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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 a constant speed around a circular p8ifzfu2a ld9kuhmah g, *ntdb.( xs7-us*7z 0ath 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 dab7h4 4 (owgbj2w zc+kistance per unit time without reference to a particular dir 4b4wg +jwhozka2c7b(ection is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular track at an average sp*1:oxr3trq 0f7kh jcueed of 50 m/s and tf r1hot0uj37*x: kqc rhen completes a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moveqjccl6 x-4: /v9jybd wtu8dm2s 0.80 m in 1.0 s at the constant velocity. If it continues, how far u/myx29 v-jc wd dbc8q4tj6 l: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 30-3;cet*kr;zj9v/zy+a +pn3 bkh7 ab-bng px6okg 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 the plank. What is the speed of xvk39; 6ckn3 hbzpa -b+gnoy z*eb+ap ;j r/t7the 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 n c bq7itc.5y jh+-7coat 100 km/h. What is the average speed of tqith7b + cjo5cn7- c.yhe 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 along the x-an2xe( *p 2y: 1z 7eh9jxk96vgsz l2(irrf dzlzxis. The graph shown be xz2xzizer 1(zl9e2l: h vydg 7rpn(js6 2kf9*low 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 mot515zj m(phb(zdfsg0go+cm *vion of a toy car traveling along the x-axis. The graph shown below is azbfzp5*g( ( j0 c5ovh dmgs+1m 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 moj*uey/ ixqx4n-0c5udtion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direcjnyxdexuu-q 04/ i5c *tion, $v_x$ 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 tro +39 lqca gb1p52ib.oc5nzwhee*(qhe velocity vs. time of a duck flying due south for the2zbiq(bqhoelg13r a+w.* cp5o 59nce winter. 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:, hf gvo2:php below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of h,hop2:f:gpv 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 eel+lv7ud0 3cdiagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 e+ luc37 ldev0second 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 3zo q54rkc ez*iazsj/ eg 0o83with the position *o k0a8 qcjg/zesr5zo43ize3time graph shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the following information. An ideal skblaldr(.t7 r7*zh9 v00 it*m lsi1kelastic rubber ball is dt brs*700( hl9vi7*dl1arizlk .ksmtropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following information. Ak0*otawrqgs+g (q9 g1 n ideal elastic rubber ball is dr g(q0*w1q9tsg+rk ago opped 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 with aketp w 2xjn/uoa7(4 d3 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 scenar.2wu2ki 6xf8c (iioktio: 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 .1jvyo9n(vuna4bp 1x8w1 o2t.tx ge sto the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following svjzb5 5swn nhe ,0-dw*fu u8o-cenario: 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 foll 4g:f d 9bta9qeh-dkxa/soo5(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.
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 horizoe5jwum-w3 .sh k f1 45obl:igdntal table top and off the table edge. Which of the following would 4:li 5dwj-of.w hebk 1m3sg5ubest 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 reld a0ns(v enywx1 wcp,y36 .9frationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the o3wcay 9ns x fwynpd1. 60er,v(bject 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 ;o uagne( 3b5:v5bde n+hh/ef between distance and time for an object that is moving along a straight line. Between what times did the objec du35;veh:n+gbh/fen (a5oe b t 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 downward on Earth with an ini, u 0mq)hl4xxrtial 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 reache)uh4lr,0x mq xs 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 caw3mj**iqvm hj3fx3pu 4-5 x q)iky tz2r starting from rest and uniformly accelerating acrojm4 f )wup2yvki qm3h -3tx*q z3j5*ixss the floor. The 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 below re0*h,esfqv o q/b k5g,ypresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the dia,ge5,*fhbqv / s k0qyogram.
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 x3ff 6wd7k3yttoy car starting from rest and uniformly accelerating across the floor. The time and distance traveled fx k3t7wyfd3 6from 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 yrves:k v.se)5md7.y8 ax0bmthe ball each sera0s 8)7b:vey ms5.vydxk em.cond 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 uniformly accelerating ball. The position of the cjz zpey/zd5 /x 69:n(cb;pypball each second p9;(zcz /6xb5:ze y pnp cy/djis indicated.
Which of the following is closest to the acceleration of the ball?


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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus clown on a uniu*u,he1dp *iqg2r*t+7h istucycle moving in a straight line is shown in rds *u e2h+itq**ht1,g7 uiupthe graph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a ci6qigpw;0btu r- ow,d9 jj3e3ircus clown on a unicycle moving in a straight line is shown in the grjg 3rdb;- q6uw3i ,o90wp itjeaph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacuum near the surface69m7 h wvyuce1 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 f v:h2(6snubp7w du;osm ;l)mtor 10 seconds. For which time interval(s) did the m:sdnhlbum ;72ovu6p )tsw;(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 descrim0h u* nho,3km;hzvv5bes the motion of a marble on a table top for 10 seconds. For which timh;*u oz3 ,v0 mkh5nhvme 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 accompanyinih5 f0mh2q f7z. m,om w,9rlhng graph describes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration fh,zmmr 2.mnl,qo w7h 0hif5 9between 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 f12 t4 bls gfe8g(stztysy-3:pc+qy *o rom rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with a speed2vcx( /c0z )vivg+ eudup0i6l 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 fo.2crx5.rx7ffzn wj + df5:acwllowing graphs could correctly represent the motion of an object moving with a constantxf.cncz:f 7.5ad w+5xfr2rwj 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 59+k*r/wk n- ejzoh2rqn4 tiumotion of a toy car across the floor for 1nkwrko -h9nu5z4t *ji+2 qre/ 0 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 motion of a toy car across the 6:oo px;6f ufcfloor for 10 secondsox;co6 :up6ff . 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 accompanyihn/r2ts7xk6, jcyp ky 0n(o )u8ds8qlng graph describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals mu or t(yc8u2p y0d/nxhnsqk8j, )l ks76st 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 eh,s9tkb s6, xvko-p/ uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleratto6pe/skbx,v sh -k 9,ion 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. *a mv w,9g,;z+euvenmWhich of the following statements regaw m9u ,;*zname+, vevgrding 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 movesf6r7ob.y vsa)6/w oqj along the x-axis according to the velocity versus time curve shown to the right. When does the car have zero ac6 sv76/)bao y.ojqrfwceleration?


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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 * n5 :m4pobsjcball is moved so that the angle between the velocity and the n:om*csj b5 4pacceleration 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 kilomety*vkjss0ge293ho:x91a c ro ners apart and traveling toward each other.9xcye: 3so 21 avornjgh*ks 90
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 accelerh6qk77vx,i ag:pw 8q; ha9 bpqation is positive and increasing:haq69x8a;kw7 p hgv bqip q,7

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitionm y*tq guh.:n- of average 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 ingec. t rj ;p,2x6bpxx, two dimensions, which one of the following choices identifies quantities that mugcp j;x .,ex2b6p, trxst 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 mov 4e,s i: l2gjqvf)rm4aes $3.0\;m$ 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-t-pa z+ 3jze9cbime, $y\;vs\;t$, 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 ti2-lec a0i5up+;mg eu g3hvzz. me T in t5uucg mpeh .i;zae3g- +vz2 0lwo 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 ar (9i1d rf,fjgraph for the motion of a car on a straight track is s1rj9f(ria ,fd hown in the diagram. The thick 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 t* s88k.hfckgr i3 jr 4h(5u0p0ovuzz d13xfifor the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that turt. d 4izk ujf0rp 0x8*(ofhcsizkh318 vg 35he 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 b3crzzs 4 s0u;7j kq(uvy the position vs. time graph shown. For what time(s) is the speed of the object greatszcvsk 0uqrz;j47u 3(est?


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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 moxort u9r 8d+2jtion of an object given by the velocity vs. time graph shown. For which time(s) is the acceleration of the objr+o 2xu8dtj 9rect 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 tx y*rqecbkb 983 hj5/area under the acceleration vs. time graph for a fixed time interval of a r8y5jbt9qkx*b ech3 /n object’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 lineuqwzve 03qx.*z8f i2q 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 trip in two ph c *7*q60 eppgkrj1nsarts:
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 5d, x/z7itr79 u;pn0rt q kvbtreaches 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 releasedv fhiufn3g:rj 8/1u5z*jq:s+fh fbh 3 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 moving along a o:b20mlvw76 n o*qi;;wmat eqhorizontal axis is shownt2:w ;q io6ove7n0l wmbqa* m;. What is 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 corr759eb-zo3y b fd1 vaz.:tlzk aectly identifies all of the listed 39 5.1ezv ldb7zokyabz: ft a-situations 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 i0x)dts av)d7fs shown. The object starts from rest xvs 7da)tdf 0)at time t=0 s. At what time(s) does the 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 orio3db(5iyf7 hq*vv vl0gin and its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper intervvf vo 53(hl*vydq07ibal(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 ovg yq.ut/jnq )gwtk3e, bn2+5 n a horizontal track, each with constant acceler t,35 g2nutknvbqqewg j.y/)+ ation. At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a positio ak0sr z9d/nn6n $x$, 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 t6xj 2dv j*ceq-ime shown in the graph, which one of the following choices correctly describes the relationshid-cv2j6 jex* qp 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 choicj ngi.skm1 :/xes best describes the instants of time, at which the car and t/xnm 1s:ki j.gruck 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 at the or)2 gi: hv9 abobpdq* u811abewigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices corre1ivae92gbq1u h:d w 8 ob)bap*ctly 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 st+ h1s7cgg io ec(72je8d6uixhown. At what c dx is+7ge ce6178uo(itg2hj time(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 follopbsz ojb- 2f;x ox()-9zcj*czwing the position vs. time graph provided. During what time interval(s) does the mass have zero accez z2oc)x-j*bcfjb(;op9s- x zleration?


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