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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: 游客未登录  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 consta 5;p**;4zdnbkrml 1o /fihc lph1yu-i nt 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 unit time without refer2* owswv+hgq+ ence to a particular directionhwq2s+ +ovg w* 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 around a circular track at an24cq 7.:hq3hzd f5j .rkhuksq u v,i0k average speed of 50 m/s and then completes a se2v47 kh0 h:, c.rf5ud3qhiks qzu kq.jcond 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 a v8b0r18dzm blt the constant velocity. If it continues, how far will it travel in 3.bv 1l08zrbdm8 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 p /9d3fdcugs *(4 iasr0rm0austationary 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 9*0 m a/ud sd04 3cspfria(rugof 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 travelw- v1 4:e.pirp-n uwsrs 400 km at 80 km/h and 400 km at 100 km/h. What is the average speed of th-:r vep .p4wi- n1wruse 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 travelsr z4d+1wd v8ming along the x-axis. The graph shown below is a plot of thesmzd8r+w1d 4v 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 mo 6.lfi8xl0er k;* os0p9cgwcd tion of a toy car traveling along the x-axis. The graph shown p6i;*8olrfgde lkw0sx .cc09below 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 s uak-7((3*ihi wwt kvd-dwg*motion of a toy car traveling along the x-axis. The graph show- s i7 gwhv-d(u* ki(*3kdwtwan below 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 flyifgoe7 8+dy- cjng due south for the winter+g dcfo7eyj-8 . At what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagr+ nlleo (x)ki5am below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was()oxel nk il+5 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 belowc0z x9dx;;j ww which shows the position and elapsed t;c 9j x0dwx;wzime of a car starting from rest 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 the velocity time graph for an object with the posii9rh z96 l fyu.lgfw.:tion timuh z.9i:llwfg9r6f.ye graph shown in the 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 questswva ;plisb:c3fn:2e 7. i5i*eoa) xxion refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its oi o esxns ifeb3ax2wc7;)p .l5: :v*airiginal 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 eg7b/,l fmu/ 3)cxw wf/9elgsw-whpy 3 u dy-+zlastic rulc9fyy3-w w+ /7f-) gs,/ ezbmpd3/ h xlwuwugbber ball 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 speed ofr0,j ;t 7hq/hsuono ,f5spp8t $v$ 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 followit:0vrg/93 q xnoi2vomr3b(n2fkm* ilng scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers to the following scenario: At mcjbl ,1*oh( q$t_0$, 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 txa lsfm72 r;a-he following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
Which of the three cars had the greatest average speed during these 5 seconds?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.04: The question refers to the folls(pk qsn 6 mf3o3s)wqqke7y) w6ve(*yn n 4ld6owing 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 horizontal table tfkgz (hf59:h :4 tgqgfop and off the table edge. Which of the following would best k94fz f5ggqhgf: t(:hrepresent 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 e 320ms8lfneya7(9b hwbt 9q jbetween distance and time for an object that is moving along a straight line. l qjbb9ys0fn3(meta29 e h78wWhat 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 t+p-i- j k /:zla02nekx bzbih)ime for an object that is moving along a straight line. Between what times did the onj-:i-0 xp ) bz kzl+ak/eb2ihbject 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 arc1igo,-mqv-d f c9 3vxnc50 wn initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the objevi cw coqf19-gcvxndm 0,-53rct 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 startingf 4bbhr mg7ygkm ./5*n from rest and uniformly accelerating across the floor. The time and distance trav4mgngbm7y*r5h.b / kfeled 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 toynb h q:ft+/4vjpfh/h;6gbm a, car starting from rest and uniformly ach,thbfamb:qnf //64+;pghv j celerating 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 car starting +:b v 43krazkyfrom rest and uniformly accelerating across the floor. The timzyvr:kb 3 k+a4e and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accjhdrm8 1-)lmwa df3xa6 j. ,aaelerating ball. The position of the ball each second is indica1d3,. jamar6 j-d hmwlx a8a)fted.
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 poybcu bkh *m;d2c8cd db8;k s26sition of the ball each second is indicate bb8h2m yd8uk;ddckc*2sb; c 6d.
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 ylt-9riyk)8u9pbzwk( i(ocjie; /7j unicycle moving in a straight line is shoc iplk8w y97(j9(r)oii tyuk /zb ej-;wn 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 as 4repx7*ytyk6 s0*lt. grq0 c circus clown on a unicycle moving in a straight line is sh.p s 0xyrg76 el 40**qtcytkrsown in 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 surface, qp6d0qm9)vlxunk:+yjnc v) 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;fvqk/ 7g2tcb9qb my*u w zj/6 a table top for 10 seconds. F b6/ 2c 9q v7bu/;zwqtm*jkgfyor 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 moiejfs b4h *0q3-hpwo :tion of a marble on a table top for 10 seconds. For wh3*phj0- ob4 wqsif:h eich time interval(s) did the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a maelq0i fldzy xcl h,m 1p/c80jo*0xu8; rble on a table top for 10 seconds. Wp* y1l l; 0mqxoc dl8jhcx,izfue8/00hat 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 accelerates uniformly from rest forbcjd3*o, jbx: 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, thadt y38i 1wo/zo-cb 3urown 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 followixhcbm)w*apy .7 xpz2 2ng graphs could correctly represent the motion of an object moving with a consb2ph.z7*x xw2amcp )ytant 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 j7qcd5e/j,uge qv ao0k yh*/ 2across the floor for 10 seconds. What is t 5hqejd*uo7vqk/2 e0a j/y,cghe 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 acrosicdhw oa5p91mdfw :t-2o8c0((rjzeb v,m g1ys the floor for 10 seconds. What was the total displacement 1rfw5do tic (:he90j8,m bg- oym wc az(2pd1vof 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 motgv)d/s 4)d1gxqmdb j ;ion of a toy car across the floor for 10 seconds. At what times or time intervals must the nebg4x ;vjmdq)d/ g)1ds t 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 uni u7;gi .xjd(*miv1rjc/8urgl formly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices bvru *gxji i71;l8mgj.ud( /c rest represents the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time curve sk sqf1hey.7g r+ we:1m1(ugzfz*ie7yhown. Which of the following statements regarding its motion is NOT1se +e1yw7ze1uh:7frzmy ig.fk *gq( 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-ax8z oruj9tpkzu .bhbq 3w0)h39is according to the velocity versus time curve shown to the right. When doeubzh9 w q39 t3jrpbkuh) zo0.8s 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 tey -oj bde24 lkbtkhx1o7kd24 7nnis ball is moved so that the angle between the velocity and the acceleration1yd k2 t4b-ej7dkxo74h2bok l 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 kilometeo j: jxp(n9)i9ediv gj88q nm3rs apart and traveling toward each other.xvmj39j q )9nj8(n igpdoi8e:
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 positive a1 +fgac,xxu, jnd inc1j,c u+xxg ,afreasing

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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 vednfjyk / 5 mcmx9.w0j5locity 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 h2smjhr 68fts :9u kefj41qo (following choices identifies quantities that must have the same ft4q(jo fhu:eh1srsj2k896m 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 movesd(,rv .7p: 3raaspkvi $3.0\;m$ 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-timt, wnngx nh2*8e, $y\;vs\;t$, 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 z99bwfwiz+ 0)epva *utime T in twz)wzp9 bei+ u*0avf9 wo 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 v:jefrf-t f;i;pg572yws ,zs for the motion of a car on a straight track is shown in the diagram. The thr;5 sfw:p ef -is, ;2ygftv7jzick 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. time graph for thezluovjw21o w/ kr5ed1)mt.(h motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car sta()kzhu2vo1e5 1dwtw. jrl mo /rts 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 objgljxy*a 1lwp38m 4 /cvect given by the position vs. time graph shown. For what time(s) is the speed of the obvgl4jl3yx*1 p/m c8aw ject 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 velocity vs. time gr0mue2mab m eh03m4+g raph shown. For which time(s) is the acceleration of the object equal to 0? a m0+mubghe0m24e 3 rm


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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 fix1 vxs 8cl2bsj++nrnc0 ed time interval of an object’s motion, what quantity has 1vxj8c ncs2 +nbs0+rl 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 hor q8m: 5r q::ygrvdvke3izontal 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 trip i so+l/82tmfm bn 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 relea u0e;+vp4ybyr sed from rest 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 is released from rest and reaches the ground in ahe9 6 wjwqikh6u(3;c z 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 horizonta9- uwis 7rqqa1l axis is shown. What is the total distance traveled by the particle from t=0 to t=10s ?sua1 9w qi-qr7


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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 them8u84htf eph ; following choices correctly identifies all of the listed situations for which there is a non-zero acc8p4hutf8; me heleration?
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 0 la2:d znix33eg;8wwa 4)7 kc ktebromoving along a line is shown. The object sta47 aare;c x:k02g3o kelz8 dinww)3tb rts 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 velocity along a line v o qbel)4z(kc,s. time is graphed. Which one of the following choices best gives the propel,)cbqzko4(e r 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 dz-liu+uc//u 1 lv z* )mizgf5track, each with constant acceleration. At an instant of time, the infomu-/il) zfu1 +v/zg d5c*zui lrmation 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 posios*i,im.,zir r h;(o qtion $x$, 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 choicee,ze) ntoc:ilu3z:bju2 r:0v s correctly describes the relationship between the average speed of the truck to that of the car?l, :c)zo:z e n3e:vuu0tji2br


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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 time ) 3z 7ct quwn( 5602pprmnyvw.cqis+c, at which the q2nsc +3m)qi0v(ct r cyp uzww75. n6pcar 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,e5e 5n0s.agf or0x5ke each start from rest at the origin and will move along the x-axis. The acceleration5nr g0ef0o s.k 55aexe vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of an oxbv+)9m4q5sqqy+vyd bject moving on a horizontal line is shown. At what time(s) is the object moving with itysbqvm d5y)9++x v 4qqs 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 jdqvdi: olrf.(m 9 ko 4ahnb3;t4 p09qvs. time graph provided. During what time p9of3 :la9r(d j;4tmq0 nqid4 ohk.bvinterval(s) does the mass have zero acceleration?


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