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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 constasm,bfr4+y7fa nt speed around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit time witho 8 )zk*5gn l*spbi1giqut reference to a particular directioibggiz1ks)lq5 n *p *8n is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular trackupe.rj*0bl7,2y ewaa at an average speed of 50 m/s and then completes a second lap atw7*aaylp0 eu2jb ., er 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 v5sm/ uu(p to;h5pnc0j nxq,dnw0)oma 60i/wielocity. If it continues, how far will it trw/ u 5w0mop;s6pc5 tnjniudon,/q0h)a (imx 0avel 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 stationary on a 30-kg p+7awx vs8)2ddyo 0yyklank 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 yv yx7 2s) 8adwky0d+oat 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 km/h and 400 km at 100 xelc 63u48dep km/h. What is the average speed of txplcue6 43d8 ehe 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 tha.:/b afk-iy;8ccqv v e motion of a toy car traveling along the x-axis. The graph shown below is a pl/avc;i 8vck q.-bfya: ot 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 the motion of a toy car tr-ktk kc(nsz8:aveling along the x-axis. The graph shown below is a plot of znkc 8k t:sk-(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 motion of a toy car traveling along th d d zl.ofgc,;,l(m:q.opcpj8e x-axis. The graph shown below is a plot ol:c8c jg., lofzp,dp ;dm (.qof 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) msc4rm-p j6nr81upoyz l*;yme of a duck flying due south for thpsp4 o;-jlrmn*z8c 1y)m6urye winter. At what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refeyklm4 x4fysz3)hw3k* 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 was the averagxlh yfk)wmzsy 434*k3e velocity of the car during the third second?


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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.18: This question refer to the diagram below which shows the position andx+1xrfip 2v6rlki: a. elapsed time of a car starting from+x:ri.x6 afk12plriv rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity t 1i6+/oyr5 r4dgdnik*ysm 2 cdime graph for an object with the position time graph shown in the *2yyrmc i614sd 5ig d kd/o+nrdiagram 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 fy3 ( t1-schvzzollowing information. An ideal elastic rubber ball is dropped from a height of about 2 meters,v y 3c-tzs1hz( 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 ra ys2*h*l h1qyos s7)iefer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original heigoi2 ssqay )h* *7ys1lhht.
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 spee+jq:vsbwl b9+zbd .164pvyxgd 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 follo, hhngc0wwf (s9v ql/*wing 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 scenarn a-)i9ow oma9z8 es(jio: 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 follolnd5;3m )n,zd6pk 2 rfzytp3bwing 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 followbf(jqkkd;d /xn d .hk5ra(.-0wjnl 6cing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a o7sfamu; d owjkb 60fkv +ppmn,;4+c .horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude nbav+u7;s jm4d, +pfpm0 fck;.o o6kwof 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 distancv5sy;-)-j p 7 t4jy) fh)vjhqmx6jkfje and time for an object that is moving q -k pvj6h57s )xmjyfj; -)y4fhj)tjvalong 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 distana-:xnrrl g97cce and time for an object that is moving along a strair:c7 l9xang- rght 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 Eawk-g( (s e+artrth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignor wsar((k+te- ging 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 belo ffm(msxl/i .wc0:/ln w represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance nm/.w/fm0f clx:l s(itraveled 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 r 6rd9anm.6r1 iujbhy ej3rq,3 est and uniformly accelerating across the floor. The time and distaj rn6i,be j3r.ymq3rd 6h9 1uance 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 belowu(;/ lldnir q1suz46uz:jc ko+t2xf: represents a toy car starting from rest and uniformly acceleratinl 42 j(xu1z+z:islq;urnf6:/ut kcd og across the floor. The 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 y8yj,jsn8 txck-ougl ++jq.(the ball each second is indicated.(-jqo julk j,8s yx +.yg+c8tn
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 p:jlqqaig,: o4 ,/qpev osition of the ball each second is indicated. q a,: j4:eg ,qovp/qil
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 unicycle moving in a straight line is72wwzhuaz x t(di:0kbs 3wg 81 shown in the graph belowwdu bwzixt (w2z370s1:g ha8 k.
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 fjf3jnk( 3,nsjx vh09 circus clown on a unicycle moving in a straight line is shownj9fh,nj 3x0kvsf( 3nj in the graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacpk7+u ,a 3mpj(bogk;whvh q54uum 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 marble on a table top -2io fki0y8 hvfor 10 seconds. For which time interval(s) did the marble have ai k-o2 yv80ifh negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of a marble on a 0 v xuaokmv1 q7qj81x4table top for 10 seconds. For which time interval(s4v0o q8q71aj x1xmuv k) did the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a marc p3i +k/l4vmcble on a table top for 10 secp3ic4 vkc+/m londs. What 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 fropboy z+hu5-: nq8jhk 7m 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 strab(dvjfj d ag ,738u3gzight 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 t,r p,ye1u 2a m*s-dre((c *derkqn -cgraphs could correctly represent the motion of an object moving with a constant speeneq,,c 1- * 2*u-trrd kpydera smc((ed in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes the motion of a toy car acro(3ck4 pk+e qp caf /gmce+z-b6ss the floor for 10 seconds. What is thep6k - efc++abk4cmc(gq3 /z pe 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 des/wkk:s z+ a/)de vj(kqcribes the motion of a toy car across the floor for 10 seconds. What was the total displacement od e/w:kz(j k/q kv+s)af 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 tom2p*shjx2:y my(wg3 trl86mhy car across the floor for 10 seconds. At what ti*ml22hy8 j3rt(:m xh6wygp s mmes or time intervals 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 i wd:;yud8c*s ln 4.50 s. Which one ofcs8u*dl;yd w: the following 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 swn 1 (9sxzs.avhown. Which of the following statements regarding i nx(a .v9ws1szts 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 to the velocity versus r3g1)gep vl ehtp.+8ytime curve shown to the rightye rpgle v+tpg)18h .3. 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 tennis ball is moved ibex*a2;wms+-)qzo2: eo6e vs p0usw so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis balle qo ai* s vm;-pee)w62: bsuxs+wz20o 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 oth mzwb5h.:hq.o55btb w er.5 .b.wh5twmb5z:hqob
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 theqezuadx::d9au ;xpd.h b282p x-axis. When the acceleration is positive and incrx 8za hxd;.2p:u2a 9que b:ddpeasing

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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 veloci (l)gd*iq/ :sgixee +sty 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 thxev+a1f0qp o4e following choices identifies q1 vapqef4 xo+0uantities 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 movess;o5h t;w6cs msc8*ph $3.0\;m$ 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-l/- dxqk0fe c:time, $y\;vs\;t$, 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 tf/uyodq9ibs*z43kh 8 rc e3 e2ime T in twkou y ef3ebd*/ hsi9z 2c3r4q8o 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. t(9 -eu(kc c7 fv 0wbiq-mtryf8emv85yime graph for the motion of a car on a straight track is shown in the diagram. The thi8 9e v(f ye0wcmqmik f5tb(u- 8cy7vr-ck 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 carxp:kvcarh2m vv.9q)ji0 8t:u on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts at origxc. :h)qvtj va: krv8im 920puin $x=0$. 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 givej8d wc 6:.dzrtn by the position vs. time graph shown..cdjz8d:rtw 6 For 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 vb.+ 9yq ag*ln juk/fown0-z. shown. For which time(s) is the accelerat*-o/n +9nwl.kzquvfaj .0ybg ion 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 thewd g43zy q6a ;xnkv-,r area under the acceleration vs. time graph for a fixed time interval of an object’s motion, what quanaz v4gn d,wq6; k-r3xytity 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(,b58 jxgj /yy krurb0 along a horizontal 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 two parlfpc7( h9ko+b(yuaud9 a; 8rpts:
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 releasedwy4a-* 6) h4 vldchcgx from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reaches the ground in a time oni;6i .s715fsfg crg 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 alon( mko6p+usdj( azy8 f/g a horizontal axis is shown. What is the tozd 6sao8ykpmfj( u /+(tal 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 cl8g83wocw+x+ ce wq.yw/ j3fthe following choices correctly identifies all of the listed situayof wwxc+g8 3.+3 lcw8ej wqc/tions for which 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 along( kh)ix z. xe-7ftoef 0r8dgqu2xe7k+ a line is shown. The object starts from rest at time t=0 s. At what tii27 .ef)xdr+(0e-xxqe7u8kz kfgo htme(s) does the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity along a line (c 6-o,mcsk;ec23m9zpr p 1od 1jpxphvs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the object is moving away from the origi psr d-zohopc6kc3p ,92mxj1e;m1pc( n?


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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 ho.9h /jx.rodh3 r( ils2 idtzc5rizontal track, each with constant acceleration. At an instant of time, the information about the cars i ..h/ilj o3xihszr5td2 9dc(rs 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 positivap7hfd5 gi.s9, lm)gon $x$, 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)vxu2b:+qsb ild .,fy graph, which one of the following choices correctly describes the relationship between the average speed of the truck to fuld+i,yb.bsq x2v: ) 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 choicedree r5jmw,b15hq7jkt;h)j ,49 z jvws best describes the instants of time, at which the car and truck travel wik 1mvj thh)ejb;5zd jjqr9w 7re w,5,4th 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, each4cj xdto7y+ g d( o;a+lw-hn8u start from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown+xu(canlotw7dd 4j y+-h go8; . 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 moving ;u mj 5pfr8s(ton a horizontal line is shown. At what time(s) is the objf8ujpsr(;mt 5 ect 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 aft8 *dt(d9czx-axis following the position vs. time graph provided. During what time interval(s) dd*9dft (ac8ztoes the mass have zero acceleration?


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