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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 trave2jog*y2tesm:,7 uu gpl 2 qfb+ls at a constant speed around a circular path of radius $R$, if the particle makes one complete trip around the entire circle, what is the magnitude of the displacement for this trip?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.01: The change of distance per unit .+fhgr7iur g7time without reference to a particular di7fg .u7grih r+rection 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 txqti; vh3 .ipb02;s.dcf cz)e rack at an average speed of 50 m/s and p;ze.bvfcqh;.t si320) dx i cthen 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 movd qj6g0.b1zkj x+,)7dvsqon x1opn4 ies 0.80 m in 1.0 s at the constant velocity. If it continues, how far will it travelox+sjn1,1.0 d7jzqi d)pgxq6knb4v o 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 wa0e-)o:07 cx1uhn4sqa ng ouon 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 walu 4oe)7c g1wuxnq s-a0:aoh0 nking 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 andw6omd/y,z;xv 6j ;.fm a6q eud 400 km at 100 km/h. What is the average speed of the motoris6 yq; fjauo6ez;d.6v/ ,dm wxmt 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 carkiw-uo i);g fh77vn7o3mwr+s traveling along the x-axis. The graph shown bel)uog;7 hvr3o +isnk7wiw- m7fow 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 uo1 0i yzuk3o(a toy car traveling along the x-axis. The graph shown below is a plot of thu0 3 y1kuizo(oe 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 j/ooxcw)7 / xkthe motion of a toy car traveling along the x-axis. The graph shown be7ok/xj/) x cwolow 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 y9:l n+8bjcxbn0pa1cw4yv en w*4 *r9gb7woza duck flying due south for the winter. At what point did the duck st0v49*p+8 n blb*a y:bx9ezw ocnn7wjgrcwy41op 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 refv5+0 xpf50 jvku/ itnmer to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a s0/f0u xj i5vpvmtnk 5+traight 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 b loj;vl2fi.4the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second inteo; f.vb42ljilrval 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 dq e5 sbwzp(*)iu*m+nfor an object with the position time grapnz5d* wui)s e+*mqbp(h 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 9 ll+sr1g umj/yc/q s-to the following information. An ideal elastic rubber ball is dropped from a height of abjss ury/lc -l/m +q9g1out 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 information. An ideal elx*bk 4,f:rokp astic rubber ball is dropped fromf4 *kp,bkrx:o 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 trav iny +f.tryhiocw13hrj)q . 461 yd(bkt;y8zoel 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: Alma h *)g u97yicbqe+/ib:sf-t $t_0$, 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 h,b 7io7uh x *ohkpb1 8j8sg6escenario: 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 re r.mv.h,8gqepqc1q2 dfers 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.
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 r2pq xq0xe.*yol lt svt u;yn al596d;*efers 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 horiz e1r-edtjlq 4bvz0h:8ontal table top and off the table edge. Which of the following would best represent a graph of 4ze8r: t10 elqhvbd-jthe 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 relatioypdk ; )m k:xppbm2,qng8+(tvnship between distance and time for an object that is moving along a straighmb2pnqm:k8g +p x) y; v,k(ptdt 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 re.a5ke)k b 4auglationship between distance and time for an object that is moving along)4 5a kuke.abg 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 ons35,eu f yqnlfpv h0a:16e70di t0qt t Earth with an initial speed fqtin0 te q6yh 7uas350tf 1pd:l0 e,vof 12.0 m/s from 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 uniform tl gu 9yz682tuyql;/;hwws/wly accell s;qy89zt /lu w;y ut6g2wwh/erating 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 stg 5woxs /c+-lparting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagrapc wgsx5l+- /om.
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 stavn8 /e m9vnq vrokv4/v1ny14yrting from rest and uniformly accelerating across the floor. Tvv /onyy/48ve91mnkqv n rv 41he 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 showf l6gnf:;:qj us a uniformly accelerating ball. The position of the ball each f6lu:q:fn; g jsecond 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 positiontamk7t3 cy(6lx.dg/r fjsm rc0 1+7dv of the ball each second is a3 ylm.tg6(0ccd7sr r 7k+x1/dmtvjf 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 c4 12i6vxv hbfv.v3ce a circus clown on a unicycle moving in a straight line is show1vcvebif 4c v xh.v632n 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 moving in a str3txsplj; u)0q aight line is shown in 3q lxptju);s0 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 n 9lq,gf3p +pfhear the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a mvk2 ) oex*97j:*3/zy8mmwehtpt f hybarble on a table top for 10 seconds. For which*93hbz7y 2ejmowx) he 8ptfm :*vyt/k time 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 mouo/s*ugwz:vdd(d2.o tion of a marble on a table top for 10 seconds. For vu2:w ds./zdoguo* d( 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 gfi:ob qy)y q5b/gf2 2g6:w ohuk- 6bayraph describes the motion of a marble on a table top for 10 seconds. What is the marbles averagaq2 bo i:qhfbgb2kuf go- w y)6y/6:y5e 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 +(bfsw/ud z.x )2s1p qgtx-hkuniformly from rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrr eku+en;):sk v 4lak+own straight 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 represent thn0 o-x omb.v6oe motion of an object moving with a constant speed in a straight lo mvxoo6.bn0 -ine?


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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 dvjl0kjjm s 80 ),s(vdx1wxoco rzs.:1 escribes the motion of a toy car across the floor for d jvwskcj)x vox8,s.r sz00 1m(:jlo 110 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 graph describes the motion of a toy v hk(lwd56g 5jcar across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 second k6lj5vhg ( 5wdinterval 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 graplftypv4(,w/a4 f ip 0dh describes the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net forcwp0p i(4v d4alf/,f tye 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.,l pgf*o;* wml8 uot3j Which one of the following choices best represents the accel8g w *fu3llo,*t;omjperation 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 o p.61alv :m cbeb(3btgf the following statements regarding its motion it v b l1m.gbe(36:cabps 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 accg,68wmkaf+)tdh* 0 qapz yc ;fording to the velocity versus time curve shown to the right. When does t6 8+,z)aqp dwfyh0g amtc kf;*he 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 movye dq o j;9:qpb:k( jx9 ubsg17ff3ihq6lm2(g ed 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 te(d9gb:;of69 (l3jm :xbeiu27qfq qgshy1jkpnnis 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 kil+pp 35t9kls7mnbnx m4 ometers apart and traveling toward each other.7l+ntn3mp4kmb 5sp x9
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 p .en,5ya2ho jcositive and increash5oe n.jac y2,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 ofz x q*65nby8)sj8l;4amgaw s c3vh(bl average 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 dimensiondii1(pt 0t9kv0 t 2bc wtr9ke5s, which one of the following choices identifies quantities that must have the same ddec(k9tt t2w19i0k5 0 p brvitirection?

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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 skg1lq,;m xg48/r. l7akba qw$3.0\;m$ 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-t:l;0kn mlcped,no:77src :q sime, $y\;vs\;t$, 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 for total timu)m yz,gur g/0e T in two partsyruz0u/)m g,g .
• 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 gmzqfd/ l(a;;oraph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts ;; /l ofmq(adzat 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 motiige c5f j2j:lacy5x6- on of a car on a straight track is shown in the diagram. The thick line represeci2 jayl:jgx5c6- 5fe nts the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the position vs. v16qp,pk gsr*b:h5lnaut1 +p time graph shown. For what time(s) is the speed of the objplhs6q 1vp ngt+ubpra 15:k,*ect 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 ve)whc x4ifg (w-locity vs. time graph shown. For which time(s) is the acceleration f)icw(-h 4 wgxof 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 thc7jp-9dkc-hiad q/6*kjs/2i cj+yp je acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been detp6/dkjk iq - cscja dyi/ j7-c9p2h+*jermined 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 linesnq 1d4/;;r2s aoipwn with increasing 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 tpaznr7 z/,m 1nwo 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 ground in a t(k5lf a/(tn,rh2glxa t8lk3 1ih3fcg ime 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 bt5t )4i1clr3 (hz+bi3jp ii mfrom 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. tim1 xlofkrk7 uv p.t6a1z0c;;ek e graph of a particle moving along a horizontal axis is shown. What is the total distance traveled by the particle from t=0 to t=10s ? 7;p tocea1;. f z1ulk k0vx6rk


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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 correctgkj s i:qr:g24 fhw*o3ly identifies all of the listed situations for which there is a non-zero 2* g:3wh4r:joigsfq k 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 ah u,r8a(y1 ;ql mwp6madu2jn5n object moving along a line is shown. The object starts from rest at time t=0 s. At what time(p ,(8m5law 2y6jdh1umu ;raqns) 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 origin a)lm x17ui uz x/h bid:r04le9bnd its velocity along a line vs. time is graphed. Which one of the following choices best gives thd/1)i h xblx :ilm97 04uzruebe 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 : *-w y2 pxmi9uhvkzo/moving to the right on a horizontal track, each with constant acceleration. At an iny v92mw/kzupx*o: h-i stant 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 posit gbo(2ow./dv ohvl0z+3c hh/pion $x$, 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 sd i69rlf ffh,8hown in the graph, which one of the following choices correctly describes the relationship between the average speed of the truck to that of lhi6r9fff, d8the 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 instants of timevsk(zl,gni /) , at which the car and truck travel with tgvn/sizk l, )(he 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 starp nmks4t /-bd+1v(rldb 79qjm t from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following n-l+m d(4p7djm9/r b ks1q bvtchoices 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 o*x9havqn9w)d/z a yv(iacs w-4m5ak( f an object moving on a horizontal line is shown. At what time(s) is the object moving withw4nzqm (9k h(5v)cvx a -/adiaysw9*a 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 /z 2l3vhsl-6evz7 rowvs. time graph provided. During what time interval(s) doe ho 6v3vls/l7 we-z2zrs the mass have zero acceleration?


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