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



 作者: admin   总分: 72分  得分: _____________

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

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle travels at a5aw f9wbwup;0cp,4wv constant 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 particu,ob9 y+k)j l7d5ya hhclar direction is cal 9 h)dyoc,7b+ahj5yklled

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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 am1q rn.yd *u+vt an average speed of 50 m/s and then completes a second lap at an averagvm+n .ud1q *rye 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 moveqnfd x6q.3 j8ck la)u/s 0.80 m in 1.0 s at the constant velocity. If it continues, how far will it travel in 3.0 s? q.8flxun/a)c63j q dk

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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 sliding at 5. lg6smy-+ n,pt00 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, relatitg6s,-m+yl pnve 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 nzi) 3y dugg98 mp3senuaoj05 x),r)v at 100 km/h. What is the average spee,50ygdzu ve n38 inup)3jgr)xa9)o smd 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 tra-z+n nc1d-cd l4w(ihcap a2(rveling along the x-axis. The graph shn rl4z-(2c -hwd acpnc(a1di+ own 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 q -.hvib9m a6 gj7-. zkfuq7qfmotion of a toy car traveling along the x-axis. The graph shown below is a plot of t6bvkig ua7zf9 -q7hmjqf q.- .he 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 ehg:ouh3/b ap 9v ,p)qmotion of a toy car traveling along the x-axis. The graph shown below is a: vhpp)h oeba9,3qg/u 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 velocity vs. ti/v msmm xxr89rl q8, t*/ bkvo-fa2cj9me of a duck flying due south for the winter. At what pointv8-m 9x ojfklb,mtr* 8sa v/9xrcm2 /q 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 below which shkqade * ,d 4k)v2sukp7d5a5e5lsm3qaows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during the third seco5 354dkkd)d7avs5s q2,ke aqa epum *lnd?


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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 to5s tbnlf7q+: x the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration duqtbfl 7+s n:5xring 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 an object with the por5wb 8g 4lr0o.iaf( busition time graph shown in the diaa fr.4b u05ib(ro lg8wgram 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 questiwzg9i 3 zcr mt0.il1.fon refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original heigfz9r03ti.lg iw1m. czht.
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 tm6u pks ne,z -o,*qki2m a9gr3wcs3 n1he following information. An ideal elastic rubber ,- 9g eo* c63u3nrkaimqk,1 ws2mpznsball 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 traviqh4cbh u r274el 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 repk2hma08 z +jf56ewh gfers 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.
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: oz8ot;jvww-h)(o p 2 rAt $t_0$, 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 scenarg:i7lmic.3l 32bu 8ql6yi jmvio: 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 hcvgcx bxh ,jet ;z4-,0. igj2refers 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 rollrze5t9wueu dcr.u:6 0s down a ramp, across a horizontal table top and off the table edge. Which of the foll0.ze u r 56:r9wduucetowing would best represent a graph 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 distance and tmmse4(;ub ahwi5 8(yxime for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 secon8s y4b w hi(5mm(euax;ds?


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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 for , t1+jkf7xzrys (r.cs+b/llean object that is moving along a straight line. Between wha 7yll .cs kez/( jt,rbsfx+r1+t times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downjgkad-6pye0w2p 7o dq yn88st1g w;2b ward on Earth with an initial speed of 12.0 m/s from0w;wq 8ndag 8jy 6oedts- p2172bykpg a position 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 below represents a toy car starting from res9*qta ye5,h7 pgjwey/t and uniformly accelerating across the floor. Thg ,/j5y*yet pa 9heqw7e time and distance traveled from the start are shown in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram b. 8nxm:jug +t zv; jgho4wx85lelow represents a toy car starting from rest and uniformly accelerating across the floor. The time andz 8ow+v4n5 :.jxjlg;gmtx8 hu 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 r wb u9es/ul0 -kv3(vliepresents a toy car starting from rest and uniformly accelerating across thel/0 e(vk-39uwbls iv u 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 positi7m x)4pf *;u-mcizdh lon of the ball eau-cf4x)ld*mh ;iz7 mp ch 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 uniformlybs+lk4 ok el:/ dgc;hy.el47w accelerating ball. The position of the ball each second is indichoked;wgbllkce.s74 yl: +4 /ated.
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 stranc ha wbvp2, t+3cacw12n1ym.ight line is shown in the graph avh tnw1p2m +2n31cc.,ywc ab 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 fpyij8vzs;mv9r;- ,m a circus clown on a unicycle moving in a straight line is shown i;-v ;ism rpy,98 zjfmvn 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*sx6. ;n*,px hg pcxcj 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 azga*yy0dzy* +5 **wx dachf/f marble on a table top for 10 seconds. For which time interval(s) did the marble have a nffhxz/ cdwy*0dyz *5 a*a+ g*yegative 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 table tok bk ;8g6-uqjip for 10 seconds. For which kj guk6q8;i -btime 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 m+vm p u-e1qfstbqy.hd1cm) 30arble on a table top for 10 seconds. What is the marbles average acceleratice +qpdb 0m- u1v3y f1hq.t)smon 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: d ddqvf f9u9c1r83l *uod*)wsug+n x 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 of (d7 nm(8o7;v qsbhkhc $20.0\;m/s$, 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 motion dwg8hea zg 003/df2toof an object moving with a constaf0a/3zggwd2 e 8dth0 ont 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 flo2n+sk4 erpshrk/-hy ; or for 10 seconds. What is the acceleration of the -2yh hr4enksp/; s+r ktoy 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 t+dla w 61pj/tr.r fl.cc;tna*he motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second ina1/ltj l f. .n;drtpr+w c*a6cterval 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 a2d2rgk(k6rx s cross the floor for 10 seconds. At what times or time s rkg26r(dxk2 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 k1cuu9zp, b 2bgr1+lu 7 ss1o;: membuem/hr in 4.50 s. Which one of the following choices best represents the acceleration of tu 7;:lgrm9b2zbpuue m1s be1u1o +sc,he 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 t7pz /( vnmdj6zime curve shown. Which of the following statements regarding its motion is d mzzj7 v(np6/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 accordi0n jzj9z3,0 11rapycftjrv 8r cqo/y9ng to the velocity versus time curve shown to the right. When does0zjr3891a r /vp9,jcj for c0qzt1 yny 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 x z6h(kfix1j-)hvy n )t6xj6dthat the angle between the velocity and the acceleration of dxhth( j))6v16x6 xnyzk-f ji 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 travel7 ;x mzsff5q1ting toward each other.;1f xs tzmfq75
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 posabj 7qz;b*ba-itive and increasib-;*az jb7bq ang

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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)o . z)w6jotc8yhlwl..6 dys tag(x o8 velocity is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, which one of the following choices id dudg5veu*.5odt)u b 8entif8ut.v du g5d5u beo)*dies quantities 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 moves 6-xc9l x93s 9npb t8rjhvgt;i$3.0\;m$ 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-ti e wuixegcd2 )*v23;qome, $y\;vs\;t$, 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 total tibdni/ aj*d u h3*g-h6ime T in two hi* d*a3gn u ib-6jdh/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. time graph for qw c- jjuj8g,vq;x3k *the motion of a car on a straight track is shown in the diagram. The thi3x ,u-k gqjwj8vq*j;cck 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. time graph for the motion of a car on a straigh2*b: vt:bu e9vg,qfodt track is shown in the diagram. The thick line represents the velocitb:vdb :tev9qo,u f g2*y. 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 any x8 8qcqzml// object given by the position vs. time graph shown. For what time(s) is the speed of the object greatest?y8 /xqm zql/8c


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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 byjy geam,(rkb: e a)83v the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal t,km ey8ebg( j3) v:aaro 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 6w 4ib6: qd2+s vbke lgmq2(lavs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for ts6ei(a+4 26lml qbkwb2vg d: qhat 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 movev7w.df2m06rju ocj ,jo 6sif6dk1lh 7s along a horizontal line with increasing speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a tr -73*z ( tmi nltkxj6mb6g:uhwip 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 relean/*fe7 8*6vf dret fgased 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 is released from rest and reaches t,0e7c yv*kbqshe 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 moving alond)bjg:8xhu n zd 4)fc(b;*ybo g a horizontal axis is shown. What is the total distance tbog(b8 n )djdy 4c*x:u)z;h bfraveled 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 all ot0qkxz/ve/ c+1go o- fbbx(3 cf the listed situations for which there is agozx /cqe 1bc t3xv/0 b(+kfo- 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 poa 5g- 8hyc8vis shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacop8h- v cag8y5ement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity along a line vs. ti5 2x ahslc9,nsvq+ 4wmme is graphed. Which one of the following choicwlnsx, hs 5c4 v2q+am9es 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 t ar8d1 :isqf1dgmp(r6 jm+ ce5o the right on a horizontal track, each with constant acceleration. At an instant of1eirfr5 8 m6 :d1dm+j(ps acqg time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has at,ylo fx4/--zu mp n+bis(ca, 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 timc yj.q s2 1bufext*5,r 9amuo6e shown in the graph, which one of the following choices correctly describes the relationship between the averagec1aq u ,fyr *.eo9xm5b26 ustj 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 desz80bhuvkp /i5kf2vk m bef4v2;1j9m ocribes the instants of time, at which the car 8 2hv95i; vkkpmokb1e4vmb zfuf/j02 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 start from rest x ( anl 7p:phlp8c (4.zdmosc7at the origin and will move along the x-axis. The acceleration vs. tizlm n(7da4xcoh7p8s:p (pc .lme graph for each car is shown. Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of an object moving on a horizontal line is * bv,t3xejvuk 1hju0fv4 / 3dgshown. At what time(s) is the object moving with its greates4fejt/v 0,*jx1 vbgu3h udk3vt 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-bnxqv h wy,(k4xw)w 9*axis following the position vs. time graph provided. During what time interval(s) does the mass have zero acceleraq( w )v*xnw b9hx4,ywktion?


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