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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 of radius9;5r7zkugg+ jpz ad skijw/94 $R$, 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 dist7quwx+ne(t )v ance per unit time without reference to a particular direction is calu)wq+ tn7(ve xled

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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 onfg+v/f98 cbi ;8x8 led pl++ru2kkdqae lap around a circular track at an average speed of 50 m/s and then completes a second lap at an average speed ofq8;kf8l kl +b8 +cexf +ud9/dgap irv2 $V$. 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*d/yc .pwo4 0vln3r ln 1.0 s at the constant velocity. If it continues, hylodvw pcr. /n0n 3*l4ow far will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 1 cdy ,raa h)b*z)y2vhxdj8 .i30-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 )d jv)2*.aach1rh yyd8 ,bzix 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. Wha l obr:( .yr8;sjc *vdulwpib6l k-.*ct is the average speed olvu bcl*dk6rwljc (s:8ip b*.y-o;.r f 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 alorrvw 9 hqyzc8b-fa3 85awd-5nng the x-axis. The graph shown below is a plot of the car’s velocity in the x diha538rc9-vqybf d8 wzrnw-a 5rection, $v_x$ 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 traveling along t2v(a (andifx6 he x-axis. The graph shown below is a plot of the c (aivd26xan f(ar’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 ft1 b9frvcxa9 r6 z6yx(g.u.orefers to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity r a(.9.y96v b6xfogrufxcz1tin the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a duck flying duef 6q7sa2s h:om south for the winter. At what point did the duck ss72m6s:o fhqatop 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 position and elaib lc3a8q,vzp2 t7n+wpsed time of a car starting froaz,2bil nt38v7w +qcpm 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 diagr aaqu06yu.n6x.m f7re oy*k9gam below which shows the position and elapsed time of a car starting from rest and uniformly accele.r76n0.uk*eg a9 6 uxamfoqyyrating 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 an4o;syapio6to-q 2p9 s 5i.bej object with the position time graph shown i;s.i6qyjis4oe-a tpop 5 92ob n 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 the followingn*9.ejq: 3v o/ 4t4we,pc tvuq6andot information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounjoa: 9p e.4cv t o3n6w4dn,/qq*utevtds 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 information. An aep:db46o14+a00egbl sbzg pt vk+(xideal elastic rubber ball is dropped from a height of about 2 meters, hits tk0 oxv b(gped4bzlae6 :b0a1g4+sp+t he 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 tqm*nzc*2 *l. cl 4llndravel 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 tob5-ybsq vr k)9 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.
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 scenario: At k ,brgn -v5vp/$t_0$, 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 scena62gl mht7g zne x54nk0rio: 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*rak+ vvls2tx u17w4a 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.
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 ruxus oc;ahj0)d6s tvg2) 9av-amp, 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 acceler2ut j)- dx9v0g;hsa)s c6avuo ation 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 t +1l6s* x+k ihjbusv8zime for an objec +uli*x+ b zksh81vs6jt that is moving along 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 beifcij1( bv1 qkv r,-crs9ty21ezaed n/++h 7jtween distance and time for an object that is moving along a straight line. Between what times did the object have ajb(ike7 h+di1rnc1/ feasj+ , q-vt2rvz9 1yc 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 Earth with an kvp 7vdr yzl:(u* k0fo,17gyiinitial speed of 12.0 m/s from a positiogy iozdu*vfk:y(,l 0pk1v7r7 n 10.0 m above the ground. Ignoring air resistance, the speed of the object when it reaches the ground is

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram b6,g1:tcv fr *b(nis zjelow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in th6g zt:bvs*jcr,1i n( fe 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 c 4abxtijei 3sxc82q,fj1 / ;elar starting from rest and uniformly accelerating across the feq,i a/csjx xfe13 lti;2b4j8loor. 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 and unifor8 f;+ndmzp 3ot ))/jj+lqcfgbmly accelerating across the floor. The time and distance traveled froqg +cdflj8n ))bpt/+f omj z3;m 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 acceler kb.vda f,y3p;ating ball. The position of the ball each second is ind,;.3a k dvbypficated.
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 of the - 3j8bi m.oovlball each second is indicated. 8moo3vil b.j-
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 incu/c3llu y)0lqd v o /.fj7a4t a straight line is shown in the graph be q/0lv 37j)u/do4. cucaltf lylow.
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 unic/ ;/m prtrh)*8yzdsir ycle moving in a straight line is shown in )p8 i z ;rhty*srd//rmthe 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 objeciiabc f+nc)x0 q92mnb m-:rcve qp084qhc(w (t falls 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 of a marble t* , kajb quz-xmet.(b89y1zqon a table top foztm -k(,ey bbu*. z19aqjq8tx r 10 seconds. For which time interval(s) did the marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying grap:8t or7vb9 vc q8w*prbh describes the motion of a marble on a table top for 10 seconds. For which t7*b :vov c8rbq wr8tp9ime 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 describes the motion of a marble on a table to2xkx gou3e3 bn , pl;;h8h)incp for 10 seconds. What is the marbles average acceleration between t = n ik)3x 8he;c,o;xnu2l 3hb gp3.3 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 a ti8kl48: ophmocme 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 spe:kxq nh1 9r4f*tl0h zbed 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 grapvwzpwn ab+26 1qd::xn hs could correctly represent the motion of an object moving with a constanz12w6p:n: dvbq +xnaw t 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 tz;3 vm/v- it ic;6xfpche motion of a toy car across the floor for 10 seconds. What is the acceleratiom;x 6; fv/pc-3 ctzviin 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 ygz:r..gzi e4 describes the motion of a toy car across the floor for 10 seconds. What was the total displacement oz geizr.:g.y 4f 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 grap7dg7h1ny +r ybvb/fo +h describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must tybfd g7+ 1+ovyb 7h/rnhe 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 km8g q*qy t b* i*kecs0sk1.wyj:/hr in 4.50 s. Which one of the following choices best represents the acceleration j q**b kq :g8*i0cyywks e1.stof 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 vc e*rp.k8 8*afqdpeq 1p-ect0ersus time curve shown. Which of the following statements regarding itsr-kdp p18f8ce t.ea0c qpe**q 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-axis according to the vel (sj,g (fttmqh 3ma +tvow(;/bocity versus time curve shown to the rims gmbj(at,;tt/(wovfh+ 3q ( ght. 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 that th 9qpg.di/kybsyx++zr7b;m 5e e angle between the velocity and the accelerationm;kyx yr sg++5. iz p9q7ed/bb of the ball is 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 are 150 kilometers apart and traveling toward each otyzdp)g(k/ ki 1her.1kkg / ()diypz
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 positive and inc dv5hw(,e ybl 0c5;kxh wlkc5xeh v05dh(by;,reasing

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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 vk zfc5n fzl6m3g :f4c3elocity 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 of the following choicf16b.a:bqjp9p fe q3des identifies quantit q3fe:.p69a jq dp1bfbies 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 move3p4 *fdyvgb3gs $3.0\;m$ 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-khy 8pd(9tfj k*)p ty+time, $y\;vs\;t$, 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-9/9p v p;kvkscdimensional track for total time T in two;pkv99 scp v/k 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.b;(z3 a ,mhett time graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the vemzt, ht;b(e3a locity. 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 ofaq+2- .t5o fqibqfz (j a car on a straight track is shown in the diagram. The thick line represents the velociiaf.q b t2z-+(fq5 ojqty. 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 moti :9u8e1r np*x4rdvjf lon of an object given by the position vs. time graph shown. For x4 dpf8*vlr jne9 u:r1what time(s) is the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by the velocity y.pp p0zi;o x3vs. time graph shown. For which time(s) is the acceleration of the obioxppy zp0; 3.ject 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 the5v k9z+jwmpwzmj9o*3jn *)zs area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been de95 z jozvw m)3n*spzm kj9wj*+termined 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 witj+4uq-j83eri 9.z no,qb-ukbi ran+ mh 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 ave/t8i9 w lqje) (x2sin 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 objectb)c; p(,qbif t9sh 9mq is released from rest and reaches 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 g:l6ym x-m; hcis released 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 movj gckniub- r) ,)z.el0db2p w g1-rkz.ing along a horizontal axis is shown. What is the total distance traveled by the particle fromn1 p li-ub0kjb2ekz) crw,g- zdgr..) 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 correctlxfy)hjpee-tdn/b 0 xny5 .0)uy identifies all of the listed sib fehxtp0)de5 . n0ny)y/u -xjtuations for 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 an object moving along a line iya 0q1knet 3/hs shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its /3q1h0t keany 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. time ij:c2vi xicy1 c-or1c 54bnq 84woz(s os graphed 2-1qr 8icn cvbzw cooj54: (cy41ioxs. Which one of the following 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 on a horizontad ykq(jpjc8m*e.b (xg efa6 d.8 2nje5l track, each with constant acceleration. At an instant of time, the information about the carx.(kjjcb2 6(npefyq85*8 j.e mda e gds 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 aw jxwz 7ukmgjoo*75 ,3ipg 5. 5xfcj4pkyk) k; 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 incz ylezp3p6 28 the graph, which one of the following choices correctly describes the relationse p cz3zy28p6lhip 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 the instants of tim xu:xye (l- x7psljokd7j+1/a rif v/:e, at which the car and truck trla: 1:/exjk j+fiy7xpd 7( ux- rvslo/avel with the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start fqv 0cd 9dbr/7q ;ld3horom rest at the origin and will move along tb 90/;q7ddcqlor d3hvhe x-axis. The 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. tiad z:bpq4cvov (36(vvme graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest s3qv6oc vv:p a v(z4b(dpeed?


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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 ivxiw*tz sf(u,y)9n *t6 0vlqe graph provided. Duringw) tii*9*slv0u ,tzqf(n 6vxy what time interval(s) does the mass have zero acceleration?


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