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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 circularw;ec+gn(g-pj2*.sc q sa yyh6 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 tozg.w7np; iu wofndtr.+)q-1s a particular di-ptd rn;u1 zowqsg.fw i.)+7nrection 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 complet0h7f,vgb 2lqvcw 6+ttes one lap around a circular track at an average speed of qgv wtc2 6 h+7,vtf0lb50 m/s and then 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 moves 0.80 m in 1.0 s at th+g 6swtku(y1-yt)tboh w/ (q/plq 3mxe constant velocity. If it continues, how far will it travel wktl+hsb(w/utqqp6 o/tg)m y-(y3 1x 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-kglv7u 5ip:sy*d 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. p:il 75v suyd*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 if-l hx + n;pemp(()tnat 100 km/h. What is the average speed of th ftx)n(pm(i el pn-+;he 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 alonu o sog).k*z)s.fx) pcg the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,p g zsxc.ks )f.)ouo)* $v_x$ 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 the x-akt7b r,g-( 98vjsv l9y ebiqo8xis. The graph shown below is a plot of the car’soj(l8t-s,v i987gqyrk 9veb b 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 mo(u oq(( r0vv tfw(on-otion of a toy car traveling along the x-axis. The graph shown below is a plot of the ((no ov-f( (otv r0uwqcar’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. time of aip*p;xe 2-/lsphv)kb a3 *j pi duck flying due south for the winter. At what point did th-p pp3;xpb*h slk/vjiie a)2*e 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 sz2cklw lv )+w 9lh/2xzhows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight lin)x+l/ czkz9lww2hv 2l e. 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 position and el*chk8xed:8ii lf h:8y;j4w syapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration durinwhkes:8f8 i;jh: 4yy8ilcd* xg 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 tdpj zqk v20vb70 )xs:with the position time graph shown in q2s)v0j:0vdb p t7 zxkthe 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 qu :useh1dmx9(,iyf pdrn54+z zestion refer to the following information. An ideal elastic rubber ball is dropped fro ,xz(si fd zm+1ehyd4p n95ur:m 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. An ideal elast 9na7 n.1xcjnsic rubber bxs9n.j 7cn n1aall 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 with a le quuc72zn3w, 4xa+wgp; do fpk b.to9g*5 7yspeed 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 followfq34 e6eh g j;cyruol4 *49sj21wmpexing 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: x6 +ly qo8s1cnAt $t_0$, 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 sck qpau7+37gw *+wsybbenario: 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 scenwlmf 369nccihp (sn,wy23t a+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.
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 zk +bo, r.okf ;.jq37vwitwd y9*ntt)a horizontal table top and off the table edge. W;tow v.kwioqj.*9fk+bd,rt 7) y3tnzhich of the following 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 time for303frqj6y jdu an object th3y ur 60fd3jqjat is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the relationship between distance and time for an oun 6):qlmsbq l0:to d;bject that is moving along a straight line. Between):o 0lnus:mlbtd;qq 6 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 init-u,2f; cerlu ,uf vb(iial speed of 12.0 m/s from a position 10.0 m above the ground. Ignlu-bf e;iv,f,u( cr2uoring 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 bhbt.gu-jl1 na*f ar3+elow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the dignu* j 1+fhrab.ta-l 3agram.
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 yoy gb6 1 :/lxs3wbn+mopyl/2and uniformly acceleratxl6 lm/bo+3yw/gsp2oy 1yb:n ing across the floor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy ca ;c,q i1 4c i9ovttf(uu(ma*yxr starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in t t u,a (u(ovi4c1yx9*cqf i;mthe 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 posimwfzl55nt h* 0tion of the ball e0m 5zft*nlh5w ach 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 uniformly accelerating ball. The b fed)b :2ugk8nl-2i2jds;cu position of the ball each second is indik8beu i djd g2)-2; ul2nsc:bfcated.
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 untl wwe , wt6qthzs219+icycle moving in a straight line is showqt2 zsw+tw h1 ,6tel9wn in 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 zc*goayp90bn3k(o jjah14 6l circus clown on a unicycle moving in a straight line is shown bo3z p yl0h9jgaa6n*1k (o4 cjin 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 in a vacuum near the surgz55d5o9 ivw 3+tixfsface 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*x ma*s okl;w3 motion of a marble on a table top for 10 seconds. Fos 3xmloak*; w*r which time interval(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 describes the motion of a vf)+ 4/rk lxngppo (4mmarble on a table top for 10 seconds. For which time interval(s) did the marble have a povogn4f m+/4(xpr pk) lsitive 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 moti0ra he)9jhv lx(),6qz7uz* ppadbp4 u on of a marble on a table top for 10 seconds. What is the marbles average accel0u4xvzldhj 6 u7rp*p(b,e)q9 )h pza aeration 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 zz,33j/ wlf1d c3a(dj wexy,za 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, thm8xbdv yb3 l gw0**1g8*d krmorown straight downward with a speed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the following graphs could correctly represent the motion o(cupj8lxm5tcyjm ;um;- msj8 +ren9, f an object moving with a con-clm;j,p +nmusy(mxectu8 8rjmj ;59 stant 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 ac(w/zj naa2 i ieq(*a( 2w5zj3/rkzkqcross the floor for 10 seconds. Whz (ne(qa/(*iz/ack5 kwrqz3j ai22jwat 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 thec h a 7/(;eqhfpa-kboxk ha;08 floor for 10 seconds. What was theab(o;c fx- aq8h;/hp7he 0kka total displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the motion of a toy car acrd(af.-e av2ycoss the floor for 10 seconds. At what times or time intevy-.fcd(aa 2 ervals 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 kvy 5x)d qke(w5 )ouo0om/hr in 4.50 s. Which one of the following choices best represents the acceleration of the cawk y(u0o5) xodo e5vq)r?

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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 shoh,c t6 b uga+hb.4hlrbrx1*o+wn. Which of the following statemx habh,.urt+bcl*g +ob1h46rents 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 ai5ey,3o1c qs 8(sz cp m-aq+qvlong the x-axis according to the velocity versus time cu +8ccoq s5(q-apzmy3, v1sieqrve shown to the right. When does 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 ten 6/a5 xt3d6pkrlo43qm0w5pm0 zjbk hu nis 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 about the tennis ball duroal xbkthj0z dp6q mu45 m3wp5k/603ring 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 automobilesqj9 q*tovky6i7ushva/ipd9 ( a 3b:0c are 150 kilometers apart and traveling toward each other.ia jvpvth 9d70 /6(bao:*9qyi cksq3u
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 poh 6bugn:*t ,dbsitive and incread, nh*gt:ubb6sing

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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 )9 mroqc* o9koaverage 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 d e4(hsd dr5et9nyiklp25d 68j imensions, which one of the following choices identifies quantities that must have the dke p d d9ih82sryet556 n(4jlsame 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 o3g.xen cun.7 $3.0\;m$ 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-ti4ri 8d)aa0jufjr 6p3u9 3 5a lchas+ydme, $y\;vs\;t$, 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 forhx9 :/5hf yfbnr8uy:u total time T inr9:y/f8 fy:nu bh5uxh two 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. t+y6xj( hi dcu12n:fxo8hr .jdime graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car jrco6n . hxfj (h+dyd:2 x8iu1starts 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./kd;v3 .gn*b4vxsxkdq,bw/ up0hx-q ;egp8 g time graph for the motion of a car on a straight track is shown in the diagram.qgdb8,v ghxe;v x s u4bqkk3 p.nd- /g/x;wp*0 The thick line represents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the position vs. time gra4zsh1lwhw4x *z ay ;b/ph show lhbh;4 wxy1w/as*z4zn. 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 qjn 2k.vt xs*y x1 4ozjc5.ypyx(+: foan object given by the velocity vs. time graph shown. For w.qy sxyxo y4f(5k: 2+1jcjpxo*zn. tvhich 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 m 6+b)ghf.t8lh pbwz 2area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined fo bg. b8hlpzwt)2h+6mfr 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 incr kzl8fo7h;s;lzmwi38 easing 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 part vip49ckmzb,(/b2rxb s:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the ground )6t/acs6ga oy 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 rele2r.el;g2zcm5ca ucx ( ased 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 alonghz+9bgxnb 3 4m a horizontal axis is shown. What is the total distance traveled by the particle from +zb94 hbxm3gnt=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 identifie *q ih: rjut)oylfo8)1x+jm c3s all of the listed situations for which j3 lo)u*qt :yr81ifhcoxm+ j)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 is sho/ycb0 zjuf q)6wn. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displaczcf) yju0 /q6bement 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 yk rt( /eds1q fq715g;ri x5pjb/kv)qvs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving away eq yf5q)5p 7isq vk/g( jb/1krrd;tx1from 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 lwod6ne 3tot,92,pf iq hfu30on a horizontal track, each with constant acceleration. At 2optf396e,tl id, ho 3wfqn u0an 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 7r kdd(9f6 cu/uuuf)oa 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 t6cdt 3 ) :e-elhtuwde)ime shown in the graph, which one of the following choices correctly describes the relationship between the avw e3)d:hl6)d-etu e cterage 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 describes the instants of t:+ fsifi+mda5 gc*0io-as k(yime, at which the a:ci+siyi-fksa+5*df(o 0m g car and truck travel with the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rest at the origin and will move al4xi *e : vc0j0qb2nva+ oewwas,sr62wong the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for:n 6ass24iae+20b 0qwecow v ,xvw*jr 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 vsn jz f-1lw 5lab/3ralme n(r(;. time graph of an object moving on a horizontal line is shown. At rn/l b5 r(-n;3ljef mw1lzaa( what 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 following the position v lpnp.ohyt(9 2s1wer vq3g45vs. time graph provided. During what time interval(s) does the mass v2yo esp qg 134vtn5hw.p(9rlhave zero acceleration?


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