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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 constu7zn0u)t g 6goant 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 unic iv t1ad9 kh +7-jo6ttv;y6kxt time without reference to a particular direction is cayt a7td;6v6+v 1ci- koj9kthxlled

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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 an ave+ o.62i tkqd ljok-jv5s3w2qzy 69i6jcdlam4rage speed of 50 m/s and then completes a second lap at an average spy4jlj6.q6jq olzi+a2d-k d6vk s5m32 o9tciweed 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 velocity. If it ng2zw,:s)scr2hoqp k p*p6,y continues, how far will it trwrsy pg2hzq c6n:*p2,) s,ok pavel 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 sta9vl u7hys*-a9zyf5w t u;f p7stionary 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 fy7hvzyu t9-* s;aslw9u75fp, 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 km/h and 400 km at 100 km/wfj;ag49kw i(h. What is the average speei w;4agkj(wf9d 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 refers to the motion of a toy car traveling along 0pg80n ,r(cj vf6qsymk(b, c athe x-axis. The graph shown below iskc0,rqgnyjpcav sf8 , b(6m0( a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to t: 9p/xa:sr 0yzjnkyr)pd 9gd- he motion of a toy car traveling along the x-axis. ::dn9 rrdxz09-ap)pkjg ys /y The graph shown below 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 motionx9p. w2cb, bzu of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s v bwxcu,9. bzp2elocity 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 d2rnmx3v 4k0f .xo0ezmuck flying due south for the winter. At what point did the duck 040xrnmvefk m2z 3 o.xstop 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 5ryodn 9vb);s/+ ktc avk;,v2v/ w jnpto the diagram below which shows the position and elapsed time of a car starting from rest and uniformlyj/ w;9,t/kav nsorndcv;v5p+v2y)kb 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 to the diagramjriq9xt4,g 0 m below which shows the position and elapsed time of a car starting from rerxq ,jmt i940gst 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 positij:blu3 5dxm(r+ i/yi ion time graph shown in the diagmx l +( d35:jb/uiryiiram 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 folxab57i93hw t,dm a7mjlowing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hixaa7hbm9 3mw id57t ,jts 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 th;hiru ggaa5.k08jga, e following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounda jk5a.u0g8ag r; hi,gs 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 spe*okpjz1rsi (y m84my9ed 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 followsq8i.a 2(ozkn6s vla+ ing 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 +k)jkvcp02 mwo ayk2xj t21(h: 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 aw+ox lru 8r(1refers 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.
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 nje /e*8qk3sl 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.
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, .i u8; michkz7across a horizontal table top and off them8u;ick. hzi 7 table edge. Which of 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 represents the relationship between distance and time for an oz vz5 qyoqis567j0 ix.f:x6nrbject that is moving xi67nj :qxfqvzs0oz6yir55.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 relationship between disvhx(ugl .h7fp72zu l 4tance and time for an object that is mo lgh.v 4pxhfzu(ul2 77ving 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 straigcz0i ,twm e8wh.oymv5d2+t y, s*0jadht downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the ob 0eydm8t+wc2o viyhz,0d *a mw.j5t,sject 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 s; ww,ozcj )em1tarting from rest and uniformly accelerating across the floor. The time and distacz ,)w1me j;ownce 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 starg(j6 c -u-qfw vh10oq3/tjzj rting from rest and uniformly accelerau1fghq3tzjjo v(c/w r6j q--0 ting 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 representsfn:mjrvx. 9/.7v lrhu a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from tjx nhv.l.fmur7/:v9rhe 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 accelerat+j+gvm*nz-fx3e : n)cws)reking ball. The position of the ball eachjx :m)cvg)*n zsw- r++ 3kfene 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 t *5pucts/azh7he ball each second is ina/*z p7tuh5 scdicated.
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 l hiks-5gh3) zcircus clown on a unicycle moving in a straight line is shown in the gra)3sig -hz lh5kph 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 unicycle moving in a straight 702 v jbmntvkvfq32q- line is shown in the graph q v m7q j2bv2kn-tf30vbelow.
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 iwiw4 koh 9b6)yn a vacuum near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a marblp/:e8o rk;kaz e on a table top for 10 seconds. For which time interkeo:k a/zrp;8val(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 accompanyin kaq va(7btx8c9m c8:wg graph describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did a cmvk8q 9at7b:(xw8cthe 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 5e k0 hw2wlulz7vvef s80; .tymarble on a table top for 10 seconds. What is the marbles average acceleration betwee00w57lwkzfe . es2;y8uvthlv n 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 acceleratesj( s pg 4z:dnuuldiwk5pk:7t0b f 5:m/ 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, thrown straight downward withol:qe/ v:7g, /hmmnly 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 followinex sfiv e:)+kbu*2 g,1l-za(sjtyus.g graphs could correctly represent the motion of an object moving with a constant speed inbx2laes1 *sk e, i .-z +sgy)uvj:f(tu 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 8:9ege j2xaot;8s o yicar across the floor for 10 seconds. What is the acceleration of the g8y8; 92xoete: iosaj 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 gf5x u9x e)*4bokml9 oxraph describes the motion of a toy car across the floor for 10 sec ke94*ux)o olm5bf9xxonds. 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 accompanyin:v966a xe/iwvjcr4/5 queak gg graph describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on tugiv:4x6cr9/5av ka ee wq/6 jhe 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 uniformlz15 .k)fb64.msr0ekx u gmn0l jvxc8cy from 0 km/hr to 60 km/hr in 4.50 s. Which one of the f z8.xk 4.n00fe6)xrumckv1j c5b gmslollowing 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. Whikvuf.61 fn4 m)nz jp.kch of the following statements regarding its motion is ) unf1p.k4.vjf6mnkz 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 to the velocity versuwy hrtn w1qd6*nr46.*0rjhcfs time curve syqh rwdtc60n14h rfn*6jr.*whown 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 interval of kfzlh8 y mhm9 8feguk16j,8z)time, a tennis ball is moved so that the angle between the velocity angu mfzy9e88lhmjh f )68k1z,kd the acceleration 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 t:sat3bn7v-a e raveling toward each other.vtab an7:3-se
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. Whosl r8f0.ai r*en the acceleration is positive and inc8.s lfriar0o *reasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitio m rg8b8yg9uvu i)x3:wn of average 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 dimensions, which one of the foltri(gp*ozmb(,nr 2b1lowing choices identifies quantities that must have the same directim b(orgt,1(z2 rb*p inon?

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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 a+)ocam2kp s/qs 6k5b$3.0\;m$ 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-2tolm0e d3 :bb zkyx52*k ;rwqtime, $y\;vs\;t$, 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 timer f :l;ckgf6hvm(w9 0m f.,boh T in two parts. b:v m mh;f. (fhfgc,0owlk69r
• 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 vcjrcici1)d: 5 ypx b08s. time graph for the motion of a car on a straight track is shown in the diagray8:x)dpbcic 51icjr0 m. 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 motion of a car on a straigwoac5ax 77/7emgrle euf r7 (e:(4nzqn 5mq3iht track is shown in the diagram. The thick line reprea5n/q 5xc7o4qur: fwim e3 7 alze7 e(mr7g(ensents 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 pop /tn8sgdxhi 9re2-5isition vs. time graph shown. For what time(s) is the ptge/2is8r9- i5x d nhspeed 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 apk5 ;n.mfpq /shown. For which time(s) is the acceleration of the object equal to 0/nppk af ;.5qm?


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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 graph6+,ykw ulc wwtsn;l, ob;o.3y )wx ijup(ty7* for a fixed time interval of an object’s motion, what quantity has been determined for that objecttntlux. p j3 ;7wyww6;cw o*i(, ol+yb,s)yku ?

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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 horizontalbau(+y98rt44hdu t uc 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 ty-4j;- xb3i q ub8*mtxazi,u jwo 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 reaches the ground in u so2adph.ml5sm*bg:myp14 4 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 .8r fy(egfkk;iug z+-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 particle moving along a horizontal axis a enwu (m5/;ivis shown. What is the total distance travuw/ i5e(nmav;eled 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 correcl:w0dmqo7 a2o tly identifies all of the listed situations for which there is a no :dmwq2olo07 an-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. tirlh,t4l.u y 1wme graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) tl 1wh,ul4.rydoes 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:5 au/ mrcs*yv a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time fo s:5cy*vmr/a ur 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 co :qiw-j +0* iuckxhr-nnstant acceleration. At anc: jhii0 r*-wn+ k-xuq 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 c;k7y hxn,i uqs3hr a (1nyds3-. sz5da position $x$, 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 ofnf* -nc)pjabi/li h7cn nq5*, the following choices correctly describes the relationship betwee7c n j* h5/,n)abn-lin*iqc fpn 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 instants ohx51fq fh z6g99y/frsf time, at which the car and truck traz5 y9g/qhfrf6x9hsf 1 vel 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, each start from rest at the origin and will 3:( *y c(.o lemb yoe0otjl9xwmove along the x-axis. The atejey( ywmbx o c9l0ool3:(*.cceleration 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 object movingpdz7q19a x(xq on a horizontal line is showqxp q 9z7adx(1n. At what 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 prqi 1h x 4l4jq9up8ap:dovided. During what time interval(s) does the mass have zero acceiadl49ux8: 1p jqqp4h leration?


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