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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 constanv d(;ws,d 7f-n e*vojlt speed around a 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 9jki8m r ng-v.direction is callk.j iv8m-r g9ned

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular track at an average speed7:c7eyos1l)ftn -ma f of 50 m/s and then completefs 1)f otcy:-7laenm7s 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 in0,qn qia wn)d1 1.0 s at the constant velocity. If it continues, how far w,n aqiq)ndw01 ill 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 slq0dsgvcc(gx 8j: 2*fdiding 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 theqd80s fj:dvgc(x2gc * left, relative to the plank. What is the speed of the plank relative to the pond now?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 400 km at 80 km/h and 400 km at 100 km/h. What isavnwt(e/ch7iso 0x ). the average speed of the motorist on this o (wc etin.a v)/xh7s0trip?

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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 jj8v) i)s2i z;b 0n7zez-kxozalong the x-axis. The graph shown below is a plot ofv ob8 e) 7skiiz0);n2jjz-zxz 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 tee bum3 1uygmyq3x5g8gm-o2 8he; . zrhe motion of a toy car traveling along the x-axis. The graph shown ey-z g3ee38orm1 hy5 8b ;.mgumx guq2below 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 to the mot/ :0r8 dbbl;le orgd;tion of a toy car traveling along the x-axis. The graph shown below it;/ de8 lobd;rbgrl0:s a plot of the car’s velocity in 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 vel,9tdjhy1pbt r x09 *neocity vs. time of a duck flying due south for the winter. At what point did the duck stop its xn,9e*jt0 9y1 phrbt dforward 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 bel1 nkn/7 nx1ek-qjn 2bj/bp 5qtow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the averagpqxe 7n5tbj k2j nb-1q/nk1/ne 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 diagw9 5+ cq:jxvfvram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average accelerf5 +qv9jv x:cwation 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 ofml7f0m0 aj- hm*(m9r nr 2infu the velocity time graph for an object with the position time graph shown in the diagm fmu i(* mjmn2rhra-l70n09fram 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 idealc2cso6-xsw* x elastic rubber ball is dropped from a height of about osc*6wx2 x cs-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 following infor/rhl0ct4,: b2ymlwgxvw 0 z5amation. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the fly 05rlv: b/lgxc z2wtma4h, w0oor 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 withht o.f5g9ned5 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 follko1t 3; ljdd0 vnjafxhy.- z.vs p/j2,owing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
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 scenm mc-cxa6rpbf2,/ae+ 6,lgvd ario: 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 tlm j;0-w p(ts1zujna 6o the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the followb+id-sj -+m he qlk3b9.3gnge ing 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 horizontcar 15*q ddgp6-2jd ljal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball l6 pj dd*q5jg2-ra1cd'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 repaw5l,2 bcs-:lbn31zb 4y yq jzresents the relationship between distance and time for an object that is mo4bl 5lb1y2z an,zcj- :s3wyq bving 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 between dis gsjm, 1;78tjp t. 6vltrierm(l z;y4xtance and time for an object that is moving along a straight line. Between what times did the object have a non-zetrvt(.rtj86l y pz7i,ls xg 4mj1;e;mro 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 withqjtj6 pj7qi+.xy sfcc()t57 q an initial speed of 12.0 m/s from a position 10.0 m above the cj 7(7f+6j ixcqsq)jtq y5.tpground. 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 jt8/ioy vzt r8hj4,5xb57c1l o*ecey car starting from rest and uniformly accelerating across the floor. The time and distance traveled from tht* y548/1zej bect ,ixvr jc8oy5o7hl e 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 toxu)wjr56;zg lc s;- x6gz sa/qy car starting from rest and uniformly acsx6;;wxz r csu65j)gz-/ gqa lcelerating across the floor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting fro/*6ifuqv12fvqq;m6 3,g rn rm ru7uc hm rest and uniformly accelerating across the floor. The time and distan6hcfurm 7 q 2r1qvr/ig, uu3; 6*fnvmqce 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. The position of ldfw-a m/4kunj2ilvbkwja r2154j 04the ball each second is indicateaj0wr4n4vfmawil12u j /4k d kbl52 -jd.
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 ballah pamrz.(g08z*nb g k,krc; ;. The position of the ball each second is iznha.g( arzb;r8,kck0*p g m;ndicated.
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 mou ,6 (cxe;ezogving in a straight line is shown in the graph below u;zxco (ege6,.
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 o ;v)b7 h li;icc0n qgx6.t/loln a unicycle moving in a straight line is shown in il6./ )xlt lh7c b0q;gnc;iovthe 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 objecdz:-thn(*c uit 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 on a tab5r: z(mx-tzuq le top for 10 seconds. For which time interval(s) did the marble mr q-zt:u5(zx 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 graphzdy84qa+m 29am ewf6l u+s*ed describes the motion of a marble on a table top for 10 seconds. For which time interval(s) dif6u2lz+e89ya +ew m4d a sq*dmd 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 accompanyig tcc.pat/f;jth;q8,fl x(b7k:(l o-krk8 npng graph describes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s akj,c-pr h xn;(o.lp fk/7lg 8(tt bafqc;tk8:nd 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 xv 3fa/rt1tfgtvqx/l,;vh21x6ub+ o 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, throo9faxu 5k(h( gwn straight 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 cnx9949-nm tv/box y8 zq mg9izorrectly represent the motion of an object moving with a constant speed in a straig4ogt/b 99xq9vm8-nxi9n zyzm ht 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 i(xsln+pq-b6 car across the floor for 10 seconds. What is the asnip b+x-(q6 lcceleration of the toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a toy car across th8k zphmfa 4+ 9(ynn yo+o+d5vhe floor for 10 seconds. Wy+mh+8ya4k zo+ 5pvhfn(nd9 o hat was the 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 toy cb x /.i0c1x(9tozu kbz;uqq +jar across the floor for 10 seconds. At what times or time intervals must the net force on the toy catzu1zb/.(boqx i 0x kj;+uq c9r 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.r9 zoo .gy4s28 7mi,j frxtl49edu*xa50 s. Which one of the following choices best represents the ax 97f ro uar,2di 9tj4z48xys*m eo.lgcceleration 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. Whic.+a6sp29xevdl at9 0*gvkmss h of the following statementspvtsxv. +a2g*s 6sl e99d0amk regarding 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-axis according to the velocity czbow,n 6+j+ c) ska3uxhm pt;)6f ub*versus time curve shown to the right. When does the car bhbu +6)6j3oc ;w+zkcm*,t)a pnsuxfhave 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 interv6iwht 5j /ytcwt7(8t sc/q2akal of time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a /k/7a2h (scitq c5 twwy8t6 jtconstant 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 travelif8an+b/;j 632kt8ek hqx(8k c*htxl wha/ m oung toward each other.w/+/xat8uxmclhk6*; 83f qek ta8(onh2 j kbh
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 tophr);rfh8-g he x-axis. When the acceleration is positive and increasfp g;8r -h)rohing

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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 velocqxj1ncv /9.t5: xuqc,cgt,t( z,zn il ity 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 folldvja y;e +t.l5v6 rg0rowing choices identifies quantitiesd+rrga 560v je lyv;.t 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 mov8o 2 -loup aqs0o6rg8tes $3.0\;m$ 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, 2)n8b4 j:tmffc+d 1*-if 0kmenjlivt$y\;vs\;t$, 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-dimensional track for totalr0k)9 xiqzr/f time T in two parts f/ kx9qi)rr0z.
• 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 0krmdhxt *v37* xj, krob rgf4s(( kd8for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume krtbhv ,s(k (34ogxkd d*f80rj7*xrm 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. ti hz*( q)rb*56qzpn-xsda)y+jq r; ubame graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the vb6r+sdh)yzqazrjqab; nxpu5 ) q*(*-elocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the polw(tqxcz 7j6 xu;/x y3sition vs. time graph shown. For what t7zx u/cl6w jxy (;x3qtime(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 givenoo1mc slyu344nop3 (x+gbvi7si v b59 by the velocity vs. time graph shown. For which time(s) is the acc445cy 3vs+gn so ombibo37l9x(u1vp ieleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceluu(93jfzlj/ z*(k xu keration vs. time graph for a fixed time interval of an object’s motion, what quantity haluj/zk9fu3j z((xku*s been determined for that object?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object moves along a horizontal line with incr1dxyee v tbqk73*0d*d x jv.y3easing 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 partw8 t3iqg6luul n-y3d5 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 reaches the ground ihfht)uz93f .z 3np( * juslx q6+)jnmvn 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 r mpyxjcsbs:+ 8*uwssj7f jp692 gz i(3eleased 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 part:t;ur+ qq. 6xg/lpcg,:yzhlczs: g 8s icle moving along a horizontal axis is shown. What is the total distance traveled by the partr q.ugc :8:l /hx,cplzqgs tgs;yz:+6 icle 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 listrm/vxt zo- k7g 4a rs)0hx-s;ued situations for which tg0 xvu mkh;)orat 7-zs/4r-sxhere 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. tpg5x ea60m0g bime graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a a56e pmb g0gx0maximum 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 linwp 79r0fto -sue vs. time 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 originf97tp uos0wr-?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to the right on a horizontal track, each withh2 gcwkr 92iq9 constant acceleration. At an i9c qkgi2 rw2h9nstant 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 haj-l,v)a3c*yjj znlh /3kih* j s 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 the graph, which one osbq f*7mds dl5s 1loga /k6*k0f the following choices correctly describes the relationship between the average speed of the trucqsfo* 6*1dk7ldba /5mk sl 0gsk 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 inydsjmick79s v,/-u1ya w.( iestants of time, at which th cs k.u( - 71dii9,myvy/awjsee car 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 k tdx3-7 an8g iu/*obbstart from rest at the origin and will move along the x-axis. The acceleration vs. time - b8 a*/k3toindb7xuggraph 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 moving on a horizonta+8fokeul5f96 ja(m bxl line is shown. At what time(s) iu9f(fo65 lm 8+kaebxj s the object moving 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-axisw45yu4lmnvwqs9w( m5g rn59 v g7xkt4 following the position vs. time graph provided. During what time interval(s) do kwmu9 g455s4r9xg wqyv (5wlmvn74 tnes the mass have zero acceleration?


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