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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 spew9 :0voba3c ao5u u+ulw+ ,rzhtap5. led 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 distx xs d 7b5nz3t9+jdb,iance per unit time without reference to a particular direction is caj z,nb+s3xid9xbd 7t 5lled

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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 circul,yfonpxgv (j 1i9,ct*ar track at an average speed of 50 m/s and then completes a second lap at an aveon1x(y, 9pv,ifjgc* t rage 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 +z0i ev bx6gk.in 1.0 s at the constant velocity. If it continues, how far will it travel in ixvzebk6+g . 03.0 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 slp.u:v:bkqq 2x iding 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 speed of the plank relative .q2vkq:b up:x 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 hz/emp a(-g/e400 km at 100 km/h. What is the avee em/pahg-z /(rage 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 refe 2 e9re;a)ihcbrt87lrb vp3w.(y3u m irs to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of thre3m9bi pr82 r3 ;il vuatwcy .he7(b)e 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 mo-9g smtm 3g2;7ls6npv .niokwtion 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.lv9m7o w2g in36mksngps;t-, $v_x$ 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 op w4-(b/ivm7 kw ikry*f a toy car traveling along the x-axis. The graph shown7iwk4 vw( -*ypmi/rk b 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 velocity vs. time of a duck flying due south for *mm3d-rs+t) 5wcd grt the winter. At what point did the d* s)d 5rtcmr3 m-w+tgduck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which shows the hcoztn54 -(o ukudj k .p(sf(.position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the averagfond(zk4.u (.chjsk-p(t5 oue 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 position and elat:x tgnb. r cqeb/373lpsed time of a car starting from rest and gbtqn /:7e 3.lt3bxcruniformly accelerating in a straight 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 vel iz-4x4,uxok gocity time graph for an object with the position time graph shown in the diagram4x4xozui k g,- 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 forfj 6k+nz9jr.2vav- 8isj0+n4 wh l crllowing information. An ideal elast 2 lvrrr v6+js0 fa.j-hjncw 48i+nzk9ic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following information7ljov1j 7ydcea6 q m)7j:zcl9 . An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor 1cmlq6:7cej7d z79oy avl j) jand 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 l-0p31oq2/y5f jo zugw6eefi 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 tbxm pm,87mff)o 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 refers to the following scenario: At s)pap0s o6zu*gb ;,gj $t_0$, 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: Azryw(vd0b.v59rp ux 1t $t_0$, 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: At snr1hr (mm 22 ,-wxjdm;*xl ny: 1acef$t_0$, 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 horizontal table tv 3oqip.:c xsx:r )4hvop and off the table edge. Which of the 4)opq. sv3c:hivr:xx 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 repke c:rx fzj/mi7b8 fa 7w;)t 1uvs9e7xresents the 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 = 5.0 secofw )tmjsx8 7u1fc7e vae/; 7k rz9xi:bnds?


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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 relag)3f 6drr2av1q2 c : +pljmapztionship between distance and time for an objec+ :jzp232r )crgv1 d6fqp laamt that is 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 ay)k jyv m.m/2yn initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air res yv.jym2k m/)yistance, 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 bs*:mj)vfaa 3 qelow represents a toy car starting from rest and uniformly accelerating across the floor. The time aqj asfm)*:3vand 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 represen5j;vm* ok t:sjts a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start ajvots5:kj ;m *re 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 md:p7,3b dohx and uniformly accelerati :mo3x 7ddhbp,ng 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 ace30 f,6aq a:viqvhm9a celerating ball. The position of the ball each sm30:6vv 9qah eafia,qecond 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 unifo4lxn6.g1bs zl1qrscp1y.li/rmly accelerating ball. The position of the ball each second is indz ln g .1cp.b ixylrsq114s/6licated.
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 cy)gc0 ;n bf4/2fifm uzircus clown on a unicycle moving in a straight line is sh2i4cugffz;)n/0my bfown 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 azck2pi9;3nd,, h oidj circus clown on a unicycle moving in a straight line is shown in the grapop i32 ;c9,zdhnjd, ikh 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 /h6v5yf+stbjj.-7gv:e ph qaof 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 maw f8b9 4bbllt/rble on a table top for 10 seconds. For which time inter tb/4w8l9flbbval(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 inf4z-9wu7( 0wfo bh:z p ncz7describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble havp7 7wzf0:oz 9nubf4c-z ih (nwe 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 9(.zaw+ g) wwy*x.og pxjlx**k2 ni lrthe motion of a marble on a table top for 10 seconds. What is the marbles average accelerai*)ng zp.l *a+ 2kw xw9 (jxygr*owl.xtion 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 restas+a .- wqaq pm)kzi5- 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 str,usfupq/ gk)zw. 9uh )aight 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 correctly r8byhf1b v/ )klepresent the motion of an object moving with a constant speed in a straight linb ylfhb/ v18k)e?


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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 olli u0 k9q5)s/gk2mnfloor for)u ls 5ln0iokm29q g/k 10 seconds. What is 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 8asx8 hadl58u1toi7hz 8 p.snna1 b6egraph 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 interv hnp.o6zl71taix h8dbena8 5s 18sua8al 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 motix6mobk y+n 5 ih 03tp/0qokfy-on of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on f moh6 xq+ nk50 /3bpyyitk0o-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 ke+ b*vsjhc.2s*sl jm1m/hr in 4.50 s. Which one of the following choices best represents the accel+mev .ls sbs21*j c*jheration 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 curbavx y wg-d247k (8mxcve shown. Which of the following statements regarding its motion is N 4-kx(2a7ydwvb 8c gxmOT 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 velo-+cr0jlrsp+xq4syrn *5e k+ p city versus time curve shown to pc-jk4+e0s5r sn*q y +l xrr+pthe 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, a tennis ball is movefs-cf+0 jb2r2/d 9pxtqczs6c y/stq;d so that the angle between the velocity and the acce ;t6q 9ybs-c r20pt/c2dsjqcx/f +fs zleration of the ball is 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 automobiles are 150 kilometers apart and travely,*tq htr,ye e)f/k -vczb;:ting toward each other.t)ev,yq k;c,/hrz- f*ey btt :
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 fifki8srl7 0ca q/+b2 x-axis. When the acceleration is positive and increasl0ci f2r7k+bi8 asf q/ing

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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 av1amr3rbsf//2sqblv,xpu k km5-lb-q:u09 r uerage velocity 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 dimwz;2 fx zj*((akxsav5ensions, which one of the following choices identifies quantities that must have the samev5aaw(skz*;x fz 2(jx 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 mov t,yvgbl7 65 wg p6,mtjj:nht8yi-rmy/u7 - zies $3.0\;m$ 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-timeeq)d9n c ;1a 73ajhwpq, $y\;vs\;t$, 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 track74 5q9y nyjysqpk t-.c for total time T in two p-7jp9c yk4q5. tsy ynqarts.
• 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 ;4q/x5ys or imthe motion of a car on a straight track is shown in the diagram. The thick line represents the velocirmi qy4o5sx/; ty. 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 thuh3 mg; l wjio;y*9 f6ty0sz-ye motion of a car on a straight track is shown in the diagram. Th gy6*t;0 u w;oz-hm syyi9j3lfe 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 )zokp+ b5 dve(yepecs7q /o4. by the position vs. time graph showyo 5p7 d(qe)ovz pke.+ec /4sbn. For what 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 the velocity vs. time grapp .gp1dh /6zoa uy)wak3k6f7 vh shown. For which time(s) is the accelgukayp.w67)poa 1fz6hk 3vd/ eration 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 accelera2ai8 bki(rn9 btion vs. time graph for a fixed time interval of an object’s motion, what n k(ib8i2r9ab 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 increasing s8+yiru e 7mh, d(k7q,y *khvdkpeed.
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 t2aff0(* *u6quvld ugq rip in 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 ein- syojt() g34 i4lcis released from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is releasedmg4. +9 jybaktu je/8 e(pug9lzx.s4m 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 particle moving along a horizontal a 8t7rir huti/4xis is shown. What is the total distan ttihr/ui8r47 ce traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following choices corre48d5b2 spv skactly identifies all of the listed situations for which therp ss8vk24 d5bae 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 obadtf 67yv 5m3x:k cuf:ject moving along a line is shown. The object startymff6x t7cdavu :k35 :s 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 the oaj0z3 xi478 gigma w:zrigin and its velocity along a line vs. time is graphed. Which one of the following choices best gives thei:08ai j g3m47xwzagz 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 r8jfj*qc7zxsgm;eci (x5s ;r-ight on a horizontal track, each with constant acceleration. At an instant of time, the information about the cars is s7xfejqjrcs m 8g ( s-xc;z*i5;hown:
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 n)i6: 3 w pin6tuklm/ ac7c; yb)*uugtposition $x$, 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 follo cfs78s89sqr nwing choices correctly describes the relationship between the average speed of the truck to that of th98sncq 78srf se 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 choic-23edob o kq.fes best describes the instants of time, at wh3bd q f.keo-o2ich 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 e);cif; e m/cmat the origin 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 relationship for both the speed;/;ccif ) eemms $v$ 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 linc)4o)6qyi wj,vc(*7 bt qig xae is shown. At what time(s) is the object mv6cxi7 bcq 4t(gjy) a),*owi qoving 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 -q*aml4f7p erv t/4ze position vs. time graph provided. During what time interval(s) does the mass have zero acc 44 l/etzvf-rmpe7q*aeleration?


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