t$, 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-dz6wfrb.r. hmg7 1spg :imensional track for total time T in two parp6zrm . 7wg.:h gsfrb1ts.
• 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 cari o:-wlzz6a2xz:1 y ul on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the cz-xzz2:6aw: 1 u lyoilar 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 +zcck-fm2u- fg8i6j8 vo odr8d/yxs3( z ejy0vs. time graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume tha8 06+dmiec2d rvg(y3zj/ sxf8- -f8o u zojcykt 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. t,c j6so 7z4hdmime graph shown. For what time(s) is ,s 4m6odz j7hcthe 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 given by the velocity vs. ;wh35 ttt pca;time graph shown. For whic;tt35awt p ;chh 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 un )88*hw km0,r(selsj 6 uxng6 9oybjekder the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity hg6,*njwu8bs8e em j0rkx ()skh9lo6yas 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 kvsf9gv 04,6hv k1u ppalong 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 part7n*qfla yy 4:9l*sp9 ;rvrxk(9-wahvbij l h/s:
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 reum4g8en /c m2*gkr +bjc11bur aches 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 releasedp6/d )d5zinub from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle movinge yl8 r-:y.ubl along a horizontal axis is shown. What is the total distance traveled by the particle from t=0 to t=10s ?eul by8ryl.-:


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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 liste*;s v.sd3+ik 8iofog td situations for s+ ksovi8.3if* tdo; gwhich 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 graph for an objecbsus:f1z 2umy8h-* gstx:5 hl t moving along a line is shown. The object starts from rest at 8 *:uh lsb2zsg yf5usx-1hm:t 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 along a line vs. ti 1on-, yf0khpqme is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving away from the ori h q1fonk,-yp0gin?


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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 horgqr;hd a0)n:qizontal track, each with constant acceleration. At an instanthdgrq;: q0n a) 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 positij-ju s6i)(s we)q/vhion $x$, 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 olwo x-8t3e8 puf the following choices correctly describes the relationship between the average spex u8t8l- peo3wed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describes the instants o(o 0l k5x u2ukpjb3c1df time, at which the caro10uc 3 lkj52 xp(dkbu 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 startty fzhow c0ldp:g-jg rhei9/ p -8;,:z from rest at the origin and will move along the x-axis. The acceleration vs. ti :9p0 ojlc hyw:h rid-;g-8,pzt/fgezme 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 an object moviaam+e0n4j a rx f r)4mj4 n7m.s(idwq4ng on a horizontal line is shown. At what time(s) is the object mmajdn.nas eaj)mi04m w4 (x7q r44f r+oving 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. time graph pro ac;h-;8tcyn+ tk pz,uvided. During y8a; tphk,tzcun; -+c what time interval(s) does the mass have zero acceleration?


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