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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 constant speed around a circular path of radt g k kk,6yh9g;i;u9gqa:/f(s b +rjiuius $R$, 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 r5ugv, /;gxp v y( *h;itrsh(oqeference to a particular direction is callvihgg , p sh (5toq/xyuv(;r*;ed

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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 average speed xjz6(q*aifus4* :dc k z:a8zf of 50 m/s and then completes a second lap at an average spe: k6fcaz* d 8zui(qxs :*4azfjed 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 velocit- m7yk ;s3vc: :,b urdqpb0vray. If it continues, how far will it0r sd ba,u7:;q v:- vpbrkcy3m 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 stationary on a 30-kg plank that is sliding at 5. yzji s7 r)b x 4yuti0to8-/g;z1zsbo000 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. Whabttr-7ji/0o4iy)zu8 oz;zgx s s 01byt 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. Wha2bj+ f 8aia.iut is the average speed of 8+bai u.j2i fathe 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 owyb+m 4u:fy .iht 2zw,dw- v)the x-axis. The graph shown below is a plot of the car’s velocity in the x directiw .)tv4hyi:u,yw o-z+2mw bfdon, $v_x$ 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 tradurzc7 9,u 7l-8 u4zzvv :uuxlveling along the x-axis. The graph shown below is a plot of the car’s velocity,rz 4llx7u:c v-z7 9u u8uzvdu 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 ca xw5h qajw.ehdri67 (ykfk)e3xut /2,r traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x wj5yu3 h(7/x,ekiktwqhe 2 r6)d.xfa 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 duck flying dukf, mgm-e, xm5g2l,r se south for the winter. At what po,f,- k2lxmemgr s,g5mint did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which shows the positionffceu 2*bg 4-rrnh15z and elapsed time of a carz nr1cuf 5bg* e24-rhf starting from rest and uniformly 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 diagram lw/ wmz: 0(6t p51ogihjo*ss h3uhrq;below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during 3o( u;lrptszwi:j0h*hswmqoh /51 g6 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 thcwfy0/ jw//pre velocity time graph for an object with the position time graph shown in the diag fpj0/wwc/y /rram 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 tzzl7ro eo9n(i;ou r/0du-s o7 *reja;o the following information. An ideal elastic rubb r7 o*-uzuio ao elr(7/dn zjor0e;9;ser ball is dropped 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 quest tr0sbr+pj f3sm343odion refer 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 he+3sdprbrj3o0ms3 t f4ight.
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 speed of o* bmnx9r5f6fa,nixsqy9/ejmm ls5 7t3ul0 - $v$ 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 following scenarm(0 3 tkqb9lrio) hw5sio: 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;dnhz*qc;m /w: 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 refeo7z fhgy,ar;;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.
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 refbp(lg( v9zk; u ayd,jkh0*8 kxers 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.
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 b8ww6iia9dskd2( 6pdramp, across a horizontal table top and off the table edge. Which of the following woiswd 8d 626ak dp9bwi(uld 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 gl: t+ak /pmcuh(ys8h ;o0ta6an object that is moving along a straight lina80/thoy;ckg t p: (a+ smluh6e. 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 represp ccqb/9ju 3uzsj. l62ents the relationship between distance and time for an object that is moving along a straight line. Between what times did the obje2 c3jpq z s.juul/96bcct 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 ul(r8kr1o4e o;av z ce0xd 7 xr5w)+hzis thrown straight downward on Earth with an initial speed of 12.0 m/s from a position rx04vro7h+ex ;czd)r k 51az 8oew(ul10.0 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 toy car starting from rest and uniformlye0h,- v*k jkbk accelerating across the flo,-0 kje*v kkhbor. The time and distance 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 belox:,hp)ms3l+ra x:u www represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance trl ::+ 3 swrmuxxp,)whaaveled 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 repwv p. r khsp8gl* rv.6ngb2:j.resents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are showj pk 8bw2ng sl: hvg*6pr.rv..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 unfic+o /;)ajed3 hy 4;lye vi4oiformly accelerating ball. The position of the ball each seco ahv);/ c;oeli34 +f4yie jdyond 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 .y y pt3gycx(:uniformly accelerating ball. The position of the ball each secondg(p.cy: txy3 y 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 unicycle moving in a strac *q blblord +er5ft3:4r0ph7k+ gxn/ight line is shown in the graph below+x go54:rfn3rh/l+ k ectb0 d*blr7pq.
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 circuss esv1d,:f+,,g oj1pi91hdpv asa1ny clown on a unicycle moving in a straight line is shown in the grn1 s1jh+ fa so vsd,g,,yiep1d :1av9paph 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 near-xls puqgdze08m:.6c 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 omhn osdt+ , emk,)2wx8f a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negatx2no d,sew m+,m8) tkhive 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 grap 19xtfd-z1c0 s(,i1obnk clh xh describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a pod( n- k zlcsxf1t1bi cx91,o0hsitive 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 marble on a table top fhjy q4js /e q04n0gx:yor 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 he/qjqnsy04:j 4gyx0 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 t1rnz1 35vphd3xaj ik2 ime 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 spi*uu4hubiwtk2w *e * ;eed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the following graphs could cwg res- )b/q 27ptpe1qorrectly represent the motion of an object moviw/e tpb1 grqp-7 2s)qeng with a constant speed in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying eqgx;, w+av5 8a);xn)bpehgd graph describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at t =qe,vghx8;nb5ad)e +) x;w ap g 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a tojcn; z *39ebgjy car across the floor for 10n*zgcj; 9je b3 seconds. 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 accompanying graph describes the mge/rz:zox djs(c + v )b0l9an-otion of a toy car across the floor for 10 svlgna0/z( )rsecz : x-odb+9jeconds. 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/hafe3h 4f0:a8ptb 0s mmr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acf:3pb t0asfha8e mm04 celeration 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 showjlxc f2 d5c iq*i(+q5rn. Which of the following statements regarding its motion is NOT CORRECc f5 qqdxi2(*+ircj l5T?


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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 velocwpr3akgc npna)q) -/m h1/uvr55u n1iity versus time curve shown to the right. When does the car have zero acu5hu-apr )5kw qmnv)n1pnacr //3ig1celeration?


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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 o*,bv1 q 6xrpycf time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the vbc61rx, py* qtennis 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 aqmf +f ouv4h;e(25d*g1ct*a( tpeedn nd traveling toward each other.o+ ev* qtuh n 2*(td41ad;me5pff(gec
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 ajgtq::uls( -k.n(v m occeleration is positive and increakl :.ntm ojs:u(g v-q(sing

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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 velocity ia+c *djm:pej .s

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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 fo3s+ly 4ya)zgv xh,g 0ollowing choices identifies quantiti +34ogy),ag xvlhyz s0es 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 movun1 m2 ndbv0m8es $3.0\;m$ 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-timqp ,4/f5rqvc de, $y\;vs\;t$, 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 timedp 9v/),fahcd T ind f,/h9acpv)d 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 fofz00w 4k 2qmzzb0w3 ) x-gaglh9rd-obr the motion of a car on a straight track is shown in the diagram. The thick line repqw0r 9hfm04wb2-ogl -xb )3k gzzz0 adresents 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 th dagk-7q k1nb 5gt.4jve motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Asa 45vtqg7 k-ndj1g.kb sume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the position vs. time gtc9wt :t4pb k*raph shown. For what time(s)4w tbt9k:c*tp 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 ajkk)ncvhx48m8* qa*b 1yxi (nn object given by the velocity vs. time graph shown. vybhnk 848mxqa ni(jkcx)*1*For which time(s) is the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs.v2 z h 0f2ced*xoujp81yqy72e time graph for a fixed time inteq*e2heyzxodfc7pu 08yv 1 22jrval of an object’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 horizod: me. 8rago9w 1d664i tbhdchntal 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 )6+zrf-* 6.y k6kf uhjc uioi/t4bktytwo 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 fro0ltjq -h 5tdl lt fxmjji9;qg;s88p9.m 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 reachess*50 d1 3yps2yqw lrlp 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. d5-9k3kjw uhv 3ty:n:;r,zkl teuo4w 7xua ,dtime graph of a particle moving along a horizontal axis is shown. What is the total ya:h4-9xw: urj5nv z3,wkoktue k,td 3 ;ldu7distance 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 idebpdo n*( 3cay1ntifies all of the listed situations for which there is a non-zero accedc b pya1*3on(leration?
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 movw-cefuo pd.w(c (64w a49tmas 4 gx8xping along a line is shown. The object starts fwp4dcw (gtswf a am4px6ox(49 .8u-c erom 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 anv8g eg0w4m(k:f d/ g3svwho ;zd its velocity along a line vs. time is graphed. Which one o g(k g0:d wv8/hvm;wf4egzs3of the following choices 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 a horizontal tag h(u n+++tpprack, each with constant acceleration. At an instant of t +a(pnhpt+u +gime, 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 po 2r/th* rd 05-ret4tiaudwf1p sition $x$, 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 thbs 0y x42gon g:ud.c/ve graph, which one of the following choices correctly describes the relationship between the avg/dc0v su.4oyng2 bx:erage 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 01dum( iy u;tvthe instants of time, at which the car and truck travel with the sam1u di0ty;(mvu e 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 orv wmq5yq9o x9 9+i,ryh2 h2ouuigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following u9xy,2u5o2qr o+w9vmi hhq 9ychoices 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 line u*)n hxswcd4q77aom 1sw i 4 r.vv-/ubis shown. At what time(s) 4 1/4xvsm7h) urd.u-ivocb a7qsww*nis 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 lu jte 0i3 ;y22rj(kdythe position vs. time graph provided. During what time interval(s) does the mass have zer kr(iej yt2;0dl2j3u yo acceleration?


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