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习题练习:Physics Bowl by Topic 2: Kinematics - part I General Motion



 作者: admin   总分: 72分  得分: _____________

答题人: 匿名未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle travels at a constant speed around a circular patvozm1 h7vi72 (l knbe/h 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 d0qua4scx e4 ;cf7h 4ereference to a particular directioq04ds4 e accfuxe4h7; n 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 track at an average*af*6ii0e iup speed of 50 m/s and then completes a second lap at an av 0 p*iei6*uifaerage 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 0oe4/gwi l,eh ..80 m in 1.0 s at the constant velocity. If it continues, ho,i/ og ele.h4ww far will it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank that is sliding at 5st0)hb zuf)de c(5)hf.00 m/s to the right across a frictionless pond. The boy then turns and)fz(s c0udth) b )h5fe 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 trav 77avn)skhlidg 3fs 7f )(u5zwels 400 km at 80 km/h and 400 km at 100 km/h. What is the average speeff7z is7a3 ls)dnv7h u( wk)5gd of the motorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy car traveling along thm npshp n(u+(2clgw1;e x-axis. The graph shown below is a plot of the car’s velocity in the x nns w(g hu(p;c+lp1m2direction, $v_x$ 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 refe1uh 9lk;:wp yqrs to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity ih1klypuqw9: ; n 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 motibg9alrc6j /rt+9 vj7bon of a toy car traveling along the x-axis. The graph shown below is a plot6/vgjbr+ 97trabl c 9j 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 f3;w9z t-vqq sflying due south for the winter. At what point did the duck stop its forward m- 3qqv wts;f9zotion?





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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 whk hbx6 ofga-nx02ij *,ich shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straighj*h ,62gia0 f nxo-xkbt 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 bn,ld+ 0pf /pte c 0l-xlfq59rxnz +t)which shows the position and elapsed time of a car starting from rest and uniformtxdf) llce r,pt fzn9q+50 +-x/lnp0 bly 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 velocity time graph for an object with thqseph-td 8y1 4ou gg+ /x-6epre position time graph shown in the diagram at right? pg/gep h-6y4e o1qxts+-8dr u


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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 refe 9 g1bpr uk4p1ef9xyo+r to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor ap1k49bep +yf9g1orx u nd 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 topcbr7pz3v (z0v b.jael u(,h. the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height. rb( z, 0z(jap.pv l.eb7huvc3
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 ofgf+b:7qflca grd, h .4 $v$ 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 refe qd8kv0f,5e.krt-vrkrs 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 to the following scenario:lmlxz5hg 7w*y 9 q: wmh5ul(;a At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the foj i88vv3efsaw 0w z. :4lxkf*oyrff0/llowing 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 l(5)1f)xew : e )zeq yi2ywsclrefers 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 horizontal table top and our:r8k1owe x*ff the table edge. Which of the following would bestro*1: wr k8uex 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 relationshipikm76a6f aoqee6 4h wy07; tp)9xqjw t between distance and time for an object that is movi;q6 k79watf tax6hmjy0q6 7e4oewpi)ng along a 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 distance and timetrm1: , j8osoz for an object that is moving along a straight line. Between what times did the object have t1:rszm8, jo oa non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an i/ukcyi )q-l)9jxf1 oz nitial speed of 12.0 m/s from a position 10.0 m a)k1) izj xl-u/y q9cofbove 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 res 7qy+ja 3bdxw9t and uniformly accelerating across the floor. The time and distance traveled from the start are show7 j3ayqdxb+9wn 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 startin,q wvz-1ikmle+evtst9q0m 1*jpmfv f7 vb45+g from rest and uniformly accelerating across the floor. The time a etz++l 0mmsvbvf iv-4v1f wj ,p*1q7t5 qem9knd distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting 8q6v xc//n nusfrom rest and uniformly accelerating across the floor. The timnv un sx6/8q/ce 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 uniforml+ vuovh:*dh; qy accelerating ball. The position of the ball each seh;q+o:u h *vdvcond 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 accelerat : j 8jv18p)yi9vraukqing ball. The position of the ball each second is indic)ikup9:y18qjavj v8 rated.
Which of the following is closest to the acceleration of the ball?


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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus clown on a unicycle movrh 780shsuj *o8siza1ing in a straight line is sh 8s8huz0srio*j 1 s7ahown 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 czuo 0kenh54il x:87mbircus clown on a unicycle moving in a straight line is shown in the grbmk74:0x5uneziol h8aph 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 of the rk6*m8pn2htny+.lx n:1gat d 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 9sd77 ihv0jl9q i0nasa table top for 10 seconds. For which time interval(s) did the marble have a n9ih7v9ls7j n s0diq 0aegative 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 describfpt(pr z,.7)d cw,a woes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marpwo7a r (),tw pz,dfc.ble 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 o/jut+;adxd xdp7f.xac 8* 5yo f a marble on a table top foru.8x xdx+5o7pdatf* ;j yc ad/ 10 seconds. What is the marbles average 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 uniformly from rest for a ti,ko vx4cm: 89lbonlph6ip b:(me 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, thnx,ky2om us7(xo b0b*rown 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 followmu+,oqs1ua: xjg:-*o mb um*ring graphs could correctly represent the motion of an object moving with a constant speed in a straighma1 u::,ou g-o*xbjr+mu q s*mt 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 grapr 5mm8an,3dsry1 a ea6:jg1 jnh describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at 1sadn5 6:a rna3gm ,j1m 8yjret = 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 across the flf6kmsvl 62 ar-oor for 10 seconds. What was the total displacement of the toy car for the entire 10 secondl26s-fv 6 mkra 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 mo-gu jyo+tz,a 3. ahmib8ek3l *tion of a toy car across the floor for 10 seconds. At what times or time intervals must the net -j oza3a3 ugb,*y+im el8hk.tforce 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 uniformto(m,a9i keig3 81qbo ly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following1qt9mgo e (,a3kb8 oii choices best represents the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time.d ixk-.q.x iy curve shown. Which of the following statements regarding its motion is NOT CORRECT?i.dy.. -xk ixq


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the velocity vx(e8-fk tlu+vaagbv63 ; l 0d4;erpkqersus time curve shown to the right. When does tk;84eqafrpb d v3va-el0 6xgl+u kt;( 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 oezz ;y fhyp1( uv6(;odf time, a tennis ball is moved so that the angle between the v pzyh euy;d(1;(ozvf6 elocity and the 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 kilometers apart and traveling towar p5sfxz 4jv ;bglo.m6:d each other.6jlsog m;xpv .fz5b4:
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 ,mlyvqzvp 7oo.-ix:4 is positive and increq,-7 l4vo oypvzix:m. asing

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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 velocity2gpv0j82 fpxq 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, whv4n8to/udo:a6c a r:e ich one of the following choices identifies quantities that must tvua6 e:4aoc rn8do: /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 movegb : r 8k*mock33rfl2ks $3.0\;m$ 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-tb- f.9yaykmwy* fo5qy :j5/nqime, $y\;vs\;t$, 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-dimqq(1dlik r5wqxy a6e87qp 2az7(+udm ensional track for total time T in two parts.8+5rx7ddq uq21zpwiam(l q6e a yk(7q
• 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 vm .)zbaxwgszp 4;7sd 1x ccn56s. time graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. As zncb xac4; 5sspm.)6d17gw xzsume 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 ,0udzpwerl0k29x apo.us+6u on a straight track is shown in thawl6 udxp2uu9z0 pes,k.o 0+re diagram. The thick line represents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by oq (7gvofcmv7qd,5.f the position vs. time graph shown. For f( vo.mdq5,cq7gov f7what 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 givv maf-kgjy h7 j52:0)awzwh9men by the velocity vs. time graph shown. For which time(s) is the acceleration of the objectvkw-zjfj 0)2y h:awm9m 57agh 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 accelegm na2z5yobp52 vl::b n5zjc3ration vs. time graph for a fixed time interval of an object’s myl2z5c55apzm: gb jn3:nbov 2 otion, 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 al e-fsjlk,,(/;yeb zhj ong 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 m/ft us6 wnh/ys +n/ q.*dv.plparts:
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 4yl q6t,p2vobqo a7 )pis 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 released from rest and reaches the ground in a timmw cbx*ry u309e 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 hz.zyin6fjop l 9f8; 0iorizontal axis is shown. What is the f8 o zf6.li09pijy; nztotal distance 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 fgza*k, a36d6aj 1j8jgerf s v*ollowing choices correctly identifies all of the listed situatioaf*a6 ze*6rj,gg1d8v s k3ja jns 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. timhod)/,p k ool:e 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 tk :)op/ ldooh,he 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)lm13p 8kb hq4awc*ns and its velocity along a line vs. time is graphed. Which one of the nk4q* p3ls1cwm hab) 8following 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 movin.a sxd9y+ yy6f.exyc 7g to the right on a horizontal track, each with constant acceleration. At an instants7dc.6y. yyax ye x+f9 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 position (pdtjm e6 2qf2plz-o +$x$, 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 entir ::hjc hvjcgn/7 mtm0:e time shown in the graph, which one of the following choices correctly describes the relationship:0/cn mh:mjj 7 gtvc:h between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices mat9 gccn-*yn4 vo*h. best describes the instants of time, at which the car and truck trav*cmg4yn9h- .co na* tvel with the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rest at the origin and will mov+fl8zuwfcmp 7c6)z 55o ldppr62dsh 5e along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship foz6u65 c7)drhwppmcfp 5o sdz 2l5l8f+ r 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 f.wv*,wz ;eynvs. time graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with itse*wnfwy ,z.v; 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 alondace 1 8t2yk ru.n1cvw-n22 nszp2s)xg the x-axis following the position vs. time graph provided. During what time interval(s) does the mass have w)n2s2nuyce xn-t1v rc8ksp2d 12a.z zero acceleration?


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