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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 ciry h bdx.0 qy-svt6;.imcular 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 reference to a pao 7w28q(*m gqd y fs0a0,iya+s3sf5y)xuxlijrticular directi oa0wqaj3i(g7xsy)*ud +,5xmy lsf 02ifq8syon is called

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.29: A vehicle completes one lap around a circular track at an averal :z 84jp7zekf; rm.z8)vcwccfn t)6rge speed of 50 m/s and w tef4)m8 ;rc zpl7r6z8njzcv:kf )c.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 constant velocity. If it continnzp:e8 84 y m/rcgax:rues, how grrpay: zm4/xen8: 8cfar will 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 stationary on a 30-kg plazq/ n8 z *jftc5fknis1cmq3(1nk that is sliding at 5.00 m/s to the right across a frictionless pond. Thcc*zqtj zq 38ff/ 1(51n sinmke 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?

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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 );u 9ueb b::jrdc+ko,u;+hvx z0al vc km/h. What is the average spe0+ x,9:rlvkjuu ;+ucobb :zde av;ch)ed of the 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 :z;9bk 6s37ze* a yz fqkhozff,4: gdnthe motion of a toy car traveling along the x-axis. The graph shown below is a pldfz7enkzsbf y ;3 4hq :fzgk,az*6:9 oot 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-ax+9rp-kql2ksrd;h i,f is. The graph shown below is a plot of the car’s velocity in t klkrqh -f2+9ps idr;,he x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a toy car traveling along the x-axre m-d c c4s7ls/ihl4h.+qtjy:01 j qmis. The graph shown below is a plot of the car’s velocity in.sstle4 1h-/0 hqjmcd+:l icrq7ym4 j 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 )sei *h)k6wle 1lpzc88vblx 6velocity vs. time of a duck flying due south for the winter. At what point did the duck stop w1xl blec k)isl ph6v8 6)z8e*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 reyzy )3sg i*6gefer to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car during thzsye )*iy 36gge 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 theoz+molay:0 -0dge p0b4kt56tmgq f w) position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 sec-d0w mgka+)0p6o4fztb :qet5 lg0 moyond 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 fo05 rkdq: /yddlhag+x,r an object with the position time graph shown in h+qra:,0 kyldd x /5gdthe 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 th,pju*-l ,a*l(kbxz-nx )ha *dfcz xu0e following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its orp)*dzj xx ahb ulfl*xc- (*,n0az,uk-iginal 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 information. An ideal ewn, f )oc(q4b;zhy0melastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original hehn)o;fz0wy,m4bq( c eight.
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 travet 3eyyt-i ou2 b;s*y-wl 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 scenario: Ay580mi2tu0h n/a/ hx i;tgn 47pu*sasq4kt ydt $t_0$, 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: Atbkdt vyodz-+)f/ov-/ 0li5vf $t_0$, 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 fo8f/t3aj,xq v(v2s gr k4jp9z:l5,bdlz1yvprllowing 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 scenario: Atw (wj5 ftv)5fu8gu1iu $t_0$, 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, acro n64bxkmax c+3ss a horizontal table top and off the table edge. Which of the following would n+xm k bx6ca34best 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 relac jg.;de44sebi7)b p dtionship between distance and time for an object that is moving alongje7s).de pgc4 i; bdb4 a straight line. What is the instantaneous speed of the object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents the relationship between distance and time f:wdlo;:o gu2-z0h i xpor an object that io;z : 0d :hui-p2xwglos moving along a straight line. Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with a hv,4bs bcaak/cpwo7am;so o,;r/08bn initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air ro0 bbk; ;chr a7,wcsm8/,a4p v/bso aoesistance, 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 ,ixeu x(o iq +l9mndfz0z,2t2 represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from2zqzom,tli9x0 id e2 (f +,uxn 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 rest ac-o q1v.mye 2pnd uniformly accelerating across the floor. The time and distance traveled from the start are shown in e2 p.y q-vco1mthe 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 represensy0k* dnr(uxd b:z.j4ts a toy car starting from rest and uniformly accelerating asb*r d.z ndk0(xu:4 jycross the floor. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly accelerating ball. The )tmi-j n;xfveg*42e wxdm 08 xposition of the ball each seconxvxi28jdntw4;0)mgm xee f -*d 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 posi;)jdrsoluf7 +tion of the ball ea;+f lj)7sdrouch 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 circus clown on a unicycle moving in 5y87qiibe n*mj.qkp1:y+5x px9 gyow a straight line is shownq7gie5y kiynm1w y. pp 9qjx x+5b*8:o in 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 moviq)cakyfybw3pmsh1 4s8 o.55eng in a straight line is shown i .c 55eqmwapbf3so4s8yh k1y)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 a vacuum near the surface of the e6 d*-,3j 8qpokpi g3ubaboo6 rdvs5d* arth

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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 graphh0pjc/7s iu (c describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the mauc/ 0(jsp7i hcrble 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 m vws,xgvf8ws4 m1+ /xsotion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive acceleratfw8 vvxg4+x/m1s,s s wion?


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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 arbbouoz*y em) +(-,-zkgc e 5n table top for 10 sec o(mb e-ryze+c*u) gzobk,-5n onds. 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 a 7rpp053 q+phak f qbr4time 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 sp yjs/p390-.i s ezdjm gcv6z r/b/hmy+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 corrcjdoc/h:ty urz0 ) l*mdg353yectly represent the motion of an object moving with a constant speed3 3 0g)coj/y5 ld* h:yztcrmud in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes the motion of a toy car across the floorxtf m8a3-qoqaya( 5-f for 10 seconds. What is the acceleration of the toy caof aq-t-(8amyaf35q x r 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 gr;lld k)zs ) h2et0be5iaph describes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second interval showne)isl)z;k 5dthb l02e ?


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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 8m ir4*zk6uj6gzz;m, ljn*wbmotion of a toy car across the floor for 10 seconds. At whajkm6u z *;8 gzwj6blm,zri*4nt 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. Whi4;4/9wk+lpby b3b +mkn rv ilbch one of the following choices best represents the acceleration wb+ip4r439 /bnl byvkl+ mbk;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 veloci ysznyml) n83ps3i.q* 4 .sgfvty versus time curve shown. Which of the following statements rey.*zs sl 3n83v4 isp)q.fgmnygarding 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 to the velocity ve9y. + ;x3( qp3rpu 0cxysiwbhmrsus time curve shown to the rigi3 muw3.yxcqsp9rp0y;hx b +( ht. 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 angle bq3y ( 0qanykd 00jpqd4etween the velocity and the acceleration of the ball jd0a(4nqy3q0 0pkyq dis 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 automobiledq+)jw.ax 9u3o w o6hfs are 150 kilometers apart and traveling toward each other.j wh.qux3+ f)w6doa 9o
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-axmhrnr4:6ux 3qw u.qo;8 e( axmo(yvq9is. When the acceleration is positive and increasi:o8h mqnerr6ou9(4m yqv;( 3ux. wxqang

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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 ipz8y :so*12clk 3sr les

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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 dimensionnr7 dq8,n gss4s, which one of the following choices identifies quantities that must have the sam7sgn, qs4rnd 8e 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 move 7: -r 8z x9ns7 -dbhyhrlwh5hvbzdp;4s $3.0\;m$ 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-time, mj4lt7kk - ;+(meo fwc$y\;vs\;t$, 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 fo b1tva5qttzk oha5kgjof p3 0;m7t+-3r total time T in two partsf5ak +jb5a ok71;0z3 mph gt 3toqvt-t.
• 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 for the motion of a car on a straight trac3u: p7ze4r yl *+gt ybpfist89k is shown in the diagram. The thick line represents the velocity. Assume that the caylpz b*e p9r fyt3gt+8:i4 su7r 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 moti)jp ujax(eh 14on of a car on a straight track is shown in the diagram. The)e4x p1j( hjau 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 obf qqd7hk3 m3y4ject given by the position vs. time graph shown. For what time(s) ishf qdy33q4km7 the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by the velocity vs. tim/wik 9iziwm 49k:yzc 4e graph shown. For which time(s) 4cwkk : 9iziim/wy z94is 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 unmt3 mt8c1 dw1gder the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has mtwdc811tmg3been 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 speed.j. (y4 bzpigx8
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 pb5kq7 ,3s5l3ed;bwkug uc2 g two 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 gr7 my8 :vmz k1gzdx5upb*)ew* lound in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reaches the gd19wyfsx4q ;tround 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. tim1rw 4 y+3ggpjx o(flqq4un 27ke graph of a particle moving along a horizontal axis is shown. What is the total distance traveled by the particle from t=0 2o f37y(+gq4q klp4ngxwur1j 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 identinhgugmy2 8qpkep fmw8azl8z/ 8(5 *m0fies all of the listed situations for which there is a non-zero acceleratim(8/ g8nuz a kwylqmpph8e20 5f8 *zmgon?
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-+y g7q9ikhet graph for an object moving along a line is shown. The object sta yqk+-it9 7gehrts 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 th:gff3;aa;a(7ya m w0ib. b rase origin and its velocity along a line vs. time is graphed. Which one o:b;af;afbrmyi sgaw.7 0a3 (af 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 movinn0gji k(h:8s b-*do / dv4zheng to the right on a horizontal track, each with constant acceleration. At an instant of time, the information about the cars is shown:j nd/i( h8dez4-ob kgh v0:sn*
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 positio epvl*:s jp3/t9l8.e zc5 evls 2uw7lgn $x$, 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 grz8yv6bz(gw -a i/blh c6c67 vqaph, which one of the following choices correctly describes ti6qzyvw clz -b76gc6(v/h ba8 he 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 ins.t6 suw01bpo/1k-jrb bb8ye; m eh(jmtants of time, at which the car and truck travel with the sa-pbuy (kr;b 8w/ bsbm0jt.o1e j1he6mme 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 orl xm )wf/07shiigin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relation7s iw 0xmf)hl/ship 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 li0b5f+6 csokn5tq l-z pne is shown. At what time(s) is the o0pc nzo -5tlq5 bsk6f+bject 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 b( *:-qzjh+ ls(htvfkalong the x-axis following the position vs. time graph provided. During what time interval(s) -* :(qslvht(kjz+bh f does the mass have zero acceleration?


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