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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 around a circular ukte t-g ej5mxtdu+:lgo61/(sej 9q-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 refervd7v s -brb; :+exngzpw3 -+i,gqmq a6ence to a particular direction is calle+ 3gz-;x6qbgvbr-7a+iq ,smpedw: n vd

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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 lahwg:5) w+d1)y5ke-j bzkhc oc p around a circular track at an average speed of 50 m g 5bw+:jkykc)z h5-)1wodech/s and then completes 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 const qgx:m ,( rl9-b5 yswii8,j.tk4u xhdgant velocity. If it continues, how far will it travel in 3.0 sw gg tq h, -:sx8u .rm9l,idy5kxbji(4?

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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 stationarl*ykzgl6s2 wokw491 cy 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 m2o1l9lwk*z6kw 4y c sg/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 trama as2zbvafd*b5hu- 1z1n +;c v;ed)cvels 400 km at 80 km/h and 400 km at 100 km/h. What is the average speed of the sa1 a;ec;bbd- zvm+ f51udh*2 vn )cazmotorist 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 toyp .z7 t)u/xrjrvien (: car traveling along the x-axis. Tpxzv7i)rrej tn /.:u (he graph 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 motion of a toy car traveling along the x-4mmx*v8iv2:au) hzda fn0u x)i8j us6 axis. Thim)u2v64mu 0i: sf8v8*dxazjxa)u nh e graph shown below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a toy car trowf;, esnx tfw93wu7w:;a pi x,(y*hiaveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction, w :eaxpfn wu;fs,;3,to97yiix* w(hw$v_x$ 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 due7e 1ailmeu0fm nc r(6i9xeeil7x51 n+ south for the winter. At what point did the duck stop its fol 7n57a men901+lxxmii fe e1 eu(6crirward 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 thes ckq88r(ka/7v w*bae1xt6 t s 9o+sam position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was abs(7v8t* a omxa8we/ kq+1sk rs9tc6the 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 diagpk0sy 77/asq * yq)cciram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The averageia7)q c*yqpks /7sy 0c acceleration during the entire 3 second interval is closest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time graph for an object with the posik 1tu,ep,g: sition pes gt1,u: i,ktime graph 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 informatkv)5ko3 n yl4e ;e0h ;mbwkws.ion. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the.h3)k es5ykw4 0ew; obk m;nlv 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 my38acsrc v ,m 0cb2lmj34 w1ufollowing information. An ideal elastic rubber,b3m v8c rmmc1yw aj lc04us32 ball is dropped from 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-4 tuh52smpwi travel with a 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 scy-t 4n4kv;h:f o43 hd4-nob iw gz+fgnenario: 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 x( qw6f8sbbl0 1o;fgethe 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.
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 uat l1bab99q,x34/c6 0,g yx dz1x woau6 ntvpto 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 ti f u pf:3xom0h+bh)9mhe 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-d :j 7b f,mawo/o;tdq a ramp, across a horizontal table top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's fbqowdo :7/;tjd m,a-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 relation+h09 i6rxmuqh qidl)vy5z,7wship between distance and time for an object thavmiiu qyrhq9+6dlz5 ,0)7 hwxt is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents i.kr ji0z a6 7xnojc73bw:0qmas72 zdthe relationship between distance and time for an object that is moving along a straight line. Between what times did the object have a n77qid3rbko60acz zs:xnw 7 j2 .0imajon-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 g-wykv2gt1ilelwpe destk4+ 9*9 z 25 is thrown straight downward on Earth with an initial speed of 12.0 m/s from a positioy2-lgzvg4w 95i k1pleetw+dk2et s 9*n 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 re(ztaa6a v4t 3ypresents a toy car starting from rest and uniformly acceleratiz(43 6aa avttyng across the floor. 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 below represents a toy car starting from/ lx:pis5d12 js5x wfe rest and uniformly accelerating across the f/5 21pjes s5x:xi flwdloor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from rest and uniformly ah2ww5q - wdw)wcceleratww5)2h-qw dww ing 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. Th07tuakij/dtw 0iy:;oy s 5n)te position of the ball eacht 0itty ; /70iw: ukjdyao)sn5 second is indicated.
What is the average speed of the ball between 3 and 4 seconds?


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly acc0/q+z(7 i9rybbwxj9n tm( .vvvj1qri elerating ball. The position of the ball b/t7vywxrqjvq9jv(9 nr+0ib1i.m( zeach second 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 cirlj/ 3pol3ku pp5pa.v-rsl 5 +hcus clown on a unicycle moving in a straight line is shown in lka. ls3- u5+p pv/p3porljh5 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 linep e (r aav4-:b25qdoqoi wq54e is shown in theeq5:pwa2bo4a5 q dre o4(qvi- 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 vacuum near the surface of the earth 6 wvt5hbqi+v0

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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 of9gj d2mp sq4a7 fggt) wqby4o)*;z7cy a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negative velocp;fy7 o2)wtzgqjmagy c* 4) 9bdqg47 sity?


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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 table top fuq 9e7 e,zvm f)ay 91tfupgh)5or 10 secofetymg 1z)7 9epqu5,vau)9hf nds. 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 grap*. otn c5fl+ms)br: 9kngjai8 h describes the motion of a marble on a table top for 10 seconds.b cafrigk8on t*mls:. j +59)n 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 from rest for essrw7r jy j/l8/7h9 ga time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with a speed of( a;wiuiu5y g*8do3ov $20.0\;m/s$, 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 motion z9-(a fcw6fq8a q ds4+x 5drpsof an object m6+ d awr-(95fzpcs8fq4sxadqoving 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 descfq.4njqsd/pti1 5;27d u 0sb 5zw ybmhribes the motion of a toy car across the floor for 10 seconds. What ihb41/s bf utdwjqm2 syq n0 5.iz5;dp7s the 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 describes the motion of a toy car across the floor7 ajkfmt9/)r b for 10 seconds. What was the total displacement of the toy car for the entire 10 second interval m7j)t9rk af/bshown?


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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 the2 e ggk cyn8n+wk-tl b5+ra1k/y 6ph.j floor for 10 secgapnj c /htenkw+.y6+5k812 b-l g kyronds. 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 06dgm4 -v)e)2euv j pmn km/hr to 60 km/hr in 4.50 s. Which one of th gnju)6vme- ) md4vpe2e 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 shown. Which of the following +nkuijwn()tol3 r7e. rfh7j 6statem 7wi l r) 6tjjehuk7nn.fr+o(3ents regarding 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 according tobtv d, 4aq)jy* the velocity versus time curve shown to the right. When does the car have zedtbj *4, )yqavro 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 tiliwc23/fqnll);6 r y eme, 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 tell);enfi/w q23 c yl6rnnis 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 tr-1od b7j9kphfi0: vc laveling toward each other.vcbd0phi :jl7f -9 k1o
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 acceleration is positive and ig-*ib56m l2t sayu )qh mc(;jsncr); *ghb 2summ5tqlj (i6-ycsaeasing

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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 qs09u*7k+slin6s o xzty 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 *fmfotop0 nq,a wuc+. (5/0azf zxmgq0t*cv+two dimensions, which one of the following choices identifies quantities t fuq0v t+z *0f 0(cf* /5,m.wotqanogx m+cpazhat 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 moves)o9m4 xo 0q+c) d q:o1aq(e.attl mxgy $3.0\;m$ 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-qzd zq+e8ds7e0p:k5f0e 9om wcguy8o cn14 :ntime, $y\;vs\;t$, 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;ex yx1hei*(hua09ut the right along a one-dimensional track for total time T in two p9u( 1 eh0ayx;exh*u tiarts.
• 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 l l,1so) :rzv(dvby(xgt o5s+graph for the motion of a car on a straight track is shown in the diagraooyl ds+v :)s(l(g5, vr1txb zm. The thick line represents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the motion of a car on a str4 opp .paed1ocz -;.vpaight track is shown in the diagram. The thick line represents t .oc 4z pepv.p-pad;o1he 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 motio knb0y5h:;sazg/ok) in of an object given by the position vs. time graph shown. For what time(s) is the speed of /n;k5 bgi0ayzko):hs 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 give1u6f*q oj dcs)n by the velocity vs. time graph shown. For which time(s) is the acceleration of the object equal toqdsj1o6)cuf * 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 a fixed :xqfbkxts4co4d3 6ow8nb)0j s - eli(time interval of an object’s motion, what quantity has been deterx)( :ct xidjsbfokn06 4 l4qsbo8e-w3mined 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 speeg11l6niwpft d/bn hg61sin 15d.
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 xk f g178(iypen*tue/ 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 h /fnfhllp 4z*m6)a9mthe 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 objectft-: ujsl*1k+ny7rmi9l st*d4fe og4 is released 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 parteve9bm8i8/dlltp nq (b9e1d-;;b myv icle moving along a horizontal axis is shown. What is the total distance traveled by the parti9ytve1;/d8 qndl- ml;(em 9b8bpeivbcle 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 id7(7iuzfm smek2z5cu -b2;wno r/mjj :entifies all of the listed situations for which there is a non-zero accub(: m k/r27ij zf n2m-7moseuz;5w jceleration?
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 moptsit 81k4q*q1w(xluving 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 displacep luq(14* tqws 8t1xikment 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 sta-e uxim3 p98srrts at the origin and its velocity along a line vs. time is graphed. Which ur3 9- eix8spmone of 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 f 5ii5ec9nal/track, each with constant acei 95 nlifa5/cceleration. 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 hase: x 1e)*kzq4b( cklnc a position $x$, as a function of time $t$, given as $x(t) = -15 - 25t + 10t^2$. Which one of the following choices represents the magnitude of the particle’s acceleration? All quantities are expressed in base SI units.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.41: For the entire time shown in the graph, which one of the fo0;su .6la3xbwu9wcc pllowing choices correctly describes the relationship between the average spew p6w 0xs.aublcu3c9; ed 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 det2:pux2 *cado scribes the instants of time, at which the car and truck travel with tox2ud2: * cpathe 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 gj -fdd3; u4r6scwnm 4will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one ofjwr 6cn 4u -34;dmfsgd 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 o1 2pnmvj;0 rqmf an object moving on a horizontal line is shown. At what time(s) is the objejnp1qv ;r0m2 mct 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 followig:wc: (dcai 09c pebtt v tug)/au(5g3ng the position vs. time graph provided. During what timea g:bc vpg)3uwat:ideuc(ct 59t( 0/g interval(s) does the mass have zero acceleration?


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