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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 radiufloi*4+( tpug 5iwl j9yat-u /s $R$, 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 pl(:be a o ;efu8cp)y;time without reference to a particular directiopeycbo(l8p u )f;; ae:n 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 onm6y3k/ )ptfxd*dt e i4e lap around a circular track at an average speed of 50 m/s and then comple46*xkf)d/e3mtpyt d ites 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.v ,a db*41uthlcu-cxxfu 9v 0.80 m in 1.0 s at the constant velocity. If it continues, how far will it tra,du b.v-9xt4hlacf0 x1v *uu cvel 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 sm-ajg2.ez gv ex82jt3tationary on a 30-kg plank that is sliding at 5.00 m/s to the rj 2av8. 3eezjg2gt x-might 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 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 o*uybab 224u d80 km/h and 400 km at 100 km/h. What is the average speed of the motorist on th *yuudb22a4obis trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling along the x-axi-x )hbjbo3x*wa1 ,wcss. Ta1wb -,j)s w3*xoxhcbhe 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 lcmw:r-d*,6 j wth2/ 8bqy/b xhb7gurtraveling along the x-axis. The graph shown below is a plt* ubbwxmq-8 byhcj ,7d:grr2/h w/l6 ot 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 nbx/w;r;3 +mqju z cy1refers to the motion of a toy car traveling along the x-axis. The graph shown below3m;bz curj+1q ;yw/xn 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. timk:dc) +; ifxcqub+c.ng c:xg+ e of a duck flying due south for the winter. At what point did the duck stop its forwaqd+xg. )c : xg:kn+fc ciucb+;rd 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 ba-m/0upvk5a0 p8s ;0zitdw p jelow which shows the position and elapsed time of a car start maj0szppv 5pd0u0tw; i-/k8aing 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 question7t:f )ukqrkvkvw /g +- refer to the diagram below which shows the position and elapsed time of a car starting from rest and+ fkv7/:qv urgk)w-tk 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 the velocity time graph for an object *j7ygmrtayb/ su./:sp; h0qowith the position time graph shown in the dio.qys/ syj/t:0pmuab * g 7hr;agram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the following information. An ideal cwxmrux-2c 1vt7j 98c nz-i0h elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to itsrx8t-9xuv7 hc -jcw 2n10ic mz 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 el qq, g1cx8opo*kbp)e8astic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original kcbqpx1 p)*, q8go8oe 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 j b .3 utgpsnwz1ul-a,d0mu2 :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 scenario: Atu/fzu8(fn*g u $t_0$, 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 scen 13x hv2wa0q .dshbd5zario: 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: Atmb he/,feb+s6 $t_0$, 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 followi8 o7oum:- jqspng scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a horizontac ;m: or5ir b+59j.rd,eyvxv cl table top and off the table edge. Which of ,.mveix yvor+ d:5;cr 5j9r bcthe 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 l5ed(s yzl1.kbetween distance and time for an object that is moving along a straight line. What is the instantaneous speed of t15kzdy es(. llhe 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 relatiof1 5iii2mr a8sv -vt)unship between distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero 5a8vsvr i -21f mtui)iacceleration?


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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 strai9rzbni3 hfc0wt0;9fddd 5m l 0ght 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 object when it iw;ch5mzd 0t0 9fldr3nd09fbreaches 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 uniformlyw wek *r:fb,mb3)vke: accelerating across the floor. The time wfv ,krwk bm:)e: b3e*and distance traveled from the start are shown in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram below represents a toy car starting from rest and un+ okfpt .ml(-l q8z7gqb: ik+diformly accelerating across the floor. The time and distance traveled from the start are shown int mp.dlbqkl+z+7g- f:q( 8iok 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 belowfe71kmja09wl represents a toy car starting from rest and uniformly accelerating across the floor. The time j0 mfwke19 la7and 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 position o(siec1q,mrb4q *es /hf the ball each secone(s,c4bi q*/e mqhs1r d 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 positionc *ya/mxucx/g*fp 8g t2mz 6m5 of the ball each second is indicate x/2*y z6ccgmm5t*xupaf/ mg8d.
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 dh)aa v8wwc (u 7 sjm2i2h0u(ca circus clown on a unicycle moving in a straight line is shown in the graph belw 28 j(hacum02)duswcvi (7 ahow.
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 in a straighr)rube. hp++h t line is shown iu+)b rrh+.p ehn 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 objec(+ a;8g literz ,oce.dt 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 kaw5h0l s nrz( t.j 4.ux2pw1x8upm :hthe motion of a marble on a table top for 10 seconds. For which time interval(s) did th 4k sx.8hr1hau jwu5.w:0 tp2xlnzp(me 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 zugo4lkk .x*3 a marble on a table top for 10 seconds. For which time intu4 .xg3 lkk*zoerval(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 )fjg:on s/cy 1graph describes the motion of a marble on a table top for 10 seconds. What is the go cjys)n:1 f/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 accelerates unifo jl2e1 b:x-yizrmly 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, throwe(o ve9x0x 0j3 5nly h+0septmuaj 6a:n 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 followinh9e71jj t d:pvkw5g 4ag1y(fwg graphs could correctly represent the motion of an object moving with a consta491wd e kh:vwy(pgaj5ft j7 g1nt 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 accompanyiukl1ic4ig-z : ng graph describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy gc4iz:1lk- iucar 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 deso+ kd *-sx7rh/ y7ljqg 2yqhn7cribes the motion of a toy car across the floor for 10 seconds. What wq dn hq2hsyk*o 7l g7xy-7+/rjas the total displacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the motion of a toy car */t.ivy zk:rvacross the floor for 10 seconds. At what times or time intervals must the net force on the toy car be z *vvz:.yit/k rero?


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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 accelerat.rqywg4j -p;b5z/btuw2hh/,5 jmeev es uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represe 5-etvbrby./h,;5u2 4/j hmpe qgwjwz nts 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 5e6 /iyjgzuum0i 3c:f time curve shown. Which of the following statements regarding its motion is N03ij:/i zgyc5mefu 6uOT 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 dp9 k:jfr5(9 am(zg/ /dsrabdthe x-axis according to the velocity versus time curve shown to the right. When does the car have zero accelerbjf/sp5 dd a(d9z g :am/r(9kration?


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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 +od 6vb-c0xfh time, a tennis ball is moved so that the angle between the velocity and the acceleration of the balv-xbo+6 c0h dfl 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 rxr1 o-xi6 z5; 9hlvit)e7vupapart and traveling toward each other.oz p7xuviv9 i16he;)5r rt-lx
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 acceleratif em,;1 (mgv)v ro2eclon is positive and increeol;(vrvmm1ef ,c2g )asing

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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 velocity ux/)s+p5 cb epis

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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 one84uz3:z0dtpi(xizq3si o5 vp2bguc . of the following choices identifies quantities that must have the v3 isg.iui8z:dupo0(c 53tp2q4 z bxzsame 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; wgo24hibe3g $3.0\;m$ 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-time,6 nl:sb)d v*poa6ikl -6u-xcm $y\;vs\;t$, graph for the motion of an object is shown. What would be a reasonable equation for the acceleration that would account for this motion?


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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.31: A car moves to the right along a one-dimensional track for total j rd4sn1+hg6mdnd*ze, 6 s5ehtime T in two g zh1r6hj ,dd5d6+n ee ssn*4mparts.
• 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 c vxzl. k2bsra86)/ckfor the motion of a car on a straight track is shown in the dsk )cz28lax c/rvk6.biagram. The thick line represents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. tipvcam.p8owf e +- l *3,vj3dejme 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 star*.d,lj c e8p 3aej3o-pwvfvm+ts 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 4g1r hk di/b6i)j2d )bby.-jir yxzy;given by the position vs. time graph shown. For what time(s) is the speed of the objeciiy;dzg1 )jj ry6k2x/y.bhribb 4 )-dt 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 velocii v/h f::,nbl(f00akza(ow ujty vs. time graph shown. For which time(s) is the acceleration of the object equaokna:j(zfv:fwb( /h liu0a ,0l 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 fix7(k/.n n7lepwy hb(oped time interval of an object’s motion, n /7.7 (ppneyl (bwhokwhat 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 w.d.gbe.f bup 6jbv) r*f4ua /kith increasing speed.
choices could represent the signs of the velocity and of the acceleration for the object to achieve this motion?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.14: A car makes a trip in two pszwt.a,w,n 14d wp rfc.j0 .qfarts:
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 ti7q6f powwo j y1dankp(: u51,ome 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 real 2hwyfv6 ,ikn/bx6 cc y523h 6bb.xhvches 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. timx(fz u3::akpe(t( y1-ifcaeke graph of a particle moving along a horizontal axis is shown. What is the total distance traveled bxi :( cp(:a1k efu-eazt(y3fky 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 follqlfw(t: +pe3v g/p-ir3o.ydoowing choices correctly identifies all of the listed situations for whichvo.i+3( /f-elp p oq td3gry:w 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 f..r3l rir3vdvaicyc0+0cz .adcw3:object moving along a line is shown. The object stf lii00v. 3ywcczrr : a3cc+v3r.a.ddarts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its-llg to./zjd6 velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for z. tjlo6d -gl/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 mlzmm/. p7oz-l oving to the right on a horizontal track, each with constant acceleration. At an instant of time, the information about the carslm opz7m.- zl/ 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 c0ly+(q hao0js iw/ l9tx1q/kposition $x$, 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 thnmu n39.7vxz,twhqu0 vmj 1r9e graph, which one of the following choices correctly describes the relationship between the average.wmuv3mvu, qxj90 9zht7 r1n n 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 in8slp) ufnjb1k 0l 46bostants of time, at which the car and truck travel with the same spe1 )s 4lb nf60ojlkupb8ed?

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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 alal e2fbofyv317u g)2xong the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for both the speedagf) y372vxb1f 2oleu s $v$ 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 mov j8kxli4pramw pzk+:vn( 7:+fing on a horizontal line is shown. At what time(s) is the object moving with it+xw (z+nvp8km4:j lp :ik7 rfas 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 positio* d-gkkrqtqyqa+:- :an vs. time graph proviqqg: ayka*- rqt:-k d+ded. During what time interval(s) does the mass have zero acceleration?


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