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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 travel cw4co/wvy1.ib n.z2 hs 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 time without/pacz:z6k.vni(b. mwn yy i1kp y(-q 2 reference to a particular direction.zkp:yczn(62pm vq b i-wa(.y/y 1kin 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 tracx(sd.uo( )xcv,ydi(s- xtu *uk at an average speed of 50 m/s and then completes a second s yd. u (cxxu,xotu( ds)-*vi(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 5g-z9em8 2amcpp t+i1z*z dnqin 1.0 s at the constant velocity. If it continues, how far will it travel in 3.0 s9zc+a 2*51dmzqz8n pg mt ip-e?

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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)mcm3;qunjacg37:1 :aa ,t oawvy cn: is sliding at 5.00 m/s to the right across a frictionless pond. The bo m 3:t uc;jm13a,n: :vaawgyc7ncaoq)y 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 trav5r ma5oh2(lur/kua 2p els 400 km at 80 km/h and 400 km at 100 km/h. What is the average speed of the motorist on th2urr pa(okhu 5a2/lm5is 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 car traveling along to26trq v2-akt he x-axis. The graph showq6 2tv-o2tr akn below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to the motion of a toy catw3e boxeak ,rm4)2 cmzra/+( r traveling along the x-axis. The graph shown below is a plot of the car’s ( m2,becao w/ 3rztrmka4+)x evelocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a to.-bc+rf .cob oy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x f o+.cr.b -bcodirection, $v_x$ 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 thdqvk a+-rbv x2tk0r)z.i g9g:embw:+e velocity vs. time of a duck flying due south for the winter. At whatd2q+bkegv.0 :bx v t ak-wzri m+)r:9g 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 which shows the 1gz p gb,ro+7ldfm3t*position and elapsed time of a car starting from rest and uniformly acceleratro3+ p*ggzf7,m1bdlting 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 tojk: 95itc 9vpx the diagram below which shows the 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 interval is cl9xi9ck: 5jp vtosest to


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.20: What is the shape of the velocity time graph for an object with ti -ls )gtjjp)f5by tvzx3x 0s7 4:x)pvhe position time g jf)-:xipl0t )gzy t3sp5bx7jx) v4vsraph shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the followip vr n,uvz/*vwj(00 r5o +4vmp rmuqf:ng information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.mo fjvr+up( rv:q/0,wzuv*0 5r4m p nv
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 8z8.gxxg;xvc question refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its xxv8x;.8 gc zgoriginal 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 wiz:eoav:/mszx-351es4 gt20rago )bbwi 5hff th 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 followingnlzg 0: +c-iqy 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 .at8w l- oyzk0e; yjaoe8keb0 u(d0(k$t_0$, 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 refe 1i,1npzikqd:rs 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 r eyz(8cn6)f o ggat-a4efers 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 6fy1 c2z2ka lqhorizontal table top and off the table edge. Which of the fca12 6fy2zkq lollowing 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 the relationship betdb qo g2w8cy9j1uq (bmck s37v5c+uj (ween distance and time for an object that is moving along ac+(c5yq9 ubwb1jcm 8sd32g vj uq( k7o 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 7 b,kdc uwtbrlh7)e.:distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero accelerat7b)c.dwte, ub r7 :klhion?


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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 withy5b mk8bxekqsh; ;*j23x8jeh an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring a e sxemkx*j8 h52qkbhj8; ;3ybir 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 ub)jcxd 5:bwj (jmq4, rniformly accelerating across the floor. The time and distance traveled from the start are shown inqj d5w(rj b cbj:)m4,x 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 stbuq y w8.bqmxr)s;tp91ugk0 r8,-y yiarting from rest and uniformly accelerating across theky8r,qu -u09)rb;1qs8b y gimxwpy.t 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 at8ur.7 (ygx: kjer4tcar starting from rest and uniformly accelerating across the floor. The time a8 (g xrkt4j.ery:tu7 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 position o,+qg1hm6 o-g im2gziojt. lr *f the ball each second is indicg- r g1 ozmo+j*l hig.q,imt26ated.
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 sacl,oe cm4cffmwb)b: ;v ;h46 hows a uniformly accelerating ball. The position of the ball each second is ; ,wma6m4; hcco4b:)fcbefvlindicated.
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 ciy+extzt+ ;uw1 rcus clown on a unicycle moving in a straight line is shz uwttx+;ye +1own 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 movivxz./rgt* unjliy ,0)db-8qpng in a straight line is shown i xqu/*zid n0 8v,g.-)tybjr lpn 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 vap*9k4yo2: t0hsf 5s l sdjf1sfcuum 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 describes the motion of a marble on a tov,:yzdrt l8v55 uw(h- n/gsuable top for 10 seconds. For which time intervn/ o-wuh v 855rvszd:,tul( ygal(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 *ith i6:iqdrh)*d:sv vf -ag ayp 2o/.motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive avro*qdf)*h st:2 a-h:/i i6ig.ap d yvcceleration?


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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(hp ;3sxf*gq 3a1 qyxr of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3fq;s g31r3*y xhxpaq (.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 unij8sa(ix/ ts6gg bux84m( l0bl formly 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, thrownrno;)tzv.q/ jx.i pd 7d5cz.i 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 coro1p off e* hj0l;qcb(2rectly represent the motion of an object moving with a constant speed in a str 1*f b 0qeoo2l(hpcj;faight 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 th mz5;uxmk() fpe motion of a toy car across the floor for 10 seconds. What is the acceleration mfp)x5 m(u;kz 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 desz0s40(pv zejf cribes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the4 (pjfzes00zv toy car for the entire 10 second interval 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 motion of/hfo 5vrl.oly;05 iq g a toy car across the floor for 10 sec 0ol/oirvl.hqg; 5f 5yonds. 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 to 60 km/hr in 4.528uy0yz fsy7clkio ,/0 s. Which one of the following choices best represents the acceleration of the ca l,csk28yy0/y7iu fzo r?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time curve shown. Which of the fol 4tn9*rrnc rg(j / for9xkcs0xc 6vn46lowing statements regarding its motion is NOr4 jcnn 40t9r(rnx6kfxcro/ v9g *6csT 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 sw9gj448iez6cpf z gjo / ph77x-axis according to the velocity versus time curve shown to the p7e6ps87/ j44o gczz 9fwhgij 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 mo/jb m7p1ezv5-82vtgl ew b ,pqved so that the angle between the velocity and the vtj vlb8w1q/25m,7zepgeb p- acceleration 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 kilome97,aoh/fdyk-cn h p:gb 5ba0 mters apart and traveling toward each other.bpg-fhdy a7kanb09/ c o5mh:,
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 ny e 8* b75fkgl:zgcy 3px3s2xx2if.d on the x-axis. When the acceleration is positive and increasebyp3y s7g.58 :zc l3dxg2 2xxnkf*ifing

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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 av,b d27ax8 0hguj.lony)z qju0 erage 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 dimensions, which one of the folq7y+)yfxy x 9goxy yj:zx;0u)4l du8alowing choices identifie) q gyx 9xl);0:x4u +7ajydo xy8fyzyus quantities that must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car movesm5n ee.18mtw*/oqz ae $3.0\;m$ 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-0h,veg la -v1 )yt fh.nqvufj9. l-n-atime, $y\;vs\;t$, 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 alo 9.h6 sta, i)0z i-o0sghzcakjng a one-dimensional track for total time T in9),g z.0 t his6a-jzhoia sk0c two parts.
• 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. t1zo(pkdf 0ilye*+ a2 time graph for the motion of a car on a straight track is shown in the diagram. The ydzkf e0a 1t2+*(li pothick line represents the velocity. Assume that the car starts at origin $x=0$. At which time is the car the greatest distance from the origin?


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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.24: The velocity vs. time graph for the mo6 +j-tpehe ,l3 ni-opstion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts ae6topp3 n,-l-hi esj+t 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 objejcvryu2nnr) d6 ymm+o6.u ( (nct given by the position vs. time graph shown. For w (r vjy2.omn)undn(6 y+6 cmurhat 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 to lsqf4:s zz(m7 s w;.9ppwhx5n k1k)uhe velocity vs. time graph shown. For which time(s) is the acceleration of th)9w1oswmsupnqpl:;xkzzh sk .475 ( fe 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. tim.uomzyc2mj z-*:l m.2c f v4voe graph for a fixed time interval of an object’s motion,jv vu.mzzc:myo f*cm.o2l2-4 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 azpms4*f+t(j zlong a horizontal line 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 two parts:vv mc,j gxqoa:8;;f4 o
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 e- n13dlg04gbo. rrgrreleased 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 released from rest and rea c(un9)sccux 8ches 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 al ea pz47-1xhl53yf, q0/jptoiodrop*ong a horizontal axis is shown. What is the total distance traveled by the particle from ty05xi-tfa/pdp7 q, eolrj3 h4zo p1*o=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 thetl 4wh5dyag(z4 w,gv. following choices correctly identifies all of the listed situations for which there is a non 4 ,wgdv ztglhy.5w(a4-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. y)b. d;qx)jqg s(r02bzwj+ml time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement from it20;js .g(d+m)r lyqbbz)qwjxs 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 and its velocity along a line vs. time .ss(bjpz 9o4m/ uhl:w is graphed. Which one of the fl4bhwjuszo /p9:.sm ( ollowing choices best gives the proper interval(s) of time for which the object is moving away from the origin?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are moving to vsmb 7gj ii s8vol7ie ()de:-+the right on a horizontal track, each with constant acciimi v)edgl:7vsejs+7- b(o8 eleration. At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a positi;mj7 pfu2a ku +,vr2gw/ti k7fon $x$, 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 sbo8 im)tr iz55f k5x3mhown in the graph, which one of the following choices correctly describes the relationship between the average speed of trbmto5 iz8 fi3 5xm)k5he 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.3c,lro mie z8 nah1x5 choices best describes the instants of time, at which 8a1 ., lh3e5z mconrxithe 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 s-bk .ef77kta itart from rest at the origin and will move along the x-axis. The acceleratk .i-f7aebkt7ion vs. time graph for 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 object monrm2vvjmnw / jhexu-.-*k)/yving on a horizontal line is shown. At what ti hk-rmv2j*mw.jx/v- u ye/)nnme(s) is the object moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis foll2 3puug,a+mpm2thj l6owing the position vs. time graph provided. During what time interval(s) does3tupm2m agl6h,jpu2 + the mass have zero acceleration?


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