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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 oxxx2ky( 834gdka7dr j a8ni *xkl88aa 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 unit time without reference to a particular di;wjenu,eh 0-3hwtl r77.y czmrecti7whe; 7 3wcu ,-rlmytz0henj.on 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 lapncy vbfxs*9 29 around a circular track at an average speed of 50 m/s and tfb 9 yv9n2xsc*hen completes 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 s at the constant velocity. If it contilmpebdu ;x0 )7nues, how far wiubx7)ml;0ped ll 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 stationaryms1h , wo q *l3.fggjdof;-b5x 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 g5of. s-ghoqj wfm, ;1d* b3lx4.00 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 tr:km.ab ;zau4.kd2:u s qoo4z xavels 400 km at 80 km/h and 400 km at 100 km/h. What is the average speukus:axz.:b ;. 2okq aoz4dm4ed of the motorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling alq0r1xkc* /jll 9:zpucg*qj -s ong the x-axis sj*jr/lpc*10cz qgx l kqu:-9. 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 toy car travelingvkw(6n(e* azb along the x-axis. The graph shown below is a plot of the car’s velocity (wk nae(b6v z*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 mo0w kif3 fxi0aq:f /e4qtion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in ff0 iw/ x3q0q4f:ekiathe 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 m0 m bk0nw8 atf0 :e(pdgrwm81vs. time of a duck flying due south for the winter. At what point did the duck stopr08bkd01:fn w( 0mtgmew mp8a 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+vz9onvg37 pt shows the position and elapsed time of a car starting from rest and uniformly accelernzv7v 9 op+t3gating 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 shc, rs+ay:ry4l2b xad (ows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration la:xc( byy,4 +arrd 2sduring 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 7 ytad(yerb7i )zgw 4d)be3i1an object with the positionw a3)g biyridyz7 e1b)ted4(7 time graph shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the0o hcg16n)o4x+ scc9f c9goac following information. An ideal elastic rubber ball is dropped frg+cx19c4 ooh6fac0)gcn sco 9 om a height of about 2 meters, hits 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 )dtzo0 7a:gnnfollowing information. An ideal elastic rubber ball : a0godnt)zn 7is dropped from a height 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 tr- *7a3bed a9r1dpqy hravel 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 followingdy nxip:2)f*v 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 referscq to, g()(t gfc*b5ms 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.
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 t1 8ua/ldq)2 l(3mf nn m85jvqontg.joo 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 t5grqjh y9 wjvj kyey-j 1-,:(che following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a horx wj ;ehx;509tt8rhr yizontal table top and off the table edge. Which of the following would best represent a 8xj5xt ;yr ;09eh rhwtgraph 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 represents the relationship between distane n90 awuy+e/w cy z29lx4rz7kce and time for an object that is moving along a straight line. What is the instantaneous speed of tcxwe+a zw40elu 9n29ykz/y r7he 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 represccw gmgrq 55e:,+7z qeents the relationship between distance and time for an object that is moving along a straight line. Between what times did the object have a non-ee+gg ,c75mrz: qq c5wzero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an initiaa sidr2 oyon .pv3./m0l speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when it reaches the grouap/dom0ys.nrov .3 2i nd 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 vaqyhwbc3g./ (,w-em rest and uniformly accelerating across the floor. The time and distance traveled from the-c,y/e bg(a vw.m3qwh 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 uniformlmpr- odk96j 3jm v).s :lxdi-gvh;6xl y accelerating across the floor. The txo vr 9-mk m;:j3 6v i.6p-gsxjld)hdlime 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 0p)cl32stv5 xkyt )cgq1i, bprepresents a toy car starting from rest and uniformly accelet5b0ts 3q l i)cy2)px 1cgvkp,rating across the floor. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ball. t 9 h: 2zac+/rzc/qznuThe position of the ball each secoanr zcuqt9+z:2 h/c z/nd 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 showbva*oqr: t61ito4o5 yq4(s 2:xrxnvb s a uniformly accelerating ball. The position of the ball ea6o x:aq4(2 trbix1o vqs4tv*ryo: n5 bch second 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 7o ,:7c77vlwj /.y bparnqsionbve* 2circus clown on a unicycle moving in a straight line is showbn 7p27/i* .boovj nyrsaecv7 lq7:,wn in 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 xhg7rb ( zp 9 +vb lzi7eubzg8nnl )/a3s.bb*.circus clown on a unicycle moving in a straight line is sho*ve bp87(il.szu hb .+) bnz9rng 3gz/albxb7wn in 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 falls freely in a vacuum near the surface of the e2lnn iyol,9 :/sxmk8yarth

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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 top fun8l9/ppkjyu r 73jff cf/r,.or 10 seconds. For which time interval(s) did the marble hafl/ u.,u9pkj7rr3 pj/ fncy8fve a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of a marble on a tabt7ilg m:*ptwxfm/ ,+b 0fu7 nmle top for 10 seconds. For which time interval(s) did the marble xf in *ftmtm7lumg+7: p0b,/w 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 descr.mftn(gyjf* .vxz,5 cap 9q/ ribes the motion of a marble on a table top for 10 seconds. What is the marblesr v5g.za f xmf.n (y/ct,9q*jp 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 uniformvfa21q3pl l* nftt m-d 6vy3 ww/gt73qly 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 straight downward with a speed oeq + qpm33t/y )*tlfaqf $20.0\;m/s$, 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 mo m(e+j+o0e d ohku,dra;k(zn 3tion of an object moving e;k0h a3 uo drjz++n,oem(d k(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 describes the motion of a toy car across the flom(*q -stc y z9ywk+do i025uwvor for 10syd y0kio5*( v+-w9w2mc zu qt 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 descn8 etrduvum3i x w*g2.gvi79o:rr);wi1hp w .ribes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the 9u i:2ipdhw ve.71xgiwnr ; tog8rwur.m3v *) 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 floor 558 y(dbtf ya ds6psb 4guh/-+njugw3for 10 seconds. At what times or time inter-dd8ht5(b 6fjsbuypsag u 35+4wgn /yvals 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 onadp q2bgk o ls)m1s+q8z3c1 6qe of the following choices best represents o 8dq 1ql a1qc3km)6pzb2ssg+ the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time curve shown. ici0n/dy6 vb/ljaq-/Which of the following statements regarn ldai/iqjb-/y v0/ 6cding its motion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axhdt 42ulu6g )fis according to the velocity versus time curve shot2uuf ldh 4g)6wn to the right. 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 moved so tf x eyh0k1e03d0o)cat hat 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 this interva fc h1ek 0toxae0)0d3yl 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 apq1 0fj7uh , w6rr7pdhr/hge;gart and traveling toward each other.r;g jhhr eh1qf/,7d7 r pwgu60
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-a5fjk eo2v7zk 3xis. When the acceleration is positive and increak37 5efkvzo2 jsing

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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 wzlr 44p-6r. snn1oau is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, which one ofgb6fvy cf 897b the following choices identifies quantitibcg9f7 68vyb fes that must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car movesr96ou)m xxc.7hg8w ig $3.0\;m$ 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-*kr abd *3av2oq:p( jztime, $y\;vs\;t$, 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 righ:qn y+ ikxt0lra.jaw/1faf -;t along a one-dimensional track for total time T in two parts.wat f;:- xjn1qkr+ a0yal.f/i
• 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 grap 3mvm9dwnu7x/*q y(hih for the motion of a car on a straight track is shown in the diagram. The thich9q3* dm /7(vmx uinywk 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. tm)j 0fs) jct*xc7dnkoj 29c, oime graph for the motion of a car on a straight track is shown7j2 om0cts9c )o),f kjnjc*d x in the diagram. 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 motiohn.a 6*u,ht xqn of an object given by the position vs. time graph shown. For what time(s) is the speed ohax qun*,t.h 6f 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 ojlh k2( 7cz8x7br+rccf an object given by the velocity vs. time graph shown. For which time(s) is thckz 8cl 2 b7h(rxr7cj+e acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the are uh+6d)ncb4 iw 7tvor.d4w5zla under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been 7r4 5lncuv 64wd w)i.dz+tbho 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 a9b,+ l (ta y,nuvdjl(tr1g(a j 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 tr7 n ;iyu.ju+sfip 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 reaches the ground in/u (d8bwg0os k 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 groaw v:xknvvq )sw 985+rund 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 aloncp 7 (r4-syrixq/qykrzrc9xs +ator 8+(*;krg a horizontal axis is shown. What is the tota tc/-; axr* rqr4zoy(q7 k 9sxr8(kis+y c+rprl 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 follos11zu yg, 4hkgt y 0fu (a358y;egwwamwing choices correctly identifies all of the listed situations fo(hz u45g agu s1kt,y0;38 1wyemg awfyr which 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 ac;oa,,s ook /kn object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the o,socok;k ao ,/bject 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 alon( 93rnrkjm(xk3 r rzr.g a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the objec3(rjrr 9 rrz .(nkk3xmt 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, c;xvw2+n+zbu each with constant acceleraz+cxbuv+n2 w ;tion. 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 has1-7byk,rko /1i xd psl a position $x$, 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 tvl a4ee o+ l;s/f0ls.ehe graph, which one of the following choices correctly describes the relationship between the average speed of the truck to that of tl+ / es.;es a40flvloehe 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 0:pn iggi:t, bthe instants of time, at which the car and truck travel wit,i in:gg0t:bph 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 at qi+3p-q.y+s6c sp-oc tu (ia xthe origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following ch.piy-+3+(s6scq pou ci - qtaxoices 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 moving on a horizm16 xji+i kb n39n*ixuontal line is shown. At what time(s) is the object mo*n1xnui 36bkjimi9 +x ving 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. tim /9eg,ve: *jokmc)e +/uhm8ktb5 dlpb e graph provided. During what time interval(s) does the pmbkde+oh*/9ek b cv5/ u8ej ,glt)m: mass have zero acceleration?


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