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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 constvo2w +wqd2/0lo prfgpt3b/n ( ant 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 without rz73yum+9 dwdp22 ng + fqcenj2eference to a particular diregnnfypqd2dcw29e j32+7zm +uction 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 a-c-md/re e/mlth9cyugo 4 b t95y s+1around a circular track at an average speed of 50 m/s and then completesy1ebml ta9 y5o4r+cg-t/dmh sceu-/9 a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 s at the constant velocity. If itq.zhup 7 a)6q8 ,meaot continues, how far will it travel in 3.0 qaozea p8.q mu6) ,7hts?

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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 plank that iv (hwu3kk4 hl6 o2d4/5bmxcn ps 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. What is the speed of the plank relative to the pond now? c vx42puhbk 4o6lnkdw/h35(m

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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 kmxa5g+;mfg5:el /ai *blaa r+u/h. What is the average speed of the motorist on thisear ll+u;ag:/ a + im*gbaxf55 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 z,ra x dqc8.)/rh;pi dthe motion of a toy car traveling along the x-axis. The graph,d;)cdqrar/.ipz 8xh shown below is 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 the me, ujz7x/a ih /l:hsn9otion of a toy car traveling along the x-axis. The graph shown below isxjezl 9/hn7hs /iu,:a 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 motion of a toy car traveling alonqu4x7pcgkqkps4a :eo;x 4m:/+f q*0nfsh0 ecg the x-axis. The graph shown below is a plot:nch4am*4:0qkp o+0e/k7 4x s fqp uce;xfqsg 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. /zp ;cqsxv gsl,8wd9bt( 3ds4time of a duck flying due south for the winter. At what point did the duck stop its forward sglxdwv/, sqdzb s8p3t ;(c 94motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which shows the position s/d66o9fs3kr7hzmg9) ifx r band 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 thir6sg/sd9ofz6b9)r3 m h r7 xikfd 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 belowg- llugne+i(; gt9k e3 which shows the position and elapsed time of a car starting from rest and uniformly atk llen9 - +ui;3g(ggeccelerating 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 ag2se:*f/ t0k pztjpg (n object with the position time graph0ptk2:jtg*s /zpfe (g shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the following infor- w usubxz1(13hfv-)0 jym6owfrn *tvmation. An ideal elastic rubber ball is dropped from a heigzt 0u(y116wb) *v rn-hufsmw3-fvxojht 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 refb-- aaa;h7keu er to the following information. An ideal elastic rubber ball is dropped froa;b7k-aehu a- m 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 aeoe2+mhq 8. .figv /gl7ioc/ x speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers tqpaw* pu3.pd)4kuoj8 9k(yko: t3uqh 3(ipg ko 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 refers to the following scenarhoazvhpdk*drf *i:z+0*af ;5 io: 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 reff ;jfi50y.ewk ers 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 the following scenari4pm) ugjg(xe/qwx ;t1+6jhj ko: 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 rampp;y-e,l;z yrupci jn99*ogm+, across a horizontal table top and off the table edge. Which of the following would best represent a graph py9jnp;zo*geymc- + i lu,;9rof 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 ti1wji;x j. :eoln b:vc4me for an object that is moving along a wj:nxc.l ;eibj4o :1vstraight 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 represm5djve m,c34 bg0twm1a-z9rugm+vf +ents the relationship between distance and time for an object that is moving along a straight line. Betweu0gdtbv495rmvw- +zmam c3mge 1 +,fjen 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 avne1q2 it1r )Earth with an initial speed of 1i)ra21t enq v12.0 m/s from a position 10.0 m above the 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 ;6m 6odzizj7xtoy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the d6z7;di6xmjo ziagram.
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 repdfs)) tw78hsj ra,o t b2bx4b.resents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram. x7o )8, br)2hdfwsb4t aj.tbs
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from rest and uniformly ve87.xoycagm 596lxo accelerating across the floor. The time and distance traveled from the c8yl7v5.o69mo gx e axstart 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 sho0y ;gqhryer 1/ws a uniformly accelerating ball. The position of the ball each second is indica0;ry ey1r /gqhted.
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 uni,)a nk pdqpwc:( ,kyoz x)2l9zfn 36ooformly accelerating ball. The position of the ball each seon,p3zd y na2l)opc:) f 6 ,okz(w9xqkcond 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 a un t0ps+*v-mq/ qc e4e5q+gfibhicycle moving in a straight line is shown in h5 0qet+pi*+cm-eqs4vgq / fbthe graph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on ax ,qv ;eb+p bq. ef k,(h7zvh6l9isy,z unicycle moving in a straight line is shown ie+7v ,ib,.;q,fl 9yxhz q6(vp hksebz n the graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in apbu r8: 3qsr3i 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 motljq-bvf 9fuvcd8/y -*ion of a marble on a table top folf* -du 9 jf-v/qbv8cyr 10 seconds. For which 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 graph describl y h++xpqj*(tes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive acce+tjp+*xyq(h l leration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a marble on a table top fo1 sojevw mr0f*.z53ojr 10 seconds. What is the marbles average acceleration between *rjmv. z51ofosjew30t = 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 timg)7sl3 gvkr d-e 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 /4kwq;e qles6 $20.0\;m/s$, 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 mot86p9n c5pnwydcag : e3 g-k9flion of an object moving with a constant speed in a straight 9kppny-a5cdc f9:3g8g6w len 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 o a+m-bgbmi564u e,gb1r6qrqbf a toy car across the floor for 10 seconds. What is the acceleration of the toy car at t = u+mqa6 bm- b 546grgr,eiqb1b4 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 the motion of a2oot c(b0*b5jkbe3 q, txbq+ s toy car across the floor for 10 seconds. What was the tottb 5 jc(203tb* bobsqo q+kxe,al 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 dex8r /b vhol7/ 1r9rricscribes the motion of a toy car across the floor for 10 serrrbr v97/o x/l8chi1 conds. At what times 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 in 4.50 s. Which oci y p(*r;/ofgne of the following choices besty;r c /i(f*gop 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 velocit0f*j c uv1 9cms2hy+jty versus time curve shown. Which of the following statements ruh*vcc0 j1+ jfs my92tegarding 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 ayl(r -a:dmpytba q- 8a9 wl)0pccording to the velocity versus time curve shalp aw l (--:ra q8pdmy9)0ytbown 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 inter1n(i . rw39vtrti(16ria wd meval of time, a tennis ball is moved so that the angle between the velocity and the acceleration ofwnw.3r9t i (6idrrvt(11e mai 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 kil*+uaw9yfxz f7ometers apart and traveling toward each other.7 w f*zfyuxa+9
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 acceleratio+52lo0w sa okln is positive and increa2oao0sw lk5+lsing

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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 veza; lesr+9p:n locity 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 )2jt 98ji.bf** exqrbb0 yatzdimensions, which one of the following choices identifies quantities that must have the srb)b80xfqiatj.y*j*e zt9 b 2ame 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 movrkfjpv(c+:3 +mv . rdses $3.0\;m$ 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-ti u 1d(4dip6ytkme, $y\;vs\;t$, 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-dig o:ow3eju0vdb*k1f 0mensional track for total time T in two parts. 1 *edw:gfo 3vk0job 0u
• 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 fo0 k8:qdfgxp, 5.r stsj.oy:psr the motion of a car on a straight track is shown in the diagram. The thick li 0s 5o.gx:,qp8:.rdj yptfsskne 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 graphgyjhj5v/iel t) * 5t0ff-cl o7 for the motion of a car on a straight track is shown in the diagram. Tht lff*ev hy)g50t 7-jjico5 /le thick line represents 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 ,;b0iz0 gfwok by the position vs. time graph shown. For wh0o0z,;kibwf gat 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 dtah(w 0:*hdm vs. time graph shown. For which time(s) is the acceleration of thewm ha:tdd*0 h( 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 graph for 28k 1jjwdya g9a fixed time interval of an object’s motion, what quantity ha19k y8 aj2dgjws 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 horiz/5)((bennij--p,knsj rhe x c ontal 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 )hf,tr3 a2f o( vw/udltwo 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 a tiks8vk t;cd/3d)vm d j(me 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 releas5g3/ qfhfa3ou u; (mqled 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 particle moving along a hord*z0dml919k bvdx9k cv u3dx; izontal axis is shown. What ilvx909bd31d ku9m kxcd vd*;zs 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 all of the listed /z3*qbmb kcuq0kw b)dr:: xv*9jm9fh situations for which there is* b/9m 9qjc *d:0 bb)3kxzmw kqr:fhuv 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. w4 /4efy)91chk6tmk sosx/ iktime graph for an object moving along a line is shown. Thehikk)y4sm f1/e 9kcowt4x6 / s object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and its velocity along a line vs. time is )rklsg5v+ved/d 7e(jx1)fee graphed. Which one of the following chol7vrfgd eee+/1k))5 es(jd vx ices best gives 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 .7ldw-6pjr6nv p u0j aa horizontal track, each with constant acceleration. At an instw66p nv7jdu-p0. r ljaant 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 posf9voy(tbqn)n1f j g74 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 thnh 5m49c)p pvze graph, which one of the following choices correctly dh 9v nm)pp5cz4escribes 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 fol oy**u69q5h9v+pnqht-kol t8yvx) nnlowing choices best describes the instants of time, at which the car and truck travel q nn*vhn5 q9p)tv 6kyoo+l9*8hytxu-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 move tz6+bw:k r2dealong the x-axis. The acceleration vs. time graph for each car is shown. Which one of the fotw b re:6z2d+kllowing 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 on a horizontal 1+u zr*iymc3yline is shown. At whcry +3*iu zym1at 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 gra21mm;lmb z1lns)g8 w )1cvwzv ph provided. During what time interval(s) does the mass have zero acceleramgl;w l1zsz)b1mnwv8 mv21)c tion?


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