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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 coniwy ni9.icw;: stant 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 disc9o u+ot*o6yz tance per unit time without reference to a particular direction is coot 6yo*cu +z9alled

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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 ar m*ey;. nltyf8kz3v9ji6q) c jound a circular track at an average speed of 50 m/s and then completes a second lap at an averagj; yj6e.m9*cy lzt)i 8qvfk3n e 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 move q*):m 1 tly.ygytrunjzxh./ 8s 0.80 m in 1.0 s at the constant velocity. If it continues, how far will it travet:t8y.mzu */ 1lr.yxgqhnj )yl 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 s (ysyo 14f gp8ou,avg;liding 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 of the plansgu(,f4 op;8o gav 1yyk 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 ith6o(y) p 0f70ragg jr* m pyx-6vy;ofs the average speed of the moto70fj 0xr t6hp-fpy6o*y v(a;gmr y)g orist 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 5 r1ooisaxn1k 56;uj ca toy car traveling along the x-axis. The graph shown below is a plot o jasxi; 5o51kr n6u1cof 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 ol9rix2 4x1m**k/d, 6 gr zyyy tktvu(traveling along the x-axis. The graph shown below is a plot ov d6muor iz1 gxl/,29yyyk **r(xtkt4 f 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 motion of a toy car tra )gjmp79cb3g.r be/w,tdfdt73e6/qm0j qva d veling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direct0bd) p,c/qeedda f36wmbjjq/93gr mt 77 tv .gion, $v_x$ 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 due ufz:62vq q:*a ap/hzvwm;q7 dlmy,(g)v y 2ba south for the winter. z2mylda :,uv/hpy2 mzfwqv7);va6q b g*a(:q At what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram belovz,, jwo( 6f zlx j(d70qcy5 irua5m)qw which shows the position and elapsed time of a car starting frorlxojqwmy5 f6a uv , ,zdzi(0c5)(7j qm 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 diagram below which shows the posith+tu n0 edlu yf40s.y/ion and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average accelerationes .0/ytd fh4u0n l+uy 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 4 lx1q9x*fdeivelocity time graph for an object with the position time graph shown in the diagram e941d lfxqix* 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 fozu5t1, iwotxr 04l2mzllowing information. An ideal elastic rubber ball is dropped from a height of about 2 t i4rzm0l2wzt,1 5x uometers, 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 quest141dqnoe(ipwlq 24 * dgcsug7ion refer to the following information. An ideal elastic rubber balls*gwiep41u d 2 7ndog qlq4(1c is 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 travel b tn. :dpkihtwfhv9aa9 k.8 xtwm6-04with 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 following sc9y3 rgytlf05y +gh)gnenario: 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 sxpt( wwjyx 6xv7 +g-o2cenario: 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 scenv;)w)zq2gsc y5o,rz.no l aw(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.
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 9asyy8ch ct.+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.
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.g:1oz c uyqy: horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's acceleration vs timc. o: :qyzyg1ue?


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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 reprg q p9mu8f hih3o-9l7lesents the relationship between distance and time for an object that is moving along a straight line. What is thofu hpl hm-g 899i7ql3e 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 distance and time pm fat4x pd7 c+*ve8k1for an object that is moving along a straight line. Bec7vdfp*a8e 4p m kx1t+tween 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 i0h33 vl(fctkthrown straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when it reaches thv (chki3l0 3fte ground is

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represents a toy car starting beypsa. 4fh w p:bu)+t0sf(4tfrom rest and uniformly accelerating across the floor. The time and distan t.s fup :b+e0h4pb()tf4aywsce 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 starw w6 9envq.2qeting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in v.qw2ewnq e9 6the 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 uniformly c2j+)j k( scrcaccelerating across thek2 j )c(rs+jcc 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. The position of the ba msr3z ;r)87lx,t dtj7e.fb.dlatx8lll ml88 ldttb.;ar)lzdext r.7j7,sx3 feach second is indicated.
What is the average speed of the ball between 3 and 4 seconds?


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly0v k;l:evem-x f)h+zv accelerating ball. The position of the ball each second is indicatedvlfv)e+-;mxek :0zhv .
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 a strai 2lcis2mbo0;*hbp to 7ght line is shown in the grap2s pt*;b2oiho7l c0b mh below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle moving ih:(tu8w f3ku6/srzn kn a straight line is shown in the graphufh6zwkn/ks 38(: u rt 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 f be1 w(u.lyni.alls 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 table top 8ksx1(5g i)o jilh(vc qe)kk 6v 9gv*qfor 10 seconds. For which time lik68)g*15qexsjohgqk v) (9kv ic (vinterval(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 graph descrixqqv- knub6 z04 r5thhuj;y 97bes the motion of a marble on a table top for 10 sec9b hz0ytj; k6 hun q5xq47uvr-onds. 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 describes the motion of a marble on 6,ol10 8+los2-ecyhn ynpzp u a table top for 10 secondlszlo 60y- o+p,up1cn 2e 8yhns. 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 rest for a time/,7 ch,vgpg0dpfkrj4:h s sa3k(2y q i 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 oy3xy-( akxb63o egt(cf $20.0\;m/s$, 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 graphb:xm avj)2 4pmqnzxyw8(w9*fs could correctly represent the motion of an object moving with a constant speed in ajaxmm29)fn48q(wx bp* yz:wv 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 des1vxldbs6 .3q3 qq.hzy ,qoz5lcribes the motion of a toy car across the floor f,b.yh .3q vzs 1qqql3o6xd lz5or 10 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 describes the z,p0nvw2i*6*i ( o v4g ajjbjjmotion of a toy car across the floor for 10 sjj2i0 g(6* ,izj4*jo v wpbvnaeconds. What 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 graphqx7 n2p6vve 0g describes the motion of a toy car across the floor for 10 seconds. At what times orx62 v7eg 0pvnq time intervals must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. )o1;4 yxm 8e z.0af lfx2zqttcWhich one of the following cht;.l4 fc azfxy)z 2e80o tqxm1oices best represents 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 7yn4cn nkpb418uwer - time curve shown. Which of the following statemenb wcy4 4kn7nr-e18p unts 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+:klfupcz 4 -t8nqgj404qs lz versus time curve shown to the right. When does the car have zero ac84f:ul4sqqc0jz kp zlnt+-g4 celeration?


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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 the ang6fe 2epvwz5(htp(k n+le between the v6t2 5wnh(ep ( f+vzepkelocity and the acceleration 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 kilomc+zlg3g 6(enhxu2+ yreow:a1eters apart and traveling toward each other.1e2ycwxhn lze36+oag : g+ru(
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 inx1 ch0z xo6vt:c0c tv:xh6 xoz1reasing

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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 viyis9cb+ nt*jcm 07 e0elocity 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 6yibj4 3s qdf9one of the following choices identifies quantities th 649fydqb ij3sat 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 moves r /jcjb yn);/9zpyqke.fw))x98x ,lgq fjw5x$3.0\;m$ 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-tim q((ir9a)-aopleh-c me, $y\;vs\;t$, 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 alonpp:d0(t2xa*mp4ykb9sm1h hm2 dz*r9t ;ud p v g a one-dimensional track for total time T in twt2b 99xph0p;dmus2 d: r z t*mp pym4a(k1vd*ho 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. tipvj */q y5g),wsoj*)v-e) 8 o5gjzfd eh pmt6fme graph for the motion of a car on a straight track is shown in the diagram. The thick line representezh p go vjws* 8e gjo5f6/)*q5j-,pm) fyt)vds the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of a car on a straight track: l:zb,qx 1 g7l8lbfnf yp*n4f is shown in the diagram. The thick line represents the velocity. Assume that the car starts a*ybfl:z 4lpff n7ln8:1gqx ,bt 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 w53olu /2tqbtkp-0 46gk 4sol djo6m xan object given by the position vs. time graph shown. For what tm546u t6b4gpk q3dsojl0 2kwtlx/oo-ime(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 give9-k so7 qy0bod1kjt(w+ 2zdwxn by the velocity vs. time graph shown. F wd o9 jo x1+t(dby70kqwk2-szor which 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 under the acceleration vs. timk pr3an) 2)xft /i,ohke graph for a fixed time interval of an ob32aifnrh ) )oxt/p,kkject’s motion, what quantity has 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 inj2hrf( h yr t0tw;;p3screasing 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 tri y,t jq4 r6hyib/oc10rc0(ys yp 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 a t0nv+ d 3zo9js4 jsek;kime 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 / by9q5((lt/z ehcrf mfrom 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 movi1wdznxadtmi /q) d1;xt 8mr,, ng along a horizontal axis is shown. What id,mi1t 8nx1 dqwz;rtda/mx,) s the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifies af-wl3wyrb1uw*edmk o o ,67s 6ll of the listed situations for which there is r7 wkw y1b63*fdum,-e6oolw sa 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.crl82c7 o -r4oqqz4 ld time 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 t72 cr8q-zr44oll ocqdhe 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 vxus)2gg9 4pli/v9znlelocity along a line vs. time is graphed. Which one of theng9 sulxl/ p) gv4z9i2 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 horizontal track, each with:ehtucyj+*(ba7j5el constant acceleration. At an instant of time, the information about thee*j:c y5uja +tbhl (7e 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 positiorm9-h3*/,eybvuo k0 h,aawyxn $x$, 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 of thml*u bf3/d/ xte following choices correctly describes the relationship between the average speed of the trt lfx b//d*m3uuck 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 follow u/x1c ao0s2z 3a5qpbiing choices best describes the instants of time, at which thesa 5 xab03iz/2qocp u1 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 Qil; 7hi:z i1uq, each start from rest at the origin and will move along the x-axis. The acceleration vsi 7 q1:lihziu;. 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. time g5m:n1ol 9pjp 8mcn km(raph of an object moving on a horizontal line is shown. At what timp8p (l95n1mjmo knc:me(s) is 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-axis following the position vs. timex:2wml6i tpt *cy d2rho2wu .6 graph provided. During what time :2l rit26ww y6.cuo*hm2txpd interval(s) does the mass have zero acceleration?


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