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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 a/-:y-h ce;4b zx3yact i df)uct 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 per unidrlv,xim) k o 5+c/8lrt time without reference to a particular direction is c olkrcxr/vi8d l5m, )+alled

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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 speed o: (2 zjotds2xjr m-)bpf 50 m/s and then complepbs2jr: t-(zm o x2jd)tes 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 the constant /rmh2o gc* nag7b06 a+ldar /gvelocity. If it continues, how far will it trave0adar / g/ abh2c7gm n6or+gl*l 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 i bqxc64 ,rfp3xdq7, eis stationary 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. What6c pxifr,e 7dxb3qq,4 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 i.kwjj,x(xv *kt v69oxr(d r3is the averaok3 it9xrj*x j(.r x (kwvv,6dge speed of the motorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling along the aqo4km6(2)eqg6smbj.9o hpe x-axis.9e(64m ba)6e qg2kmq.opojh s The 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 a toy car traveling alonm w.wpq(7zq kvm-: pe3g the x-axis. The graph shown be7 kqw q(mvwpm.-:3pz elow is a 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 moti7ik-zmhwo5 y*on of a toy car traveling along the x-axis. The graph shown below is a7 y*z5khoi-mw 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 south 63f lak)72h,kqajdl n for the winter. At )a 2q l3nk kah7jl6df,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 position and e**;h v mqab sk5(br+thlapsed time *hrqsb *; vkatbm+5h( of a car starting from rest and uniformly accelerating in a straight line. 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 8g c60a(ippfz elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval p 6f g0pczia8(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 velocit44exc*wu51v burgf.b y time graph for an object with the position time graph shown in the diagram at ru4r4w .gxbve1b5 fu*cight?


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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 questionkks 6umw2d2nw( z48mdp m r2:8f d7pxp refer to the following information. An ideal elastic rubber ball is drn8wmds rf82wxd6kz 22(mukm:pd 7p4p opped 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. An ideal elao y ;9yrm/7gn, rfimc4 ,9gbywstic rubber ball is dropped from a height of abn9c ,7;yr fgmirybm4w9y, o/g out 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 * dtf(:ugwv(,baw :mn 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 follmrv* zz 0; 0/yrweg 0dp((ezwzowing 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 scenarkym41flxw:bjb1yft dwe.+ w/ p0e,a-5rnv ; kio: 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 scenario: Atrz/,c -h:n p +g2nn1tb(iref 6zzf8yl $t_0$, 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 scenario5-7nv0zb zrk5 hpfwpck - 4v;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 rolls down a ramp, across a horizontal table top andhnnt/ 13qr w.t off the table edge. Whichqt n. t/n3r1wh 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 relatio(/h *yzrnkw 7 qvr-r y7pm+ki-nship between distance and time for an object th7rrwk hvyr-mn+-* iky qz p(/7at 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 represe(ss: 0l,9fn qur3 uhnants the relationship between distance and time for an obj (n nl03qr:uaf9shu,s ect that is moving along a straight 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 objecttneye1 9 o 1/h/f- c, zwdt5ei)oofq0*sezvj 4 is thrown straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the o fsfcq*ejty o1e)hzwvt,on19 d z04e- ie o5//bject 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 stl 2qqbrr psm7u)e9p5(cs(gm 8arting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are s278rlcgs( m)qpsm(e95 pqu rbhown 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 qqm z,zugq6* h*licay0)hl:ba/- d 7x uniformly accelerating across the floor. The time and distance traveled from the start are shown in th: 0,chz*7 ui )zb6ydx/qaq m lgqlh*-ae 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 represd s(9 yxgo.9 pt -erao a5:zz,r/juoq7ents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in -oxoe/jp :suqa try9r9g.5o(7, zadz 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 xj4nmr0rr4:ql.uog q3/y w6ig qmc8 + ball. The position of the ball each se gmlrmqjnc4yr.u0/x3wo8i 4qr+6 gq: 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 w6zn ht. mm z2i-:bl8 yf +bgvd87ij+oa uniformly accelerating ball. The position of the ball tfz bm+ yg7 vi bwmz8+dlj2hni:o6-8. each 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 cviphl7xz1mj:o4 -l0 a unicycle moving in a straight line is si4-mj1ol7pc:v0h l x zhown 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 clowg 0ebpq/-8v rly0dv1b n on a unicycle moving in a straight line is shown inr1ld0gbvpe8- y0 / qbv 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 vacuu,*n zk xmj*s8xm near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a marble on a tablehpwfl ;u+n):nh qk( a wx2/ix; top for 10 seconds. For whicxwh:x+ h;2 knuq fila w)(;/pnh 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 marble on qkqb;w h 84v+q9 nnug0a table top for 10 seconds. For which time interva0gbn;kqh9q4+q8n uw vl(s) did the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a mavfb r 0/ rnx:gu:dm8h-rble on a table top for 10 seconds. Whath -ux/0mvg8: rfr: bnd is 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 acceleraj3l 3 f4jdmw .cb/j60uuirf/utes 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, thrown straight downward wir-hcd4ihx + w2th 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 representaxek 9e96qx l4.adru:w/itlc07qi(w n * 8pfq the motion of an object moving with a constant speed in a straig a 4i.9rix( w dplw0qlq8e/6e79:c*xnqkauft ht 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 cajmk9 g:fls25mr across the floor for 10 seconds. What islj sg:k f9mm52 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 p1hql +kf3i0 ve;p,uodt(t-pthe motion of a toy car across the floor for 10 seconds. What was the total dis;+v( htoqedfuk,-p0l13p itp placement 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 across the floov2mh3sntspmx ;j,y)5 /tj*wnkyy7 d7r for 10 seconds. At what times or time intets7 d3);,t*yjn/n yhp w2jmxs7 5kmyvrvals 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 km/hr in 4.50 s. Whichfe-yimi x4m; .v a1cj3 one of the fomf4mi-;avix 3j.ey1c llowing 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 v u d*(5svw(bmpurx 0t99vverjg87d9 aersus time curve shown. Which of the following statements regarding its 7 09j(( trgv5ap udm ves 9wxu*d9vrb8motion 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 according to the velocity i fz yz p+7:hodp(jc1)versus time curve shown to the right. When does the car have zero accelerationipyzd(o7cf) jz+ hp1: ?


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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 intervalb z8ig ozkm6m3e)k0uf6f 3c9 m 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 about the tenniszkb6cm miz60e 3 8)fugfo 3mk9 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 1z -ktl2b/r5ztyobq( 150 kilometers apart and traveling toward each other.25qtrbo/ lk-( z1 ztby
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) iyh:ig ;rxq8 positive and incre8;ri)igq x:yhasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average veloegb8*ooq81h.n 4vu ircity 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, whvqlg2s 7- ,7,i 2k tgftl ,eu-u v5y8neomk/svich one of the following choices identifies quantities that must have the same f,q g-,7e7ylv28 vm5u,s-knt2leksotiu v /g 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*i*gaqe sbg8b h0t/7fau;qb g 684tores $3.0\;m$ 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-m 5.zxwt 02vzgtime, $y\;vs\;t$, 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-vdlq9uggl7-g 6gy2 - rdimensional track for total time T in two par-g lq2yugvlgr69 7g -dts.
• 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. ti7cox bc(a9t m3me graph for the motion of a car on a straight track is shown in the diagram. The thick line rep tob 73c(cmxa9resents 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 str9ntva-zh4 ktd ;er;h.aight track is shown in the diagram. The thick line represents the velocity. Azh- etnv ;;t h.ad4kr9ssume 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 ok vjh,g-t.ys csu9jbel.5/w *bject given by the position vs. time graph shown. For what timt.* ,ks9jw./b- cgvu slyh5eje(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 given by the btq )*6x a :)gprwu)gzvelocity vs. time graph shown. For which time(s) is the acceleration wbzxt6q) ) g :ua)r*gpof 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 the acceleration vs. time graph for a fixed qhd6bf+c-c jt ;f3v. ztime interval of an object’s motion, what quantity has been determined for that objectqjd hftbz6cf+v -;. c3?

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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 increasin7 7jso + p8ltc8uazt/jg 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 in0zozgf; - jn.,nzp7h c 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 restth+o(a 5u5g 6ed slb+ xuir*3e and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object isd ae :e2ojh)1su955 lv ,doc7 egsz-yq released 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 gra 1sfgvu-5mzl u7)b8u fph of a particle moving along a horizontal axis is shown. What is the total distance traveled by t bsmf1ufl8z5vug) 7- uhe 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 cho4 / lfvr5vfkjpfvd nz9/ ;/3yxices correctly identifies all of the listed situatvxz53jlnvd /4 kv/f/rfypf;9 ions 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 acceleratiom,)pydbev 8uh1v , 0hsn vs. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what tipmsh),b018 duye ,vvh me(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 along t0 )bbwf;l1e ap8v+b ia line vs. time is graphed. Which one of thebt;0)+b8wl bp1 iefv a 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, each with hsqjm6ezx6 qn/.kfua1 8/hm. constant acceleration. At an instant of time, thqu.msf k/n1.8q a/x6e6 zhjmhe 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 positi18un8i /pjvrv6j cw 2i3n2fcyon $x$, 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 graphuqe90ur n)eg+, which one of the following choices correctly describes the relationship between the average speed of the trn0rg ee)u+9uquck 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 describe5 js/k taed( se;23mils2w9 ja ,4 yyjjg8ht*os the instants of time, at which the car and truck travel *t(ja, a543yjjt j8leime /9 ;ydksswo22hs gwith 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+x69t 16 gp6aalvrwedigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies t9atvl 6e6xd6a+p 1gwrhe 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 hq y 0m gqv)+ *e.)ytgyu2b1uban object moving on a horizontal line is shown. At what time(s) is the ob)gvy.+e*uu) byqqbh ymg0t2 1ject 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 l k(2zm*hdion2.qn v- position vs. time graph provided. Durinz-v d2 im.l nqk(2oh*ng what time interval(s) does the mass have zero acceleration?


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