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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 ofjs2 ldpakb5*+xz*k x qen9,z; 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 withouk luavu6 3ye8,9ex)-mlya3tp t reference to a particular direct,y v8 -x aklmea36)let9u3 uypion 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 speed ooz *02rg w0/1- xd;hc lkalagpf 50 m/s and then completes a second / rhk-p2ox;lazw01gg* ad0cllap 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 m sc)- ;zxroo -sp 80u)jnx1fothe constant velocity. If it continues, how far will it travel in 3.0 s? x-) -of1u8z0 so;jcs omnp)rx

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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 slid-cx osoaq:z0 o+00x)fgi p7f ring 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 relac :0gf0)7+rfooo0x qx-szpia tive to the pond now?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.18: A motorist travels 400 km at 80 km/):5zh8seu lwod-u ; qh dmc)5k1my:vx h and 400 km at 100 km/h. What is the average spe)c 5ul q) x8u myk:s:-;d hodwm51vzheed 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 th3nvlye0 + pxf5hfo )u+e x-axis. The graph shown below is a plot of the car’s velocity in the upf3)f+ 0nyxv o+eh5lx 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 thee(sp 7:7s(;5w zf red obzw,ks motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’:z(sfeswk , 5(ze 7dorp7wsb;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 question4v1mr n(09jvrq * w9p/lbovpcqc-+h s refers to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x m n lw9q -vc(rjcboh+sp90/*p vv1qr4direction, $v_x$ 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 duozgkvma ho;/cx 1t +t sm;1ban 9,)t3eck flying due south for the winter. At what point did the duck stop itmxtkmc 1+e st ;o/a)t1nvghb 3,z o9a;s 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 thez iei er)-y,+n diagram 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 during the third seconezynei-)r +,i d?


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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 diasy, 3hoeeay7d vc,97aaz t*d iwn.31n gram 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 closesd9vat s3no 3,ha1ee*yn7.da7c,y zw it 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 velocit*rv o p;:hfr2ll+exht*-ew a7 y time graph for an object with the position time graph shown in the diagram ao-arxe2+l:e h tphrlv* *w;f7t 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 foly*,8m-hogx nu9ejz*;q ad ( hllowing information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originao,dja*q9;l hm*-e hyn zxg8(ul 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 tfyo.8g+wgm + b-4srf1.ryi rto 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.t ifys4yr-gwf++ rg1r .8b .om
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 trave yh)8lrt a0),2fnhd vrl with a speed of $v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question rkwdg1oix kxir4+v+92 efers to the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
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 o4h2 3 dbm6dpdlc9x, j9w4syzthe 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 followinc)xq(jmoh g 1;g 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: 2cqt )l s3b.hjak 2 -.i;eohn2ic h;fhAt $t_0$, 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 tablom g493blwl7 je top and off the table edge. Which of the following would best represent a graph of the magnitude of the ball's o9jl4bw7lg3m 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 di,;2jl qpgphyc3 2q hc,stance and time for an object that is moving along a straight line. What3ccj h ;y2g,qqlpp2h , 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 represen0n/)gn sl(5 mjwe *9llup0xip)+wswhts the relationship between distance and time for an object that is moving5 n/h nw)+pxu 0w()sllwp0 ijl*9 gems along a straight line. Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth with an initiahf d)eblcm.w* f7fq5 2l speed of 12.0 m/s from a position 10.0 m above the ground. b.c)q2deh57 f m*wflf 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 ca3:uxpb2fp c6h r starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in thbp 3 xcuf2hp:6e 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 staiwe to7:l ve77rting from rest and uniformly accelerating across the floor. The w7vo7 t:le7ie 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 car starting from rest oa6 rj-zn/ze 5and uniformly accelerating across the floj-zrz5e/ noa 6or. The time and distance traveled from the start are shown in the diagram.
What was the instantaneous velocity of the cart at 96 centimeters from the start?


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.08: The diagram shows a uniformly acceleal f1lx jiqbk6-nxc9w 48c.c4 rating ball. The position of the ball ealj1 8q bxlc4a-f 4n.iw 6xkcc9ch 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 balz8mt.5 z4w0 (ez n-jlhxa(pytl. The position of the ball each second is indicatzp0e xtw amjtyz.lh8nz ( 4-(5ed.
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 d3i1 6,l xbu8k0ksoofcircus clown on a unicycle moving in a straight line is shown in03fx6o8 kos l 1uibdk, 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 auaqc4;u6h )*kkzo k6x circus clown on a unicycle moving in a straight line is shown in the graph below*6c k x)6h zo4;akukqu.
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 is g,0fgjs6 3tv dn/ru2n a vacuum 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 marblea,;: srw: zc,t0 oyd2buo9p rh on a table top for 10 seconds. For which time interval(s) did the marb:r u c9z t ,sd0r;oa,wb2:hypole 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 thepd ,ojx.1ays6 motion of a marble on a table top for 10 seconds. For which time interval(s) did 1yoda 6,.jsxp 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 motitemk2 y 2bz)juuh9 h2n0s7j.n on of a marble on a table top for 10 seconds. What is the marbles average acceleration between ty kj7u2 .0uz)esnth2m jh2b9n = 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 unif b8+xfi44ujbe ormly 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 strax w )oy9ym97naight downward with a speed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.03: Which of the following graphs could correctly represent the motion of ai )w wy5ryko b-h. :)e tgl4hd2nn-yw9n object moving :ww9hwhi y erkl) .52 --)dgtnyy4 onbwith 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 gev,jttz 95e/ praph describes the motion of a toy car across the floor for 10 seconds.et5p,ejtzv 9 / What is the acceleration of the toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a t hti1 +a,emtj.ba jg.4oy car across the floor for 10 seconds. What was the total mtti.ea+bh.gja,4 1jdisplacement of the 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 .nzzd1ecwx 0q*::znf the motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net fzw *zzc dn:nq x:f.0e1orce 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 unm0s*urris a 8 en(y66ziformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices best represents the acceleras nas0re6z8r ui( *ym6tion 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 followin dqt;; ve)yxw3g statements regardx;evqwty )d 3;ing 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 velocpvav9kgj +v rez+-ekp(v) /;lity versus time curve shown to the right. When does the car have zero av(e) kp je/vv +9r z+kv-pgl;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 intervallrc es59 qkc7. of time, a tennis ball is moved so that the angle between the velocity and the acceleration of th.qrcl7e9ks c 5e 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 kilometersx mtrm b-:-o6mnnvp jco975bc ct,d)2 apart and traveling toward each other.cmot:xcnm62mr95-)7 tcj o-pbn,dv b
is moving at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.04: A particle moves on the x-axis. When the acceleration is posit:6;r gblv7q jh85a lrdive and increasv8j6 a:r5; bdl7hq rgling

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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 ip0d9fuw nl0/ua 0o 9ods

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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, whichbf6vma8o 98/z fy df89 6ijaxh one of the following choices identifies quantities that must have /9d aax8vh6fby8j6f 9z8 moifthe 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 hoylt3 c97)in $3.0\;m$ 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-* b;jrfoa5m+dtime, $y\;vs\;t$, 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 on d/ kwcar*ix-x+as;m(e-dimensional track for total time T in two pmdkar;-+wxs * (a/c ixarts.
• 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 grap x. vbfyrd59vbm1792af;dti uh for the motion of a car on a straight track is s1 vi9 ybfbfvutr 5.2ddxa9;7mhown 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 ofnf46;zr hp v:1qz2:nefavs03 6f axxu a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts atfs6vv23u0a6f :zrzn1 e 4qn:haxpf x; 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 v0jti:rb+j7q vs. time graph shown. 7ij qjb0v+rt:For what 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. tim+fjiqvl p9.g)e graph shown. For which time(s)l+giq9.fj pv) is the acceleration of the object equal to 0?


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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.24: By computing the area under the acceleration vs. time graph for a fsag+gtmvw 23ff h)0(qv3y4vf, ey -zi ixed time interval of an objey(i svz3 g- 23g)em+4hqt ffv, yvwfa0ct’s motion, 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 along a horizontal line with increasing speedzk8br5 3nms4z .
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 pur ;pf)5tpbhsl ; ;1oearts:
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 /e8ngu cm*+cng bkl5: 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 released75w hx6*k*8oe j0dl4cuozhlz from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle moving alonq(q+g0a;b o qu k(cg6nyc,*gjg a horizontal axis is shown. What is the total distance traveled by the particle from t=0 to bg(qnu0k,q +y*o(q a6;gjccg 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 identifies alj8w-oxvr0: -p l fb9ycl of the listed situations for which there is a non-zero accelerylo9wc bj f8v-0-p:x ration?
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 mov6v .;m g ufn)h*m;1cye5j1pc h y3bqczing 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 mb v5 q36;cj nz pye h)c.mg1fu1;c*hyits 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 alon/gd..8rqe kwug a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for whic qk .u.w8rg/edh 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 the ri sqe/pgh2(u.ymi p,r0roe)2r ght on a horizontal track, each with constant acc,ge (2r0 r2meupo)yh./rqps ieleration. 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 7j t5ogdprc/xmyrgid:7q (55 a 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 the graph, which one o.pl:5 bdkxnlep8ax 79f the following choices correctly describes the relationship between the average speed of the truck to that of the car? aln7 kpe.9b5dl8x xp:


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describes the ihg(raqt-8ta 9. :gd ibnstants of time, at which the car and truck tr hd-tqrg8bigt (:a.9aavel 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 moveb0ol z6ad5(j5/m vctd along the x-axis. The acceledvalj 5czmt 05d 6o(b/ration 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 moving on-wn-)uxszq00h brtux 9l2 a)f a horizontal line is shown. At what time(s) is the object moving with its greatetn-)-02 u xhrlu bzx9a0wfsq )st 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 followya:h;0ylp azchr. +;zing the position vs. time graph provided. During what time interval(s) does the 0 ;:hz. ary;cpzha y+lmass have zero acceleration?


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