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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 -ns p,j/g2bp hw9t 0o((pntqnat a 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 k1wazvn6l w8,0k5 de t)k7pjehv9)co per unit time without reference to a particular direct,)c9 6v0etek78dokwwn5azjkv1pl )h ion 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 aro1tgw( 6qzf tysm dm)qn7*ea0, und a circular track at an average speed of 50 m/s and then completes a second lap aw1qnqgzm*sty7(d e 6a )m0 t,ft 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 movo vvt n 2h95wkvqpp,*4gikq5 ue ,w+2les 0.80 m in 1.0 s at the constant velocity. If it continues, how far will itw4 2oqq,nu,vi5kvpv 9wgphtel 5+*2k 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 sdhjl-d7 hr l.(tationary on a 30-kg plank that is sliding at 5.00 m/s to the right across(-7d.rlhlh d j 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 relative to the pond now?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 400 km at 80 km/h and 400 km at 100 km/h. What is6c- w, peve16c+pewwc juun 51txc1t5 the average speed ofx-e5 1wwce c1 c6 tcw+ne5vp 16juu,pt 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 th)e.a. ecb)6uk .n8wx e)j5faedr5tsfe motion of a toy car traveling along the x-axis. T wx6)ef.n bu8)e j.k)5aat .5ersedcf he graph shown 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 motion of naokvft3vjpmi,y8zwnh7 .8 8 gh ,q./a toy car traveling along the x-axis. The graph shown below is a plot of the cyh7gv.3p,8ni ak z.f8mw,qohj /nt v8ar’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 n*cj.zddj ; :rthe motion of a toy car traveling along the x-axis. The graph shown belon .jj;* cdz:drw is a 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. time of a duck flying due soutfmt1 4 kahvq6:hg;d7fbxi(* do8ka*kh for the winter. At 8ak:x 7*h b;mi4*do(kkfd 1afgt6 v qhwhat 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 position tvlu v8i 2*5syand elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity uyl iv2vs* 85tof 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 elz/p a;;u so3q5kc/3w4s8 yguua3fgllapsed time of a car starting from rest zaosw33 u/ug5qkplc8us/;la 4y3 fg; and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the7d:ihd4; 8 plgca a; pp2-kayo velocity time graph for an object with the position time graph shown in the diagram dh8ai;c2 yaplp a -og7k:p d;4at 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 questi r9.fl8cmhr7 av(.i.b8k8+zmdr sv lton refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 memh c8v(l7 r8mr .vbr+aztk f..89is dlters, 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 e)3k y5a2a819b(g ybyjqkohmfollowing information. An ideal elastic rubber ball is dropped from a height of about 2 meter ejm bahqab(8yo2yg93yk15 k)s, 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 traveph:en17,hzgx l 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 refers to the following scenari 7s+cno6d:imkmuc 3 bm:pi*q;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.
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 7rk8u s6ofm88/q arjlthe 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 scenarioi6p bl,21f 1qxnpb*q v: 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 refersc(xj,tsr txxz6w. ;k+ to the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a rleq(3p wb x;3 qxh,91up4n jodamp, across a horizontal table top and off the table edge. Which of the followin; 43 d9eqp x1oqp,nl3xbuhw( jg 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 relatnme:-fw,qm- tionship between distance and time for an object that is moving along a straight line. What is thmtw ,-m- q:nfee 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 2)tmrn7sacxpz vz+-tz7zi3 k* q t:4gand time for an object that is moving along a straight line. Bet qt2zxrztg m-n 7z4z73)pk*tas+:c v iween 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 wit5 /tve3 p1i(aym *5o .iwxykcbh an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the sp5p3kt imaobw vx.cy (i*ey15/ eed 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 restti*cl1ma6 z s7u/ n)iv and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the7icui61/zmvst lna*) 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 sta 1j73txvjjyrruf5(r 6 rting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the di f61xury3rjj7 5tvj(r agram.
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(fubih +dub; oynmx ,44ra /9toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram +/u yd,nf rhua;o4(mxz ib4b9.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ball. The position of the uj (b,mxdo.wny w4 17+ fn7asnball each second is indic+n71nj4w(,sbamd7wufyox .n ated.
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 acceleraou.0ol 9ktn )dting ball. The position of the ball each second is indickln.9d 0) uootated.
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 68mjrv2hpe6 -n;xtk5hmlc5r clown on a unicycle moving in a straight line is showxh r6vpk-6mm82hcrl;n5t j e5n 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 circus clown on a unicycle moving inlx7- u 5b1uia6 9yhjjv a straight line is shown in t-xul9j 1 byavhiu756j he 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 objec36c7lp h2u3osf a8 k5cd ;lqeet falls freely in a vacuum near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motaq8+w*pn y8or ion of a marble on a table top for 10 seconds. For which time intervrnp8q+aowy *8al(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 motif.n90ju 2 zui7s7 x6k hqx0nixon of a marble on a table top for 10 seconds. For which ti2f6jx x. k7in7n9xi0uq0hu zsme 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 dexfj*a ft1 j.c*c ygam 33t42qb 9hy.fmscribes the motion of a marble on a table top for 10 seconds. What isfa34 y13m92ch a tcf .yt*jb.qjg xm*f the marbles average acceleration between t = 3.3 s and t = 3.8 s


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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.20: A car accelerat/hd* bbsf7c1ues uniformly from 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, th:8a3mbx 4ydcyt,ij gmp9/r;ql-6g z grown 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 follo,usgj5 nv61vfb* (vxpabxt) a u8,va6wing graphs could correctly represent the motion of an ov8,unfvj1a5 vvg )ts pxxu(aab*6,b6bject moving with a constant 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 cpsry.m l9c4t 6ar across the floor for 10 seconds. What is the acceleration of th cp.t9 myslr64e 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 descrh , jeqo7)e5evibes the 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 e7 q)eveohj,5interval 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 grt7igl x.bhh4 6aph describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on the toy car b6l7itxh.4 hgbe zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which ommz6,3 anoukuw 690t tne ou9,t0 n6uot mwam3 6kzf the following 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 v spk1e-w xow:5d rmfv o/;s2g *v+ll.welocity versus time curve shown. Which of the following statements regarding itwsfsdr.e:*+ vxkl5v1m -;o2wlwogp/ s 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 alr3dcnzd7 yp q mk3my-1i+ jl6-mtxr9)ong the x-axis according to the velocity versus time curvemr jnl7qkrix)c+m 93py-tm 6d 1d3yz- 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 ou/ muh(g.;bj(onc9jp f time, a tennis ball is moved so that the angle between the velocity and the accemb/j(uhc ;( o9g.njup leration 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 kilometers apart and trauos,rq+k ot f8ad txfj9n /7/)veling toward each other.tofqs/+,)7d jkra9fo uxtn8/
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. Wem/ (s,x vr dnz(rhtb /l/3b6ehen the acceleration is positive and increasing bb /x zldrhs(n/v3te/,em(r6

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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 a/*z,9gx u1onx bd lmy0verage 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 choicr.do 0da:d)es es identifies quantities that must have thd:ra.)d0d eos e 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 movek7 kb iv k;wnuq czjs/8-0jb(2s $3.0\;m$ 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-tigp,9w(: z.yn9xqzyosu ira ar*/ ug 2+ 6okfh8me, $y\;vs\;t$, 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 righhm9 fuyi*7p77w *hb zot along a one-dimensional track for total time T in ofbm9 ui77*hhp*w yz7 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. time graph for the motion of a car kh ezj6u:oz r3mv639b sq5:jb,eon(jon a straight track is shown in the diagram. The thick lijr6 o: bh53:usv3,kj(b 9qnom6 ezjz ene 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 straight tym76rklu wz,d9h i.0lrack is shown in thekh69 ,.7iyrwzmllud0 diagram. 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 than0hwg7/nwuto72w/ b e position vs. time graph shown. For what time(s) wbu w2 wgao0n/ h7t/n7is 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 giv/q)a2rukb0zoo .fr :yen by the velocity vs. time graph shown. For which time(s) is)ko rq/ 0uary.f bo2z: the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under thpm.w q7td-ke -e acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been -e7d.t mq wk-pdetermined 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 alon4 /p49 /rqphh.vexc, d;onpap g 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 tk,53 od03,ox ja pxq)pyq0i sxrip in two parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the grou.)i-h+y nv s ykdwn35znd 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 releas g)ns+0ey-e lged 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 horizont5j84 lw pze8tlal axis is shown. What is the total dis5l4wpjtz8 el 8tance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifies all of the listgv7zq 3s)sqp7 ed situations for which there is a non-zero sqzg3q)s77v p 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. timetqua(u,vy5-. cu,hrh: m vt-m graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum di.trmvh m5 y-,q:,vuc uht(u a-splacement 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 alkl(j9c 5oh.y fong a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of 5ljcyoh 9.( fktime for which the object is moving away from the origin?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to the right on a horizontal track, each with constat rxb o6s*tb0k(j(6wfwfku. 0nt acceleration. At an instant of time, tb tt.*(kw xuo j wkf(r0s60f6bhe 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 posv;n1.fa cbs;ca -i hw2ition $x$, as a function of time $t$, given as $x(t) = -15 - 25t + 10t^2$. Which one of the following choices represents the magnitude of the particle’s acceleration? All quantities are expressed in base SI units.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.41: For the entire time shown in the graph, which one of the following ch q+4vprjvh( mvfq8 l 5+h.(8 np,mzuf(ma x6pcoices correctly describes the relationship between the 8 4. hxf,8mv+ p (j hcua6mmq5+vv(l(prfqnzp 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 choices 3 n)sux6bx k9wbest describes the instants of time, at which the car and truck travx nxs6b39 uwk)el 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 a*co(z m vj9b *w/c led.gg1v:znd will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the rv19jc*l / g.cmzo*ew(d: bz gvelationship 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 li7t (bt8ecjmsprk)- b+ne is shown. At what timemr-8s7)cb+( tj btp ke(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 pohl.7ntj d cx.9sition vs. time graph providedtj 9dnlx..c h7. During what time interval(s) does the mass have zero acceleration?


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