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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 circbz,87 +* iobvhgdxj 9eular 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 part*g ywfl2on(l/ icular direction ln/ *(l fo2ywgis 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 average hy5kaq cgn;0) speed of 50 05 ;yc)aqkhngm/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 tm a2+rp qj l97s3zxk3dhe constant velocity. If it continues, how far willzk3x d3q9rjp+27lmas 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 plank that is sliding at 5.00 m/ ea rbvm- 8mzrx30eh:4s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a v zm ah8m3-r4e:er0bx 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 km,lvgr d p2)lv,qig.8 x/h. What is the averagi .rl2 g,l 8vv)gd,pxqe speed 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 the motion of a toy ca*l0qy+tsdl cg4t 68tk)r 5begr traveling along the x-axis. The g t6t45kysr0l*+b qe8ggltc )draph 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 referso0x-f-:+ j1vzsmau mp to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity zoa 0-uvfp :mjmxs+- 1in 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 motib1z1agb 4:jg son of a toy car traveling along the x-axis. The graph shown below is a plot of the cbagj: z1sg1b4 ar’s velocity in the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a duck +xkkq6ps i,; eflying due south for the winter. +pk;,xi esk6qAt what point 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 whlu/5qh b z*9ca gh d1;qwbik(0ich shows the position and elapsed time of a car starting from res1u5qh/ zkg*l aic;(db0 qwbh9t 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 below which shows tekf78 )jq*xuc he position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the ec7*xek)qjf u8ntire 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 sa:)zm0 xt0peck.vonw* 0n2 z for an object with the position time graph shown i0k.cs00e tmzo:n p)zax2 n*vwn 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 information. An id*srzqoh/u,uz+ dd r84eal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its origin/s48uzddzr+ho * ,uqr al 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 informat (xmqpig54 n+gion. An ideal elastic rubber ball is dropped from a height of about 25+mg x(nq g4ip 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 canryimop / 8-c5bps1dcwh:h)h ha67 6ct 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 t1ejbg4f)szk a3k/d z6o the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refer/*y:y/tnq urlf67 j4 q)/kfqugn,b vds 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.
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 scenario: qkfx4j3e6qr1 (zm,h(e8 a 5mg nnrwq9 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 refertqy:jtw;j, at;39 /jnw3 giqrs 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 ramp, across a ho 25hm avac.,lrrizontal table top and off the table edge. Whic5,2cah rlma .vh 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 thney)/ 2m-xrqe e relationship between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = mr/x-2 ne)qye5.0 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 r9ka orct /m7a5juml,2 cw1c6distance and time for an object that is moving along a straight line. Between wh ctk2ur rmw 61ja5o,l7c9c /amat 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 an initial v epp;mj,h3-espeed of 12.0 m/s f v pejm3-hp;,erom a position 10.0 m above the ground. Ignoring air resistance, the speed of the object when it reaches the ground is

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.11: The diagram below represents a toy car starting from rest and uniformlm +p s,a;7n24uuhokeb y acceleratin2; ha 7o4k+bs,mnp ueug 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 rest (3ly5ffr z 7.m/-rm hjnk,jzs and uniformly a,fyn 3k(s.fml-jhrzmz/r 5 j7ccelerating across the floor. 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 / da( h,3uhnrls 3wl.0oonc5jrest and uniformly accelerating across the floor. The time and distance ,sd3n/ wj5h n (oouhl3la.0crtraveled 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 position of the ball/ k3;rpgy,yes eace g 3rk/s;pyy,h 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 accelerating ball. The posi1ocrt9c veo 6n .iq5n:;8mpl 3t xsw6dtion of the ball each second is inditt mq evo:3onw6r51n6;9spl xc8d .i ccated.
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 straight l3d wto /.mpu7fine is shown in the graph belo fwm./37odpt uw.
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:l3:- dnqgv.r/7kwbvesez7 z a straight line is shown in the gr/3erlv:ge 7 d wz7qs.bznkv- :aph 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 fao,43njn8snk zlls freely in 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 m75oqfom8dx3 l( v9 quuot3,jdescribes the motion of a marble on a table top for 10 seconds. For which tiqjm9mq f3(8tv olxu7o u,3do5me interval(s) did the marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanying graph describes the motion of a marble on a table l(g x l8sm8p2 vphv-5btop for 10 seconds. For which time interval(s) did the marble have a positive accelersl mpp-8v5b 2hxlv(8gation?


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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 motiue; ) us uo6r5)4wyxk kngne. y97i8kton of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s andnr)u679ukxyy .ko5k ;s )ew84u enti g 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 :.nkx kq z. )j2q,rhmhrest 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 straig:js vv *q3w5oq-3cyuvht 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 could correctlyr0ql*s xsev1 1 represent the motion of an object moving with a constant speed in a straight lin1xless q *1vr0e?


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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 thetzimxam:,y0x34/m t a floor for 10 seconds. What is the acceleration of 0ixyz: a/mm ttx4m ,3athe 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 a)t k5(k/qwsw 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 showwa5t )ws (k/qkn?


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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 acrj dyh9klg6 zj3 6j1/mxxg3*fe,dwfh; oss the floor for 10 seconmdj 6 ,hj xkhyxf3* 6ef/31;w9gzlgdjds. 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 n;u ck8ty1.ma1 (f6 iwzp-k tgto 60 km/hr in 4.50 s. Which one gttkyiwp - 1n186m(u c;zka.fof the 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 versuu9eltm6,pq/ hfdhn5x g:. )dds time curve shown. Which of the following statements regarding its motion )t : hdgmhp.du/fd l5q96 n,exis 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 d5s6)tztfi :ptime curve shown to 5:dit6fzsp t) the right. When does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of time, m3bk bzk 57oa6a 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 tennis ball during this inte6abkom 7b z3k5rval 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 traveling toj)ra34;9vp m0lfd oteward each other.)el9fd ;mt4a0rvopj 3
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 positi )4ki 4hejtsed, vvb1*ve and increass*vd keeh,14) bijv t4ing

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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 voeyb)aq25- lh;k kvyiwh+/ o:elocity 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 ofadcb uyw*. 4c;+khmm, the following choices identifies quantities that must have the same k*yhcb uc.;, a+mw m4ddirection?

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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 mov- l d:u 2tz6ov2o:asfxes $3.0\;m$ 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, f kd()m7vo3t dnkw+y1$y\;vs\;t$, 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 tjf7q,p;o0v 60 m3njsfwrvi26 gk- waxonk/u,he right along a one-dimensional track for total time T in two par, mfk 6og6 / r0js3vqafp,-jk0;2xni ovwu7wnts.
• 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 st)lv)s 8jdls 0u4kndzmdv -*3e raight track is shown in the diagram. The thick line represents the velocity. Assume t vvzse4dk* 3dd njm)llus80-)hat 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,klf z3;9 ns*s qu osonheu+27 a car on a straight track is shown in the diagns qook u,*s;n slu9zf2e7h+3ram. 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 pos-)jq1 a(nk3o:mqfu kkition vs. time graph shown. For what time(s) is the speed of the object gr)km:qa1nu k3ojk- f (qeatest?


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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 thqe4qe7*zb:-tjz4 p-s 9r: wbvh .lpxpe velocity vs. time graph shown. For which time(s) is the 7*.wz:j-bqhp -e9brptl qzevx s4:p 4 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. time graph for a 1 qy1pskfgn)1imb 9n g7qu38u fixed time internius)9yg3qq1f7 upk1n g1 m8b val 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 horizontal line with inc x8jl8ezubl 6 sg(.d5je* x4znreasing 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 two partec 9 csq0*ukj,h )sc-cs:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the ground iix/fw;p csu 4v*5x rw0n 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 releg9qlx +(:pkmk2 3jbiaased 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 particlepf),kjmh)rp 7 moving along a horizontal axis is shown. What is the total distanj) )pkr,mh 7pfce 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 p)xxiluz+5 hit:z28f choices correctly identifies all of the listed si)ipfhz 2i:+ zxxu58lttuations for which there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving along a line is showm8hr . 2wxiw-un. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacemw2 m-iu8xh .rwent 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 theoudo8ew9g-1 yp7qwx8l j zz 91 origin and its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s9 8edo gwz lwqo89xu1jzy71-p) 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 x1gs934tf f*j ww6qk cright on a horizontal track, each with constant acceleration. At a3sfgx w6wj1*qt4ck 9fn 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 posi*mv zwnd59).p tsfw3 r 18kstjtion $x$, 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 sh+1pgo4*szr wt own in the graph, which one of the following choices correctly describes the relationship between the average 1z wsg+ro4*tpspeed 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 instan2*fixl ey dv)*ts of time, at wei)*xlf2 v*d yhich the car and truck travel with the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rest at the origin and wpmbwf vewtq *c :)67w/g.rq p7ill move along the x-axis. The acceleration vs. time graph for twp/w7g rv6: m ) pc7feqq.wb*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 an ob.t vj7oah yf u/pys xyy34s.v0;sp.g8ject moving on a horizontal line is shown. At what time(s) is the object movahy4 0j.8svyyop .s ;f.s yg/7xvu3pt ing with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position vs. time gralk ewk*(w)6ssy6h3 n,s ).segz qhpm5ph provided. Durihw6gpslm *wkqe) s y6 k.s(,s3ehz5)nng what time interval(s) does the mass have zero acceleration?


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