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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: 匿名未登录  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 8b44vk .kgaxew1u3mm 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 pervmt6 ur mf85c 560j6myh hwp/g unit time without reference to a particular direction whh mp/65y8 6grvfmtu6 m0c5 jis 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 laody1grm0;( vvx+f+tgp around a circular track at an average speed of 50 m/s and then compf+d1o tmg+vvy;x rg0(letes 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 velocixr4aj m, zh8 ggsl9/:uty. If it continues, how far wlagz8gh jrux4 s/9,m:ill it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stu,x*gg x5 dfn:5ks/fs ationary on a 30-kg plank that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speekg*df ug/fn, xs5:x5sd 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 ks6+ dw8 gsv5gkm/h. What is the average speed of the motorist on thdvk 5wg8 +ssg6is 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 to7.koek obxzsh3(:fx p28g) bd the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direcg3 osxkk o)xph2 z:e df78.bb(tion, $v_x$ 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 ms-:)xwfm:blm otion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,s :wbm-xm:lf) $v_x$ 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 trab:n-oha5p(g17 bwm bfveling along the x-axis. h agwb-n7 ofbb (:mp51The graph shown below is a plot 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 veloc. d i* 3lr5/gtcfqr jj60phrd)ity vs. time of a duck flying due south for the winter. At what pohjr3*g. d6irj rcq)ltf/ dp0 5int 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 shs1 o koxci,xsp g1a8 ifh 5v2kl)m5v)7ows the position and elapsed time of a car starting from rest and unlkvix58 i1, ko) )vhpgx o25s7fsc1maiformly 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 below which shows the posit+a31dbb plqd d3ypo26ion and elapsed time of a car starting from rest and uniformly accelerating in a straightdy 3l dppqa d+3o1b6b2 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 velocitlxsur gta j7le0 -/-3yl9bwp8y time graph for an object with the position time g g- eu80-psr 37tba llxjlwy/9raph 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 informa 3uhjwe xn, d4g7jolb+8-l,:h0p 8cnaojdv+ation. An ideal elastic rubber ballpadju d + h7cljjbwxhnla8g-0v,8 o4n3 oe,+ : 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 question refer to the following inh3nk(: dpk+maf +wvs5formation. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the ffsn+hakw d53+ pk( :vmloor 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 xh-;yxk 1*zbya 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 to the following scen.e unbqq6sk5( ario: 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 followixv8u2mvpltn1;v4d iei t8e d 8d gg18;ng scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following j oatm-zy2:43jgp9/f :5 hjdjtk6k gc 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 follol7r; +3o1l;dycnc;m o ,g wbkqwing 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, acros 2wi. mcx5wb/ks a horizontal table top and off the table edge. Wh5k.xbwcm2iw / ich 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 relationsw*b jhagthomb/z 1h7*hf9sd0 rqds+oi6315fhip between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 seh*o ob31h65dm9d7w /fqhfiah +1tj0zs* s r bgconds?


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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 distance 7hp0d+2e* ak5 le qcajand time for an object that is moving along a straight line. Between what timeead p2c*5j+qalk7h 0es 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 Ea4nt30c ,j l(nkjdgydu( y ;9hbrth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when igk n,dj(ln u hd;y40bc(t39y jt 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 staldtx)i;erygr vz-f +8mwi)699u r .znhq lo5(rting from rest and uniformly accelerating across the floor. The time and distance tdx o + qehl)urfg.- )5n;y9z6 izi8 (rmlwvt9rraveled 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 fro hf8kesx b+u5e;v9hn)m rest and uniformly accelerating across the floor. The time and distance traveled from the startsnxk8 e bvfh;)u +9eh5 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 repreo0pn:11 k vrldry/8+ lbs 2ciisents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start o ii ld+bn 0r1r82y:1pvl/cksare 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 positionxli:2198ypbc ui x.d w bg4w.v of the ball each sec c: ibi48px.wx1gl.v 2u9bdwyond 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 the om-k. 3q/llhiball each second is indich .3lq lo-ik/mated.
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 moyet;rjhitw/ 8 mx;ez9 iz-o43ving in a straight line is shown inohir/8;itt-xewy43j z9; zme the graph below.
What would be the acceleration of the clown at 5 s?


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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.18: The motion of a circus clown on a unicycle moving in a straight line is szfzz 5 ve 04i*64 ,ugtugi8ky1rrqz9rhown in the graph below. z,6 rg u 9 zzr8f40rkqvty 4uiei*5zg1
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 tvrty x(2+9wrin 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 marble on a tvn* 9*h,o/m uhx yhy0lable top for 10 seconds. For which time interval(s)huh*l y/o my hn,0v9x* 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 describes the mocgd.:k trms zm,),k*j tion of a marble on a table top for 10 se ,tgmmkdcr,j*skz).: conds. For which time interval(s) 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 marble z ,x,q szfjg:al-1c,ton a table top for 10 seconds. What is the marbles avera-1fzq ,gxz,,a :tljcs ge 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 acceleragxla4 -8d*x1 bgoolmf) i- v+qtes 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 s bnreb-n:mp8(5 vzve (:jwy7s traight 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 graphs coe3fy e8*n, ywluld correctly represent the motion of an object movinfey3lew8,* y ng 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 graph describes the*1) zlgmk n x8ysjl;6y motion of a toy car across the floor for 10 seconds. What is yj8m1 6lx;nskz)g y*lthe 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 der3a5clyo/v * n 0+v3zaukzz0nscribes the motion of a toy car across the floor for 10 seconds. What wl0vnyv a/3 30z*a rzznku5 +ocas 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 motion of a toy car across the floorjgov/ij )tn ;l(ynk/9 for 10 secon y)ljnnk;9vjoi /gt/( ds. 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 wv(3d:x8wsa s (12blhxx ff j860 km/hr in 4.50 s. Which one of the following c(slx(3bws88 d1hx:fx2a jwfvhoices 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.uksgn;2 )g((ha; johx Which of the following statements regarding its motion iso (a; (2;nk gsh)jxuhg 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 t 6*mrtlocj,q)k w 10ssv7pvh7ime curve shown to the rivlpk qvwct7h6 s1 )jm*07rs o,ght. 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 so that the e,b;zc 64yuaf2rf1scq/ ;hy aangle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the b6;/qe1a c ycr,fyshf2a uz; 4tennis 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 travelinsgbvh*glh (g((;j w6yg toward each other.y(gg h(6w b( hsvgl*j;
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 theddns4:pa64n1 szxcb qr8/g53a 3f wzjft2x(i x-axis. When the acceleration is positive and incrnaz q 34aj4f z1gx2wdir s bpf5ds86/:n3tc( xeasing

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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 velocit2t o53 h sn:rs28uvv/pkszrb-y 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 following chq.*c5 p5ngm(hlb k*k ioices identifies quantities that mun *ghmp likq*(b5k c5.st 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 moves 6r q -; mgtt;jzlhr1aiyp 4x;3$3.0\;m$ 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-timvh:6/v;tr5smbo bxe hhl g/jji1(6 xh7xum/ 3e, $y\;vs\;t$, 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 fn9 - 0q .abeg6m3lfysbor total time T in two parts.-.b nb9m6gase q y3lf0
• 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. d7si0oe0m j pyf 302dytime graph for the motion of a car on a straight track is odp020 y0sed m3ijfy7shown in the diagram. 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 the96phbisuledo25t ;hm y 17d7 b motion of a car on a straight track is showt7dy ohm sbp1el;i259d 67h bun in the diagram. The 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 by the position vs. time)/1-ximxmd xwjsxt- is 9s+r9 graph shown. For whi sd9stw- /+m j1mx)x9xs-xri at 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 g jy+m,a/uk 8g .ivuv4the velocity vs. time graph shown. For which time(s) is the acceleration of the object +ig84vkuma./j ,yvugequal 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 v:h)p inhx ,*izmz,7 kfor a fixed time interval of an object’s motion, what quazhn,)7pi, xv *m :khzintity has been determined for that object?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object moves along a horizontal line with increasing spee)i gse g:f:crzgpd+ )syh8iwt,g03: e d.
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 par( lgs3 amx213k(nhozx/xtvkro, +gc3 ts:
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 reache * hwrzw1t6u:liphz+il( 3e1as 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 -* q eaw-eq:ibl4wts-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 aix .j02* jqlrdp .6cr.6qyhh ,hmr2jmlong a horizontal axis is shown. What is the total distance traveled by the particle from t=0my*r2 qh2..d ,qp 0xrj6h6imc.l jhjr 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 corru/k kuzpjhp 1 6f*6hx-ectly identifies all of the listed situations for which there is a 6 1pp xujf/hkh-6*zkunon-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 3a))fxmvjl42r hw x0t along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum dispax0)hfvm4 wt 3)jr 2lxlacement 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 the2vxdlnz+, h9 x+z9.p 5h zggmc origin and its velocity along a line vs. time is graphed. Which one of the following choice dxn2+z l ghxc .+,vg9pmzhz95s 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 tk1evy;use)1m*xo*q a he right on a horizontal track, each with constant accx1qu;)ovaye*ms1e k* eleration. At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a position* o t)(7cqxgks $x$, 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 tb(w177skho lcs jto,o8 v3( mphe graph, which one of the following choices correctly describeho 1cjssk, (om7(t 8pvolbw73s 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 following choices best describes the b) r(e1nxzzotzbr 7-2 instants of time, at which the car and truck trav(x-z1trb 27o rn) zzebel 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 frm. yjmfr7 q6w3om rest at the origin and will move along the 67rfm.j3q mwy x-axis. The acceleration 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 cgt3g e o))gx+eirf,r(rj; 4d an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatest gxtgecd;f) re r+4r(, ji3g )ospeed?


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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;h54 rabb+lvk the position vs. time graph provided. During what time interval(s) does the mass have zero acceleratil+ 4hrvbk;b5 aon?


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