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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 trav cgz;3gbiwt29 els 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 reference to a partpvzg/)t)a o2sicular direction is calgs/avt zo) p2)led

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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 s qcw ,ruw.i.2phwzw(dv tze/5ym0p 9; peed of 50 m/s and then completes a second lap at an avezqzp25ti d.vywr ,. ;0u ph(ewm/wc9wrage speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m in 1.0 s at the constant velocibguzrfi,ausv45d 0 r )r)b9z2ty. If it continues, how far wi if0z))brr 2,4uv9ubrgzs 5adll 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 y, mid.h)y :ea+sk di3lp18se that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and stask m e)lh,d+3eiy18iayp:d.s rts 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 trar1up sb2- z9asvels 400 km at 80 km/h and 400 km at 100 km/h. What is the average spe9-1zbrs u2sp aed 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 omrc*((auwciar j. . x,f a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,,(. * jm.xaw ccirar(u $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to the motion of a toy car traveling alon;r1we ,. wrvpvg the x-axisr1,;pv . wwver. The graph shown below is a plot of the 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 d +q/r,giag 6lfw4f9 nto the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s vrd9i ,n f+f6qg gw/al4elocity 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 grape:vr.,mu 0 r:91yo elwy( yjcuh of the velocity vs. time of a duck flying due south for the winter. At what point did the duck stop its forward u:9 j :ry yec.1,uvm(w0rlyoemotion?





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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 diago /jmhq8quw6s9 bgr 3yd)l:m+ ram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What was the average velocity of the car duruy3 8 h69qjrw)do:+l mm/ gbqsing 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 whichld)n1pu o )ye9 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 closes19nd ulp)e )yot 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 w(x206 ozllg onith the position time graph shown in the diag6 (g0 zx2oolnlram 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 ajre r/g1n7t1ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its origin r1t7/rj1eg anal 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 followingwqbo wn65mh-: question refer to the following information. An ideal elastic rubber ball is dropped fwbmq o-: w56hnrom 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 travel with a speed of 5 2jjenpnqhg(5p(e( e(g2qvxwk )x (p$v$ 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 :emk:euek8 :qhep7 1prefers 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.
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 tc b9jgh0mkaml: 9p4 l+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.
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 referspa lo-j;*xk)p 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 refers to the following scenario: At +zs)d:h7+o blcshwilh 13:rvjg8mf* $t_0$, 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 horizonx)8kh ss4t/lu (9 xtmbtal table top and off the table 8t/)4x( ulmths9 kxbsedge. Which 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 the relationship between distance and tiy,mta8l* nr:qme for an object that is moving along a straight line. What is the i a8 n,mry:*tlqnstantaneous 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 relatio4.oe o27/bvs0aa xdqopl 0kv)nship between distance and time for an object that is moving along a straight line. Between what times disobo apoxd0ev 0 a)/74kvl. q2d 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 dolv0t k6v w*v jkouu(11wnward on Earth with an initial speed of 12*u0vw j6(ltv u1ov1kk.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 ur , 3*jv7 rfoq1y-yetkniformly accelerating across the floor. The time and distance traveled from the start ,73tyoje vr 1f-rky*q 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 and unifg 9ci pz2uzhap*8) (mformly accelerating across the floor. The time and distance traveled from the start are shown i i fc(zh8zap)g u*p9m2n 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 repres0c 1w,f0grza a/ .cvh9f aj.veents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the startj.9 v /,azhfv.0afre0c wa1 cg 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 c4:1 tvk1j8 :zjn;oy /rfuzgq .i+ qboof the ball 8c /b;z4uj:11yvnoq: ktg rzf+oi.jq each 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. Thew;etaa x 0,b ipv1.9qt position of the ball each second is indicatx9.i,t 0qpaw ae;vb1ted.
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 un. /pp6w plkx7bpx0+p (g0q xmricycle moving in a straight line is shown in the grap 6kr0+pq7lpgmwxpxx p/ b.p( 0h 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 ad2t,3kk(fna5e r mcv0 circus clown on a unicycle moving in a straight line is shown in thc ,a2r md(n3kktfe5v 0e graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a vacuum near the surface k ezt w kf w,jf 2:owwcb2:43;r+rsn4sof 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 grap q5-bn2x mzvmzh*0f;yh describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negb-y nq5;m v zx20hm*fzative 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 74 nlh;.rfh2zg;wamx table top for 1h;;a7 rz l x4g.2nwmhf0 seconds. For 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 graph describes the motion of a marble on a table tof5 qrl qyv40l ,ebi*u/p for 10 seconds. What is the marbles average acceleration between trlyq *5u4 qif/lb ,e0v = 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 uniform4 5 nr e4ckwb*wyrg(;m2qs1h fly 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, thrown straight downward with 0/csvs*3 nroh +q1ivagi)sb (iezu dz ,0( p/da 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 the motion of anc+r cpbbwqp4(p9ar; )nu sj-3 op)9jb -3 r u nacrpb(wpcqs;+4bject moving with a constant speed in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes the motion of a toy car-,xjgr zet3q d7.1r pt across the floor for 10 seconds. What is the accelerati t d,e -t1p.rxjzgq73ron 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 car acro e0.w)muiw9fx qxa,ucv 2i h7,ss the floor for 10 seconds. What was the total displacement of thw v,w a2f9xuhu )miiqc,7e0 x.e 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 o t7d *di-b;qf4vru8m sf a toy car across the floor for 10 seconds. At what times or time intervals must the net force on the t;vuqs4 b7d 8d-fr *imtoy 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 ajo15wh1) p xsto 60 km/hr in 4.50 s. Which one of the following s1) aowh1x5jpchoices 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 velo-x3mew ds.bn-u-hroswl8/ b slr;5f(city versus time curve shown. Which of the following state fw lrsr5mbo-l-ub ;hdex 3/8sw.s(-n ments regarding its motion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car mov4cajh,b i9lv/ ce31go es along the x-axis according to the velocity versus time curve shown to the right. When does ov le13,bg i4hcj9a/cthe car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of time, a tennis ball is moved so that the angle becx-. vrv56f rftween the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement isx vcr5 r-6.fvf 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 trav lrcq 6+3/ucskeling toward each other. l 3kcrscq+6/u
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 aco(pjy gndct*d0ht(v,s 0 a+3kceleration is positive and increasin3jdd0hny cv0*k o(gs a+tt,p (g

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average velocity: xlxaq)ne8 )w 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 following choim-w(3vq1o vdl ces identifies quantities that must h mwl3-vd(oq1vave 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 moves l* )yx+) 8lmu( l+uogaldy8s z$3.0\;m$ 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-tiji t7w /uk;lzza0qu (try:u a5; zpw62me, $y\;vs\;t$, 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 f3nglsjw o zg;31/b i rb+b1huf*cd59zor total time T in two publ1g bi jfn13s3/ z+ 5b*hd9og;czrwarts.
• 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 motia/q:6;f kggoh on of a car on a straight track is shown in the k o :6ha;qg/gfdiagram. The thick 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 motion of a car on a straight track zclwo99 ctrgb 0nkq -)u3u2 0mis shown in the diagram. The thick line represents the velocity. Assume tha 9uqcmcu2t3rob )9kgnzw0 l0-t 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. /co5b mfk ;l 03qod6ditime graph shown. For what time(s) is the speed ofkcqddi;6b o3/ofm5 l0 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 object8mlf; /md6.6yj mc):fi kkhzz given by the velocity vs. time graph shown. For which time(s) is the acceleration of the objectmdif. c:yhkl;z /fj z8mm)66k 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 4 i.ewzus y-.mfixed time interval of an object’s motion, what quantityz esmyw-ui .4. 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 alon e,5 10hh7f gzsl.gsmng 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 info-*8qs p0qwf tk9/f c two parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and reaches the ground in a time z6 ( z+taby.tfqalo+1of $2.50\;s$. 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 /pp 9wfh(u o,flez6i.t)fx,c 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/ ftp:-j+x*bmz ;im,i0 r com9v o0n+anudy5p along a horizontal axis is shown. What is the total distance nyub ;o/ r -5vpii+:xtd9z0 mom0am*,j+ nf cptraveled 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 correctly id(fppvu* ;.pvkcq; pr,i te0e9entifies all of the listed situat*( r;iq0t v.,pe kpfpp;9ecv uions 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 a zcdin53-l n or00twb:n object moving along a line is shown. t d0w3co5nr0 bzln-i:The object starts 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 startdpq m6ki fja+.e 3g xh,yn:8(gt hi.f+s at the origin and its velocity along a line vs. time is graphed. Which one of t . f:ptm hf+,k8jdxy gieh+(.ainqg63 he following choices best gives the proper interval(s) of time for which the object is moving away from the origin?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.09: Two cars are movingrn 7 bsmollc6/b9v)e 6igc- * 0wj-eni to the right on a horizontal track, each with constant acceleratiib/9b06-j ve lm- 6i nc7sogrc *)elwnon. 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 posit*7 scyr *(govryt xk,jsd.6,bion $x$, 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 jic)l24teh nsm t(aw oq)d(8,of the following choices correctly describes the relationship between the average speed of the truck to thc 4h,iaeljw(2)dton) qm8s t(at 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 t quhymg- ba)58 q2e+bftc (t9phe instants of time, at which the car and truck travel with gtmqfcy5e)2 +aqb(u 98h b pt-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 th01 ;ok3kyiuat 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 th0io3y k;1kuspeeds $v$ 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 /nn)gws3fvsljhe; 1 gd0f7c1 . time graph of an object moving on a horizontal line is shown3 n)edl7gw1jhs/ c ffnvg1;s 0. At what time(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 alon)/la1d prc3c ic (rj.,ddczd*g the x-axis following the position vs. time graph provided. During what time interval(s) does the mass have zeropcrac() ddiczd . 1c3,ldrj*/ acceleration?


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