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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 path of radius r9kn8.ezb) la7- t 6eneckn 0h$R$, 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 pejw(3w: rh8qfsd ,7 jde0yi: ipr unit time without reference to a particular directi (0riyi:dpwh:3 j,f7jdsq8w eon 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 arou6m; ek7 f f/qavie 0aiezeq)/)nd a circular track at an average speed of 50 m/s and then completes a second lfq0a /z e7ef) qieem 6a;)ki/vap 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 in 1.0 s at the constant si/v. 3pk*8fupay yn* velocity. If it continues, n *y i/3sp*pkv.yafu8 how far will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationa h;4xq8hz1n:/opi puiry on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank 1n ioxu/4 i h8pp;zq:hrelative 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 is th ivcukco 3i7u )udcz+ ;/dws38e average speed of the motorist d;z u 38+ ku/io suiccv3)7dwcon 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 referer5nho, k77/(aklfu cs to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of th ,l5orakn/ ukc e7(h7fe 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 traveling along t0k+ijr(fy* zoj g-/ss 25 w.8utrlhodhe x-axis. The graph shown below is a plot of the car’s velocity in the x r-yfhw 0 8(j5t/rdjss o*gkio2u+ l. zdirection, $v_x$ 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 trpkf 4t/ds+6 y8r+nq z,otsf 1 r3byur)aveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction /btfy+3o4,dn1u8z s +yrqrkpt ) rfs6, $v_x$ 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 velocityogzseip+0 n -j77er ;t vs. time of a duck flying due south for the winter. z7o;enj-tsp+eg70 i r 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 below which shows the pgzwx8e 7 5aupdoft,z-m7/m6xgg9 jk+osition and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the pae97 x x8w5gz-fudzk j 7om,6mg/gt+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 diagrapx d zmp4x8pe.f;xj+7m 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 p4 z p8+x ejdfp.;mx7xthe 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 obh*qso. h6p m8wf)d7hpject with the position time graph shown in theqfh)p ms h86o*hd p7w. 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. jc)85yf sh 5.g hb;mou te8ad)An ideal elastic rubber ball is dropped from dc y5;t)u )8bajemhfo5 gs h8.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 followikc,nosc 8b.,s ng information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original heigkobs8c ,,sn .cht.
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 w yc+ +egepbc/1ith 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 fo i5e./j jd hiv2:*c;iwbf9 oymllowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers to the following scenario: At xgq e.5seb/r 2$t_0$, 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 refcpzj( tq+ q5 ou,9sr:xn.;gzzers 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.
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 following scenari6e.qi; wb vlq98fbo,ehh f0.y o: 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 ro5)u7xxnc8zer : ep ,xzlls down a ramp, across a horizontal table top and off the table edge. Which of the following would best represent a graph of the m8,x 7ucxr z)e:x npe5zagnitude 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 th gp78- m( zf;a81fjsgqrb)r mze relationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the m)zagj8r; fbg pr-sz8fmq 1(7object 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 for an d: tz5xodtn*1*wj;kr object that is moving along a straigho1ndkr* d:5xwzt*j ;tt line. Between 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 thrown straight downward on Earth with an initial speed +c 8ooiu72lps of 12.0 m/s from a position 10.0 m above7olispoc u82+ 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 rest and uni, hqukgv20e) iformly accelerating across the floor. The time gieh,2)u kv 0qand 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 represents a toy car starting from rest and uvlscyb: xkh 5;oz:)*s niformly accelerating across the floor. The time and distance traveled from t:hcvy:s5kb* o) xzl;she 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 :z-x6qt8t+bsu0d q1 pb y(oai toy car starting from rest and uniformly accelerating acros1+t sbib o8txady0 :6qqu-( pzs the 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 3ze xq4yew8c 4a .0jvuposition of the ball each second ievyzw xa4048quc3j e .s 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 acceleratincnvlqcqpx9q .erwy.0fx1 ( 38g ball. The position of the ball ea 9r q0exn 1xqqf8wlpy c(..3vcch second is 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 unicycle moving in a straight lin+ ;-jz l2cwdds+ /,t*uac()qqpgul n.7ixqbd e is shown .d2cpb;gxw7qs*-dqilda(+lqcu+/ n j,) t uzin the 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 circus clown on a +a9h dfejt6yr9myt*l,t m82j unicycle moving in a straight line is shown in the gr*r6j jetm8ya+ytmdh 9l 2, 9ftaph 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 surface of the eao (k1ocq7wu-2a,vev arth

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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 pb n ion1n t8qx4/ic8,on a table top for 10 seconds. For which time interval(s) did the marblqtionx8/pi 8 b4 ncn1,e 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 describes the motion of a mazlgjgj:q g *61rble on a table top for 10 seconds. For which tim1gz: jl*6gq jge 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 thq;2f mtvwra1tx h,;ifmba9-/ e motion of a marble on a table top for 10 seconds. What is the marbles average acceleratxwfar;fh-qt m/va ; 21,mb9ition 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 t2t5bs twk.kt 3e .u).6thcbstdgk5(h ime 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 downwe di4za(v x24xard 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 correctly re 69, qkfpiwvx;tyw3.zpresent the motion of an object moving with a constant speed i t3w ;pqvix6,f9wy .zkn 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 descri+)t0jii+z kp o akzff1. cw02gbes the motion of a toy car across the floor for 10 seconds. What is the accel .g1j kwiffpzk0a2i)t+ocz 0+eration 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 toyl4+we o .ztd;c car across the floor for 10 seconds. What was the total d; 4.zeldtcwo+isplacement 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 mod+ubqkfptn/yr0 n673tion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on tn+qpb 0tn76ufk /yr 3dhe 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 inki-xk;jgk /m;;c/guzh )hg2 s 4.50 s. Which one of the foligx hu-s/2;; ;mg ck/hjkkgz )lowing choices 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 time curve shoq36qackt+a:*q3;8 y2wyfk jvaw hn5 own. Which of the following statements reg6w qy3qk8;oq5naya*vckj tha:+2f3warding 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 accordiwn4ksu7 1, *e7 pyqmitng to the velocity versus time curve shown to the right. When doespm uiqe7ty1k , w4ns7* 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 intervafpiq:y8qz eng02 xg-9l of time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true z0pqy-ggq2x fi:98n e 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 aa6wbw +gn/ ;,l f:evrxpart and traveling toward each other.vef/6; w +xw:r lg,ban
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.m4 +uw/ kse 7jfmwfp w4x17b;.bv6j xp When the acceleration is positive and increasip7/6 pwfwv.7 ;smejj4bbx+ x4m w kfu1ng

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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 avereemhaw 4vx28cm2qc d+q.l0t4+4n irzage 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, whiyw rrp)rwnj./5esueo- q( 1d4ch one of the following choices identifiqywjeu-4 sn15 op)(./ erwrdres 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 i k9rxechz1 1tk/;x+1tgspm/ $3.0\;m$ 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-tih8poes2yd j+/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 )rcg2hjg8wl g0 .,jb-8pb fmmalong a one-dimensional track for total time T in two partsbjh-pwgbrggml c8,)mfj 2 .80.
• 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 the motion bppe. 4r i:4iq)5zdhj 6f eqx6of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that tr 6 hbe4p. 4d iifq5:j)xp6qzehe 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. timerqa 6-i q ;)ztup9vuu3 graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Asuq- a; tru6piq3uzv)9sume 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 b l1-8r l.l sqjd(zqr+.5nnkd iy the position vs. time graph shown kdr+lq l- . zjnl(81qsnd5.ri. For what time(s) is the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object give67 amjv+t9 f9q7pprcqn by the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal to 0? m6qa9p fc9pjv+7 7tr q


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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. timey yqqhk-g*.(y graph for a fixed time interval of an objec* (.qhy qgy-kyt’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 increasing a8nj,n oq9) gbspeed.
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 ikxtq3l9z6 kw 7n 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 tim-li+cjxw00c ha tw0s8: -manle 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 the g7j 3ynm6cr:q w7xg0 rground 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 horizoneax16fy1y f7 (w5f+.v jblohhtal axis is shown. What is the total distance traveled by the particle from t6ljo w v71fa x5yfe.fhhy+b1( =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 allnadoe3/0tw8meo. hrats19 ) c of the listed situations for which ther/s t wdtr1e)ac.9eh3m oan0o8e 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 eoi,5z4*mqo o3c-ywb a line is shown. The object starts from rest at time t=3o-ozw4moyce ,5 qib *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 origin and its velocity a1l 6m9fp-+ vbb-skvj l dj45rxgwpg6-long a line vs. time is graphed. Whi bgbv6rlg j 65-4d1vlx-f9-kmppj+wsch one of the following choices best gives the proper interval(s) of time for which the object is moving away from the origin?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to the right on a horizontal track, eao)wpljj9dh8 n:qt6 x x,ef*t,ch with constant acceleration. At an instant of time, the information about the cars is shown:p, ,ot:fxt *w6 jxn9 jq8h)del
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 positioj61 m wlxlv(v3 f:o+xp6 4pl8twnjc b+n $x$, 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, whic, xo1hm ol+cp.h one of the following choices correctly describes,+o po .hxmlc1 the relationship 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 choicescy8z t/ jew)3u best describes the instants of time, at which the car and truck travel with the same sputjy3)c z/e 8weed?

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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 startlwc(dd7,uwb(g lw s9 8k(hb6j from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choic ( dbkwl6u8,d7 wjgl(9 whbc(ses 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 objectkn ;g ug0. ugud);:(urv*4gdo0wwat c moving on a horizontal line is shown. At what time(s) is the object moving with its greatest speed0 ugcng)g.*vd ;w;4wu:g ouura(0 kdt ?


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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. time graph prov46:;)po -1bmav, hq2ol d feu9hztfdcided. During what );o4 2zc6-q,obt upefafvh dh9m: l1dtime interval(s) does the mass have zero acceleration?


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