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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 travels at a constant speed around a circular path of radiuefhco+uu/4 t:t):-y b(z1d)nras c hks $R$, 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 yp nwp4ay 1dj j/(am7 qi-i4*vwithout reference to a particular direction is callq/* myip-4 4y (v7ajwn pj1daied

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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 circutamrv;-r l:/ qg-b/ge lar track at an average speed of 50 m/s and then cta//:gr l-g ;rb-eqv mompletes 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 moves 0.80 m in 1.0 s at the constant velocitycb74(tq; fo/ us,kwcw. If it continues, how far will it tr;u c/f ,7cbk(wow4tsqavel 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 sli *gu4u.*didc cding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plank at a rate of 4.00 m/s to the left, relative to the plank. What is the speed of the plank relati *u4iu.gdd*c cve 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 8wogob *4o3 en -)olsb30 km/h and 400 km at 100 km/h. What is the average speed of the *n gows3b-4) oo3elobmotorist 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 v 1hr ;j70pr g)oqg,xva toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x dir jg07rop vhx);q1vg,rection, $v_x$ 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 ofg :rii yk7j*0f a toy car traveling along the x-axis. The graph shown bg :7*jyk0 firielow 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 to the motion of chw v.uh -7cg2a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x dir hhw2cu- v.gc7ection, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a duck flying due sout9xn x 3eotn/do8m qwc*/w(ya )h for the winter. At what point did the duck stop 3yat/wm(9xoqxn )owdn*8 ec/ 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 o3my+rv0l ed pxw8 p;f*zu6i +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 t p03xrwly*+e+ pd;zi6m o8fuv he 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 sha65ccau d xl;6ows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The cau5lx6 ;d ac6average 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 3*clp8nyb.t.;ggzvl object with the position time graph shown in the diagram nzvtyggcll3b8 *;.p .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 ideal el c(p36hjubzm96oe fj 7astic rub jo6epmb3f6h7 zu(j c9ber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following aqy ou 6bq2ma9jnm2 asbe801pc--q(oquestion refer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebouoasoj-qy 0b2m(ma9 qbu 8pqca e1n26-nds 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 wib*a9wm2 +8fw)kty0 55xoxxrjcisf / qth 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 vln3s lqk-t 2*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 theami9yvp8 7f )9l3fjyx 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 refers to the fo.7p*vx 4xy phgllowing 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 scenarv7wg7)o ubox, io: 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 o gd,zo,vt0sm9 b49xi down a ramp, across a horizontal table top and off the tao9v, b i49,xg o0tmdszble edge. 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 tadeq:a.-vy q 6ime for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 secondsyq aa. 6q-dv:e?


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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 req(y bcgbd (o26lationship between distance and time for an object that is moving along a straight line(6cydb go(2qb . Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth wi;1 8cmvuj9)t uh *g/ 0wuyoeunth an initial speed of 19whtmucu )18g*o/n;j yue0 v u2.0 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 represe,*o ts7huy*6*ipe ny ints a toy car starting from rest and uniformly accelerating across the floor. y i*s6* i e*ot7nphu,yThe 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 repou(h2:wmi it-58,5ee ewmr z yc br)(cresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled fromec bo mue5,z )t:rih 5 8rmwe(wci(2-y 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 kc4 /p d t2m7r,pdhux4car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start ar 4, p rp4/dkdct7mux2he 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 adas+i6 y51ayr56bt alz.9 qwqccelerating ball. The position of the ball eacsw5b6ayaq9 rdq.y6+z1i a tl5 h 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 :y c2brlaf53sa uniformly accelerating ball. The position of the ball each second is frsb2 3cy:l5a 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 a circus clown on a unicycle moving in a straight 1 p;ix(dhi/ms line is shown in the graph below(x/i;d1h mpis.
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 unic4 2kifoq)my p8tx+ybjq 9/f*r ycle moving in a straight line is shown in the graph below.p/rf8kfyj9+t4qy*bqm i ) o2x
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 *ryy*,cv b2xw 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 5e *m-fvgbf.o 4wayo+6 /krenon a table top for 10 seconds. For which time int+ o -.gek w6/mba nrf4vf*oey5erval(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 motion of a mwkh4ll2izgs-mq+ 1 2 parble on a table top for 10 2wk-h mgl p1isq2z+l4seconds. 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 q /wj+h5zsdo r(uq8ss7/w 5zymotion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 s jur /(+o5 y ss/wh8qz w7q5dzs


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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 unifog 6 5rk/tr8y aguqgdn, (d3:farmly 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 dc(fte +v/25n fuy t3judl -6isr(fw(xownward 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 represen0q quhs8n)s/k :yz/lyq7y ei-t the motion of an object moving with a constant spekiq/l: /e 8 )h-0nyy sq7yszuqed 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 j)+ype fvhk88 describes the motion of a toy car across the floor for 10 seconds. What is the acceleration of the toy car at )h+ fvy 8kej8pt = 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 accompanying7t a5ts5wx1h 4blhza3 ;hdke/ graph describes the motion of a toy car across the floor for 10 seconds. What was the total displacement of the toy car for the entire 10 secw3zhl1 ;/ 7et4k 5bthaasxd5h ond 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) s;* :bcwgtost,z9ympg;k 4coj)rm*7fh* hhf a toy car across the floor for 1b7*ztw:c t;,ho;s9 *4f s)m o*pjr mycgk) ghh0 seconds. 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 uniforr 4j +2mp;vaxemly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best r+pm;j4ex arv2epresents 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 curve shown. Which of the following stwngr4 1ud/ sz+f-0yun ateme/y1+0u fzs wngud- 4rnnts 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 moves along the x-axis according to the velocity versjv)b2 gh6f 9ikus time curve shown to the right. When does the car have zero acc)v2b6hj g9ifkeleration?


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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 thb 0(v)avk0iivfob- 3 eat the angle between the velocity and the accoba30ekf )0i(b-vi vveleration 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-xh hx;7mzso. nwp*.y 150 kilometers apart and traveling toward each other. wx7m.x.hs;yzp- no *h
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 ar : 455vkfbo)txysv+x-axis. When the acceleration is positive and increaa+ksv 5o x:4r5)fbv ytsing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitio83npxf 2eni buj;wf73+yx, den of 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 s5ekv*)*g ewctwo dimensions, which one of the following choices identifies quantities that must have the same directioge*cks) v 5*wen?

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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 movesqsx:l7 zn)*x-qbrjg1 $3.0\;m$ 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-timeeni5: v.0vj x/ihkpmg; c *u5h, $y\;vs\;t$, 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 time : a76dend:n p2ggdf;vT in t6fgp2g;ea7 d :ndvdn:wo 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. time graph for the motion of a+g,8jlakxf t-e :-vkv car on a straight track is show- gl+kxaet: vjk8vf-,n in the diagram. 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- h4+72qh5hspbfqg vi straight track is shown in the diagram. The thick line represents the velocity. Assume that thvg5qh7 bfqphhs-+ 2i4e 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 p( .fx /w3ckokz)lbl y4xiz9a 9osition vs. time graph shown. For by(kczlx l/34.w9 f i 9z)xoakwhat time(s) is the speed of the object greatest?


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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.11: Consider the motion of an object given by the velocity vs. tits84) kmjbl* xme graph shown. For which time(s) is the acceleration of the obj*4)x jksmlb8 tect 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 grapb;mxjz3xu 0io*9az0 1(dl z r87)+bwhwuf m lmh for a fixed time interval of an object’s motion, wh0l zz1mid*x0xjo8rwh 3w; zmu (la97bub+f)mat quantity has been determined for that object?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.08: An object moves along a horizontal linek5 ;jxafn1v+t(v g+7ijk kbm/ 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 pama :c7c4 yjo+d qni,+jco1: qjrts:
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 reachesg4 3u(.)zb cmkilm1o v 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 an37yl dgg:n0l . jzb l8.xhpc*h rc0k4jd 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 gd3(n wiugf/ 3qraph 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 ?3 3(n df/guqwi


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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 idk( 43 ,lwk)42jsba)fu luftcg entifies all of the listed situations for c k)4lffjs4uu tklgw,2()a3b 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 an object movin ppnp s 16py*.;eqsvwa6vvbbiq1 7a;;g 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 its starting position?; s;vvsp 6p;p1i1nqyabp7w .e 6a vqb*


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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 isjbqqra5l m+ (7 graphed. Which one of t+alqqm r75j(bhe 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 moviv*brl7v owf v+; )l watk;n4pfo(c8;vng to the right on a horizontal track, each with constant accelerativvw *o(f7ktnf8 )+;w;vc bp ar lov;4lon. 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 aj75g9b58ytp1jl7sb li q 3qwa position $x$, 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 tthts :h5n2z8 0 lw,y4s9if jujhe graph, which one of the following choices cuy:2l9,ft8shith0 j 4 5nwjsz orrectly describes the relationship 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 choicnp dkb 0ao.0u3sbg .v(k)htp .es best describes the instants of time, at which the car and truck travelt. (vd00 b.pa)h bsg3 pkuk.on 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 resdx3tquj02a8ts8 q ) jct at the origin and will move along the x-axis. The accel8 qd 3cusxa)8t t0qj2jeration 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 9nr; +kuz/eoo 7km: qovs. time graph of an object moving on a horizontal line is shown. At what time(s) is the object moving with its greatkkneo :z9 r7 uo;q+/omest 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 tct+u8mpwy 6n7he position vs. time graph provided. During what time interval(s) does the mass have zero acce6c87np ytwm u+leration?


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