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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 constant speed around a circular path zbs u-e(-d2ao 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 referenc)oaz: j4hg a-te to a particular direction is cal) :taoj-z4gha led

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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 a;6 jwxd v+g7d ryk)cd/0xfc0d t an average speed of 50 m/s and thejdd 0d6fy0w+ /dc)7x; rgxkv cn completes a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 s at the constant veloccfw /)ogf2 qi:ity. If it continues, how far will it travel in 3.0qc2w)f: /igo f s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on aady 5-:45-rfjjsblgs.fn ma . 30-kg plank that is sliding at 5.00 m/s to the right acros4raj a:d-msb5.lnfg. -yjfs 5 s 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 kw b srlr l)b+of;u1f;3m/h and 400 km at 100 km/h. What is the average speed of ;3u fl1or blrsw;b)+fthe 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 caj 4*q5om8gnw qr traveling along the x-axis. The graph shown below is a plot of the car*gqwn45 8oq mj’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 along thex(295i nijwsu x-axis. The graph shown below is a plot of the car’s velocity in the x directin 2uw 5xis9i(jon, $v_x$ 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 motion of a toyvs/ (ycjyz0gaag;7a uf. :.vq car traveling along the x-axis. The grf/:0cs u a7gqa.v(yg avzy. j;aph shown 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 flying dcjaq8:* q/rvl ue south for the winter. At what point did the du /:qcraq8 *ljvck 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 whh,kr, 2,fpn-;jo yo s;aj. eijich shows the position and elapsedfa ,ehjj;,o s,i2; np.yo jr-k time 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,8mb* dj 3autc to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The bc j3t*md, 8uaaverage 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 velocit1z 7n9( hc :t7tqpfgft2go-wfy time graph for an object with the position timen2 -w( hff7ttft z7gpc: ogq19 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 question refer to the fe iz2rw-yie4 jm) ty032p.qavollowing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to i-j a 3.p et2q ryeyizwim20v4)ts 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 red/fy k 5oh ci;ww9:os(on0v5 oct bq6.fer to the following information. An ideal elastic rubber ball isqo;0 hc5wo 9.kwiv:dy o(n6tfb s5/ oc 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 fp6hyp0a 1z0( x4mnnz travel 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 fos,9bg4r zelvar0:q )jl, gfb9llowing 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 /k,erwco2zp ;ccnmw( j(r/+ x 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 thq5h zg +gc2cgi:xk o;q:yr 0.me 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 following scew/u+w/rj j8gl6h: oc anario: 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 do8j , bkny.iikuf kxxn6l(o41w4cg 63wwn a ramp, across a horizontal table top and off the table edge. Which of the fo fg4k3nixxu861 oyijbc.k w (, 46lkwnllowing would best represent a graph of the magnitude of the ball's acceleration vs time?


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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph represents the relationship between distance and time for anjoeo:hm. fnei+m ey5; ./t a)q object that is moving om+n:o;5/at eqe. fji.)he myalong a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the relationship between dists5/s.)ldxt9f . *bwopilv(gxance and time for an object that is mo.(li.lwx fxobst)d9*pvg5s /ving 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 object is thrown straight downward on Earth w5o07 hxud3c keith an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of tud0koecx7h5 3 he 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 re.9kxqrh 22lplst and uniformly accelerating9l.lxp 2q2hrk across the floor. The time 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+n)*cqg aqfz; rest and uniformly accelerating*c )zq;anq+f g 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 startirwfehm1gu )1 ez*)w7y ng from rest and uniformly accelerating across the floor. The time and distance traveled from tuyf) z )1mw1weeh *7grhe 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 baloowd l+qic - 2y)0:aw7fw ;akil. The position of the ball each s :; )wfdq0aiwk+7ay -ow icl2oecond 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 uniformou+ z 1xyg.j;bly accelerating ball. The position of the ball each second is o+xg.1 zybj;uindicated.
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 g)*je.7sdmiw a unicycle moving in a straight line is shown in th7e i wg*sdjm.)e 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 unic0spe)av ;9lmfw7 fp/jycle moving in a straight line is shown i7sjwpf ;vefm9)p /la0 n 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 su+pd6r26aeym h.q6gozrface 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 mo6tv-,n4,teb gzbf 5gp tion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negative velocity4 gf bvg,e 6pb-ztt,n5?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanyirrppkx gzn) u(7 k3(k5 4ksa:tng graph describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marblerg 3kn ktk(a:z)sr(pp 7xu5k 4 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 marble on a table top fof i6tfnf1.h;yr 10 seconds. What16fhi;f.y f tn 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 rescn e)kb88/s3m-gcf xet 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 with qf4xi(3 ls/yv 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 represe)urno7 lpdga kc8dhq(s3 v 3 v ,/t57g+j9yqpent the motion of an object movi)nktgae v8,q7lugqv3/ oy hj9rpd7+c(dp5 s 3ng 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 deslvh*tprp :*4jn a9 c.pcribes the motion of a toy car across the floor for 10 seconds. What ip*ln c9:pvtpr4a.* jhs 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 di8n0 iyaml7 ,pescribes the motion of a toy car across the floor for 10 seco,imp 7n8ia0 ylnds. What was 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 despd +kw (l:oo p /oyo8x-.*fpvhcribes the motion of a toy car across the floor for 10 seconds. At what times or time intervals mustk.+/w-h y podfvop8(oxpl*:o 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 uniformld*1 fbnc8iw/qs,d m:8lq k*khy from 0 km/hr to 60 km/hr in 4.50 s. Which one of the followwmd1b*c8hk qsd:l /,8q*nf kiing 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 versus time curve shown. Wg*wjvy1 bcm *i2z1v j1hich of the following statements regarding its motion isj*vbgy*1c v wi12jz1m 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 elgi)8poslf .qng kl; dc, 5,38 s*v+5kcywpm to the velocity versus time curve shown to the right. When does the cos fln*d klykc,l,.85 spge8p+3g5imv;q) w 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 tennis ball is moved so that the angle bet subjtovx y1t j0p /1yf/zr):az 45mo:ween the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during this inter: s1m4:v arfjztu x oy o)/tb50zpj/y1val 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 kilz5z86iq8,s0 ht.c ffzmz4dgn ometers apart and traveling toward each other.68hcq.n0si zmf48f t dgzzz 5,
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 and in q r7rkb;j9me/creasin; k/bmje 97rrqg

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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 velocitr, chqfe f8(a/y 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 tw4 0tyk tm2,irno dimensions, which one of the following choices identifies quantities that must have thet, 04itkyrm 2n 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 moves dta5yjj jx83s lp0:jv.61 zhv$3.0\;m$ 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-timq(30xte og o.ee, $y\;vs\;t$, 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 tot6 3zb9vaqzrele /+np(, th ht+al time T in two partbrt3 vp ,hh+/ltnz z96(+e eqas.
• 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 y*ao -1oafwt op8)q3o of a car on a straight track is shown in the diagram. The thick lineyp o)-q 8o awo31tao*f 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 forzx2/ o0pnhg5r:vel .l the motion of a car on a straight track is shown in the diagram. The thick line rzgxoe/h5pl:r . 2v0 lnepresents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the position vs. time graph shoxe.16jfqg+ nhw3 rz a7wn. For whatnr1 x+3 ja6hzfw. eg7q time(s) is the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by t gr; ;kh9p*x1rijfb qexuos()(r45sshe velocity vs. time graph shown. For which time(s) is the accelera1 j fkhbxsor5;;e4*rx9 ((pqi)sugrs tion 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 unde+z o*f r2acw91,a, f apbcfp,lr the acceleration vs. time graph for a fixed time interval of an object’s motion, what rafbw,p+,z21cf,apol9 a *fc 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 h*;c -e;ks bl1o iwn.emorizontal 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 in two8get s:64er ie bvc5+l 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 q0 i,iw opm63sreaches 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 a time 2ud/fz)2u /dv yyl0 sjof $2.50\;s$. 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 ; c6rtz/t9x4h6nwiu ygraph of a particle moving along a horizontal axis is shown. What is the total distance traveled by th6 u;n6t4h 9rx /ywiczte 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 correct5fsuc rp8-mb2 ly identifies all of the listed situations for which there is a non-zero acceleratif5 mcrsu-28pb on?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving along a line is1x6ec c7*:fr vvkm;g ( dp4mlz showne zcxkc4* f(vrvgl:1mm7;dp6. The object starts 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 azz9b 5w.uof-h long a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is movuf.5ob-9whzz ing 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 horso 0 m+q6l5u0bh sdo)iizontal track, each with constant acceleration. At an i)qus0o o0sd l mh5ib+6nstant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a p.u9ay gc* rnvf)jy2w6tp,b*i osition $x$, 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 followingoxlk/z; 6,*e4 uzsw-akoo xgzi; n;/v choices corgox kvu n;kx ;-ieslwaz4,z/;o/o* z6rectly describes the relationship between the 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 best describes the 0:pi8afhyzr 1wx7vu4 instants of time, at which the car and truck travel with the same spezh 4yvrw:8p x 0f71uiaed?

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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 andeps8x4akgl 8me) wzc13mi3 - p Q, each start from rest at the origin 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 the relation )wlec3i3spe-gk 8m1m8a4z pxship 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 l8m2 khma5fug3 ine is shown. At whm8u5g3f h2am kat time(s) is the object moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position vs. time graph xsa0-ypsm ,:a gxylf4.ku :7dprovided. During what time interval(s) does the mass have ze 7 :kd:x yl0ausfg xs,.y4-apmro acceleration?


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