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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 ak g 9pbya,cbls1a 9xn8s)me6ox+. gy2 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 w;kl8 a6,sf*( xc rvaemithout reference to a particular direcsavflx r;8c*a6( m ke,tion 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 circuvtx+7p iv-(3e/qube u;dr.uular track at an average speed of 50 m/s and then completes a second lap at an average speed7 - dqiuvub3/ep;u +xtr (evu. 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 aghytheui mp ) 11mi++3t the constant velocity. If it continues, how1+mime3+ iu)gh1yhpt far will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is s6lrkqr7)oa ic**d)e1t 0p hqu h-yx:ytationary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. Theqqikp)eoxl h7-atd* y y r u6crh01):* 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 travelg2l0ci*g+p +bin8rr w s 400 km at 80 km/h and 400 km at 100 km/h. What is the avera br*2iirgl+gw+n08pc ge 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 refe gk3s4 wnl8(tzrs to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x directio4gl 3kw8nz t(sn, $v_x$ 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 caicrb0qq, vj5wo5wa/zr0b5p 6 r traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direc0pb5q5, qvrr5wji z/6wa0ob ction, $v_x$ 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 toy 2 -is+l y3yxy;tc+teg4oyij(car traveling along the x-axis. The graph shown belos cg+l ;-3y(t te jyxiy2i4oy+w 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. ti f65v;z;iv+o y* hlrapme of a duck flying due south for the winter. At whaa6;zyf ihp*+ o5rvv;lt 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 diagrid.c rz 8obt ,:wa9ay7am below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during the t.8 rb9a,yiz cd7w:aothird 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 ,d9 bc cyk4 :6oj/dj1gsxre 8 ynjh35gwhich shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second xkgc 549hj:njj3 ydd/sc, 86b 1oregyinterval 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 tigd i4ks4xr 0i8 1ug-ofv2sh d+me graph for an object with the position time graph shown in th1hsruo g4fskd-4 d0i8 vi 2+gxe 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 following information. An ideal yr7l65d 2sqx0fbm :; coijp)pelastic rubber ball is dropped from a height of about 2 meters, hitsm 2r:7spfby6cqo pj;dx0 )il5 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 foll3r5rd) n)9x phriew+ kvl*;5bs ho o8lowing information. An ideal elastic rubber ball ihvbi;d* 85)3) k lsr+rlnre9pohow x5s 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 si;k- f3pt3z, ,n6gn i*b 9ocfjupb.um6h x 9tzpeed 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 follok: pv7.4slomi ce1,f s.6b6 j-yn o6 lokenl1pwing 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 t mc8il8qkln/ bp4k*b,;;bc uahe following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following scenario:(yh gt*sldewh nk 385y-gl5 n* 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 scdljs-y6cl, /0wj:w,zlbyezi,v ozm9o 0,1u cenario: 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 tahe2i,8-lb74z 9mtobxe -naocdt +y w+ble top and off the table edge. Which of the following would be2m7l9+d bwt- hicn4ee8b +t oxz-o,ay st 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 be zs(jcg s7e3l f2+b9gls3n5 yatween distance and time for an object that j5ne+bsgs3 3a7ly c2l 9( zfgsis 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 represents the relations)xooju0+*vim( e ged 6.ns/b fhip between distance and time for an object that is moving along a straight fj6un/+x* b i smoe. odg(e)v0line. 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 Eamobx r)6mz08c rth with an initial speed of 12.0 m/s from a position 10.0 m above thorz8xm b0) 6cme ground. Ignoring air resistance, the speed of the object when it reaches the ground is

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represents a toyxy8y42u x3tf, 4 psagy car starting from rest and uniformly accelerating across the floor. The time and distance tray4tyu 438a2fyspx ,xgveled 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 st,fa qv;m7fg owzo9g33 arting from rest and uniformly acqg3f7g ,9wfazv m;3oocelerating 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 ixt-jnm*/b ;ia toy car starting from rest and uniformly accelerating across the floor. mbn/;xji*i- tThe time 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 accelerating ball. The position of the ba 7ssslpt98(c allss8csta 79(p l each second 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. Thedfk;t/f:e/p cn-8bpz position of the ball each second f;knzp8:c e//d tp-bf 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 au ini to4prx2p22fs, ( unicycle moving in a straight line is shown in the graphfist2onp, iu42r2px( 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 unib:ol.u 7 a .jw42di+ ilmhih/1hqt4uqcycle moving in a straight line is shown in the graph below/1 h w:qboutui7. imah42.4+q ihdjll.
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 vacuum4e8/hjm we h,y qbh14p 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 mo fqd.67r;efn8 l* 7bzhaqlc w5s8 u8gjtion of a marble on a table top for 10 seconds. For w8q.sar6f dzjl5c8q8 *hnfe 7ul;wgb 7hich 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 graphbals +r + ciuyxts3)m psf+rq3u988(e describes the motion of a marble on a table top for 10 secondscmqs bl s ++uatrr3+(8p89 xfesiu y3). For which 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 aq4g5 h mxmkd89 marble on a table top for 10 seconds. What is the marbles average acceleration betw9q5x kd8g4mhm een 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 accelerati:ukns(wb: k:es 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, thxa (kt 4/whx9.bbw-l trown 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 following graphs could correctly represent the motion of aafu+ s/t:hx8u n object moving with a cons8:fs+hxa uu t/tant 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 descri8 k-s:aa(jvkw0q re4e bes the motion of a toy car across the floor for 10 secondse:e kk4aq 8(aw- vj0sr. What is 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 2z( mjz1m lag3ve ysdq)m3)p9the motion of a toy car across the floor for 10 seconds. Whpm) ds3 m2 g9zq1y( m)v3zeajlat 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 describes the motion of a toy car across tqpwp / fxd5 dp*b6x;v4he floor for 10 seconds. At what times or time intervals must the net force on thxp 6dpx5fpq4v/dw ;*be 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 b+cj n +21ikfhp .hc,/x+u:x2jtxa mato 60 km/hr in 4.50 s. Which one of the following choicesc 1x,+:cx+ ht uj.f bjp /xn22ah+mika 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. Which of the followingya)87xvk +d,gegad1 r statementsda7 dr8kg) x,+a1ey gv regarding its motion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according u*x (qdaq 1v jxech9pg3bw .;3to the velocity versus time curve sx*d qu1ja; pxg ew(c q33bh9v.hown to the right. When does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an inter1t zt r wq:mrew+o6gd.r )e4g 54eje2eval 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. 4t2j gr6greweee)dm .wzt+eo 54r:1qWhich statement is true about the tennis ball during this interval of time?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are 150 kilometers apart and traveling toward each otherf1z di. .mxhe /n0v;;; jvyaji.iy;0e.xnjda /z. i1;vv mh;fj
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 ,k;)1qbal 9iwz:rho c acceleration is positive and increasi9h: o)qc; a,1zkwb lring

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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 aver mp9a4z3yj+1m upgqw5 age velocity is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two ; lypu2 y2owv/g)6j gwdimensions, which one of the following choices identifieswyv gjg )wuo26 pyl/;2 quantities that must have the 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 move):r / pp;o ux:cekw*xtd,qs 2es $3.0\;m$ 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-tekn x2fvdiiart- ;404ime, $y\;vs\;t$, 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-dime56tpa 5f wjk(xw11w einsional track for total time T ii1tf6axepkwwwj 5(1 5n two parts.
• Part One: The car maintains constant non-zero speed V for the first $\frac{3}{4}$ of the total time.
• Part Two: The car accelerates uniformly to rest during the last $\frac{1}{4}$ of the total time.
What is the ratio of the distance traveled during Part One of the trip to the distance traveled during Part Two of the trip?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.23: The velocity vs. time graph for the motion of a car on a straight 5w;n/jc-di saa75lzf track is shown inzd 5-clan ;/aji5sw f7 the diagram. 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. time graph for the motionu 3gg+ye ;tqf) of a car on a straight track is shown in the diagram. The thick line represents the velocity 3g)tq egfu;y+. 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 p.v hg;cdi9 b/graph shown. F g9;p./hvdb cior what 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 the velocity vs. time graph s7bokda1 2tk*s hown. For which time(s) iskt1 d* 2o7bksa the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs. time gra(+3iz afyx(*: x edfnsmq:1a zph for a fixed time interval of an object’s motion, what quantity has been determinedyz(sm ie1+f(* nx:3fxqzad: a 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 8a d,y a l(pewho:q41mline 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 two zjc 4n/ -e5aguparts:
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);bpa jo27lxme(m-leq u3f k)q(ni q 4 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 aq i fo )yhypnoe(x;+jw84l ,2bnd 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. nls0wbt2w3 1t(aaqv4 time graph of a particle moving along a horizontal axis is shown. What is the total distance trava (t3bns1qwl 2 vw4a0teled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices correctly identifies rvk- ,qaml9y 63nrx,g all of the listed situations for whirq gv9 - x3kn,,lrma6ych 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 object moving alongk0a7 /rdlj ta/ a line is shown. The object starts from rest at time t=0 s. At what time(s) does aj/0/k7rdat l 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 li .8t id:f3h3dhs3 lqbine vs. time is graphed. Which one of the following choices best gidh:tlbqdi s38f3 3h. ives 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, d +bms-(qw 0,ygracv:s3lu. heach with constant acceleration. At an instant of time, the information s hg(c .0bsw,+dm3y uqv r-al: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 positionbgf,n48io+ di $x$, 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 th yesw+gmm0nt.4zm7g 3 e/o/zqe following choices coe mqgo+zn73mm 0.s //4 wtezygrrectly 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 degydt+v + avsn1h7-vc(:q k*n1vqp7h vscribes the instants of time, at which the car and truck travel withvanknv+ : h17qtgp(-7dqv+ yv1v* h sc 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 startp*jw8m 1t m+xf qqg+.q from rest at the origin and will move along the x-axis. The acceleration vs. time graph8+ *qfq+pq .txj1mwm g 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 object mo(kfsp bn( p dnkg4:q)3ving on a horizontal line is shown. At what time(s) is the object moving p p:d( qkb)sk4ngnf(3with 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 graph1e*tl 1b.hkolz0 xt2e provided. During what time interval(s) does the mass have zero accelerati b2leetxtzhk 01lo1.* on?


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