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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 constw- ; 6cfsz7j5uanqy1rant 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 dir;u ec: oz2a,q9rrma 7stance per unit time without reference to a particular direction is callemu r,caoz;2ar7:q r9ed

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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 ondhh40e(zd. (scn mj c)e lap around a circular track at an average speed of 50 m/s and then completcmsn.0e (4hjhd(cz ) des 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 constantbgv 7b ,op f:v8/2k e+al)aquw velocity. If it continues, how fb e qb2: vko7v+a a/pwl8)g,fuar 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 np7av1e b r3ik/( txj9stationary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank.ke n9jr/v(b1xt 7i3pa 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 km/h and 400 km at 100 km/h. What is 61qt*9+z-zl lzvg 8coxp b od.the average speed of the motorist on this trid*z-zq 6 gz.+c 9tvop1xlbo8l p?

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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 traveli .jlqw7bt 4*m6yqe. ucng along the x-axis. The graph shown below is a plot of the car’s veloc lumcbwqy7*j4 tq.6 e.ity 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 travelie(yof c4 3qv 0h x7vuohlop1-6ng along the x-axis. The graph shown below is a plot of the car’s velocity in the x directio 7ooo hy4- hu1ef3 lqc6vpv(x0n, $v_x$ 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 motiluyx kuw, n5)o:udw9/rw5kd1v*u + iaon of a toy car traveling along the x-axis. The graph shown below is a plot di9nw*a oxk/ v5k+lu, u)dwy1u 5wr: uof 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 ducko+n+3(pb n gty ur4c6o flying due south for the winter. At what point did the duck stop its forward motionn++ur( goc yb6p t34on?





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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 refeu,ebutm(f) j2 r to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What w,2me( )jfuub tas 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 thpch2l q425fmm5rs8q8ws- 1dl wkkoe*e diagram below which shows the position and elapsed time of a car starting from pl5lof e2 4ck8srw5*m8q w 2hq-m1sdkrest 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 objec-suzunn 3q* :pt with the position time graph shown in the zqp* n:u3- usndiagram 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 t5 rtc2frp80p wo the following information. An ideal elastic rubber ball is dr0 r5wpp8ftc r2opped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following in1b,0wp q8xrrpformation. An ideal elastic rubber ball iw81,bx p0rrqps 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 t54tsqabq3tqm(ph 4v4 u4wxe ,)1uixjravel 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 sce4u++s22 q.kizocw refers to the 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.
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 refe(zbttsttnk7m3z/vg;rmi 5+b6u :3tf d 1wen( rs to the 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 sc 0/+nwma;w jk+1sjyclenario: 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 scenario:zb5g tk9t x 6qu0g8 k6opzu5:f 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 a77a+d:ex:p(j cjv)hn )kuts table top and off the table edge. Which of e)cks:)7dhtu: 7p xa v+ja(nj the following would best represent a graph of the magnitude of the ball's acceleration vs time?


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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph rep qo1ys5p g7q:m 5is7 oci4 s8d2fef7tn5cz:uvresents the relationship between distance and time for an object that is moving aizugv q7f5oic 78c:t1s5 :qdny5pm fs2e47solong 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 dist/eh)e-b d/ bgtql0r+pance and time for an obb/e- ler +d)tb /0qhpgject that is moving along a straight line. Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on 9hhqugd+g rzr+*p*e4y( mzd2Earth 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 qgde*uh*++ hzr9p2yzm( r 4g dwhen 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 toq- 8 6edr5 n.y6hzrg)kkbdm bj+:1vecy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown i6jdbqvhd kme8-z .c :5+rgy 16)kbnren 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 start.g+lz)p.nny nuk0 /udrc1gb4csm;sa3 f*y5k ing from rest and uniformly accelerating across the floor. The time and distance traveled from1.f4k/bnmp5d3 .lcu cn+g y 0kargs *z;)uyns 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 representshm+f9: azcaf0 a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are show0f faahc:m9z +n 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 po z3oxhphnu )rhd; q,-v)d1x3dc5)lexsition of the ball z3xen)pdo1)x3 ;- ulxc,q5ddhv r) hh 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. The position of tw .pavxaag(t65y b ipz)1s4+ mhe ball each second is indicate wv)aaxmppz ti1.6a+sy( g 45bd.
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 uni. 9ru91zmyu)nq 4npha ;rexs )- g3fcmcycle moving in a straight line is shownmsz 4n9n)ypcrxm9)qhu ; rf1.3- u gea in the graph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a cirmj/-xksf s1ln*ijd 4 3cus clown on a unicycle moving in a straight line is shown in tj m-x/k j3l4sfsn1* dihe 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 nearq08nawgl3ydlt0cdna v pst6+y/)86l the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a marble on a tabdmz x;7g osr3leo7;y(9j0ralle top for 10 seconds. For which time interval(s) did the marble have a negative o0l;m77a yx;rj(ol9 zrg3es dvelocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of a marble on a tablrhzaza (;iqk7;2s h0 he top for 10 seconds. For which time interval(s) didh k;i za ;s72hqhazr(0 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 b fkn215esm;g1mev 5k of a marble on a table top for 10 seconds. What is the marbles average acceleration between5s 251e;mbvfkk 1e mgn 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 for a *r; w2)yicr.a ze2d dp8dim+htime 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 a speed of 1go oecj8k4q +.ael( xw;hf1f$20.0\;m/s$, 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 fojs j6cklbcl)) .,r)qollowing graphs could correctly represent the motion of an object moving with a constant speed in a straight linq)c)r6s lk,lc. jojb)e?


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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 across the floox6g jr zr5t* (-7damxkr for 10 seconds. What is the accelerat-*6r kagt x7x(j5dmrzion 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* :e;j xkzvz7r graph describes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the t;jz:ev7* kzrxoy 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 grapmfj.qya z4r- uf er,/zru(p/1h describes the motion of a toy car across the floor for 10 seconds. At what times or time intervalsj a-qy,er/. fzprruz m1u /4(f must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr to 60 km/hr is1zh 2q9f;h/b ds)t76li dsrgn 4.50 s. Which one of the following choices best represents the accelbt2hz/h1q dgd9sr 6);sfs li 7eration 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 1thvq)tssx+x:th ()n time curve shown. Which of the following statements regarding its motion is 1x( )ss+xhq) t th:vtnNOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the velocity versus time um59 mf4.lm y*27xb v)ywrftjcurve shown to the right.2y 7) v fmrtx.ljy4wm5bu*mf9 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 interval of time, a tf3 n0 58n u1wu+:feclfdkjyo .ennis ball is moved so that the angle between the velocity and the acceleracn3u5+ lk fjfny of.w10d:e8ution 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 kilometers apart and traveling toward zognpxac*c92*c)k 1f each other.n 1*x kcgof)*92cz pac
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 moe2dla-5b12jp uk s-xg ves on the x-axis. When the acceleration is positive and increasingal-xj gbs- 5 22d1kpeu

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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 averagex 2qlc +:lduh j65u6jn6m a/ay cl,g(e 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 dimd novya zvkqbl5 22 -0v-*p*hxensions, which one of the following choices identifiey0vo a *-xpvq *z 522-hdkvlnbs 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 move0 vzabgxcxf6 ;r c(/)ms $3.0\;m$ 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,wor,e n +f 2r97koc,rp $y\;vs\;t$, 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 t 37sikbyix)trfy 70zf89ire1otal time T in)es7 yi089xbi ifry ztr17kf 3 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 stra3bzy+; s4 3q8;-w 1tpdjhdlissrpa 3hight track is shown in the diagram. The thick line repr8 ds3d1 4sh; ;wbz-3jlish tpq pr+ya3esents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of --33oef nlv(nhyio77s1*q nn: ym wesa car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starm3fhwyns :oe* -y13-qv77n lne(n isots 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 aa/:5mxmurp n5mgj0wm+f: *k object given by the position vs. time graph shown. For what time(s) is the speed of the obje+a55kgu 0 mjrf w/p:a*m nmm:xct 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(+-ld5s nkdh 4q2me pt vs. time graph shown. For which time(s) is the acceleration of the objem4-s kdd5ne2 tpl+(qh ct 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 acce2. )wbowbe,.ep 0fwn hleration vs. time graph for a fixed time interval of an ph0ebn2. wbfo e),. wwobject’s motion, what 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 with increasing39o(s/azyukv /-rza;w)gwxq 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 ta-xxu gln+f1qv)v( 3 bwo 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 fr3xh 9-6rk oyg-zwvj)p 5xy-tnom 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 releasbj0j; t3 7cin8 z*kxlyed from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a parti34d )ii2q5ostqsx6k e9b5 nhs ch, hw;cle moving along a horizontal axis is shown. What ishwq;9s5b xohdh,q )t25ski3n4 seci6 the total distance traveled 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 all6pm.ygh o5a+b of the listed situations for which there is a non-zero accelyo6ag mh+b .5peration?
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 ;pu st 2+4al hyk *5/p9apezqralong a line is shown. The objl+p4zsu/2ray5; tppak*qe9 hect 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 along a lin )qhw+doqq:kt3 tjllja81vz1p (d/,c e vs. time is graphed. Which one of the following choices best gives the proper interv+ jzhtcd/1qtajq dp(),3ll v8k: 1woqal(s) of time for which the object is moving away from the origin?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to the right on a horizontal track, each with consr41s0a+ ao qa*d*(nronhvq8atant accelnro1avq8 s*+r4 *h qdaao0(aneration. At an instant 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 posp(d 5g :wq+e1p*wyrcigo l4v2 ition $x$, 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, whft/zd 7vjv*27yzp hg o02zd)uich one of the following choices correctly describes the relationship between the averav )/ gdpj2t o zvhdz7*ufz02y7ge 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 desqk2y.;rbq z , fe59rhicribes the instants of time, at which the car and truck travel with byk rr2f9e;.hqqz i 5,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 st z7m q m+pp5bbc(m23wye, mj3part from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Whi3 yp2+weqbz(5mbp 3cmmpm j,7ch 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 a1zcz g2w-kqdu*wkohr3j 6 3o:n object moving on a horizontal line is shown. At what time(s) is the oj62hdg ko*3c-wz:zuq 1w 3krobject 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 pr:+v dn. ivfn7tjvi 6l3ovided. During what time intervai6vidtv. : 7+l3 fvjnnl(s) does the mass have zero acceleration?


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