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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 spewl) 5h*hw qu /8furhd7ed 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 pen x8lj (ar7/gpr unit time without reference to a particular directionl8nrj 7/a gp(x 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 aroc85uyla o 07x+kxp(lk und a circular track at an average speed of 50 m/s and then completes a second lap at an av5l akx8cpul7 yx0 ok(+erage 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 velocik:m 1jl696d,,fczfkj5dkj ;h+yhq city. If it continues, how far will it travel in 3j;kdjd, mklyh q9f5cjif6:,6h+ 1kcz.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 sl djki)h ps,45qiding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking on the plan5)4jsq pd,kh ik 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 travels 400 km at 80 km/h zn z u9xvtzl,799 w5uaand 400 km at 100 km/h. What is the average s u,tnvz95u l9zw 9zax7peed 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 the x-avrl )1.uh 62vv;het1trcd qb 7xis. The graphv1 7tet)2uh6; qbl c.vvrd1rh shown below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?


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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.21: This question refers to the motdi,32q5qa,y *s* y1ao y39 kacio tvpsion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocityqpa1yva*y dic k3*t s2o,9,syo5q ia3 in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motion of a toy car twi+o:-tr eyqud 5 -(vsraveling along the x-axis. The graph shown below is a iy5v(se t- udwroq+:-plot 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 z- bkij,r 58j*s q*sxsa duck flying due south for the winter *8jr ,bzi* s-skx5jsq. At what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram belowivd/.q;v vwf oi.;rzz84a6 az which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. What w. o .;;z48v ir6dza aivwvq/zfas 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 whituzn8do0m: ynvv 1p8),+fn n sch shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration n8vtmz1,dp8v)+0nynnf su :o 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 the nmcze (q3(ox4x;betkt+j4 p7position(t;t34qz +nbkxxpcmj(7eoe 4 time graph shown in the diagram at right?


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.28: The following question refer to the following inform6qjj;ok,5gh g7 je5ghation. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the flo6gq k je gjg7hoj,h;55or 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 question refer to the0pqurba6+ p -e following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the feupb- rp a+6q0loor 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 vhl7rb g;k.7o jek5ujy eu6r) nf(p50$v$ in still water, which of the following trips will take the least amount of time.

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.01: The question refers to the following scenario: Atn ll4bw9+pyy0q: +c vvnv yfu5fv84 x/ $t_0$, 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:g l* /ak*3pfct 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 thezwe+( l3ge44 ko ctdr. 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 scenaf4 kjq13 d-b m wqnz2uv/rqp2:rio: 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 horizont f,;snuy8c.:uny* vnq al table top and off the table edge. Which of the following would best represent a graph of the fu yuny:s,nv .c;8*n qmagnitude 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 relationshe2ros6xa)1 l eip between distance and time for an object that is moving along a straight line. What is the instantaneous speed of the object at t = 5.0 secon6seoe 21xrla )ds?


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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 r jg+ qzoc.)cc)elationship between distance and time for an object that is moving along a straight line. Between what times did the object have a .zc+ cqg)jc)onon-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 -uljap4aof23ybb3, r with an initial speed of 12.0 m/s from a posa2,l u3bf3-apoyjr4 b ition 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 repret7i 6k3s3q4g t91fy vnt qdxg(sents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram1gtgv9sfq( t7ktxq d yn643i3.
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 t9en4do8vcdn f ez9)) ioy car starting from rest and uniformly accelerating acrd 9 )n4)d z8onevcif9eoss the floor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from resl 2;jb-ypo,immv+f +qt and uniformly accelerating across the floor. The time and distance traveled from the stmo-+2 ,bq ; +ijlvfypmart 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( ,i h 8oadmi+/8aqlpzy accelerating ball. The position of the ball each mla8zd8,iah+i(qp o /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. The (iy krw,4u8hyposition of the ball each second is indica8uy rhw,iy (4kted.
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 clfy5usjqv6 a 6 :n:esv5nnf7t -own on a unicycle moving in a straight line is showsyq7-v56vn sanj t5e :: unff6n 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 izaitah(9.;zb2fj (d a circus clown on a unicycle moving in a straight line is showzf9i;d.z(at2h ( jiba n in the graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely in a va -t f*qpi6ueyz; p-q6qcuum 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 describk mwlunvg3;k-t l:1jq8,i f) ses the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negati g)mln j-wv8ul tk1;3,iq:ksfve 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 table wc j4bu1ptl25 odil 705w:wbo 5y yt2qxj8fz0top foi tj202z : qu810w 5yc7bx jo5fyl5wplt 4bowdr 10 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 mot( ywm0fa2/sk uion of a marble on a table top for 10 seconds. What is the marbles average acceleration u sy(ma0wk2/fbetween 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 timev tx- /)g7 w)covbq+lw 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 downwarda 7jralu62.f b 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 cdba w57dms ty;4:kw m2ould correctly represent the motion of an ob2wm74w;bay t5k m: sddject 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 grapneeim onog8. qojcisg34: + 3+h describes the motion of a toy car across the floor for 10 seconds. What is thmei+sqn3+g e:njoio 48 goc3.e 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 toy car w(s x7+apjnx5ndj. k:across the floor for 10 seconds. What was the total displacement of the tokn7 (wjs:n. ad5+ xpxjy 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 descriwmtp4f(o)fs 4bes the motion of a toy car across the floor for 10 seconds. At wh(m4fsp)o4tfw at times or time intervals must the net force on the toy car be zero?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.03: A car accelerates uniformly from 0 km/hr5 guzvh ryts)0 gm/u6: to 60 km/hr in 4.50 s. Which one of the following choices best represents the grt:vg y0umzush/65) 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 velosv3m 1, s*segrcity versus time curve shown. Which of the following statements regarding its motion is NOT CORRECT? ,s 3es *1srgvm


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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 acco,7 o eyjykfyi 0t.6za2rding to the velocity versus time curve sh7oty0aeykiyj. 6 ,zf2own to the right. When does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of0; ch)b0jgfm:sn8 id3sp r:hb 4twxz hooo9-9 time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 12 9hr 3pxs4zs oj bd90 gho)0mwf-oc::thn8ib; 0 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 kilomet 0hm7q jli7,ymf+ix zv(qs2+n ers apart and traveling toward each other.2 if 7sjzy0hmq +lnvx ,q(7m+i
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 accelerationwjwd t:p4n 4zr80ks(l is positive and inc8 (p: j04k4 wntslrdzwreasing

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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 if) 9ys mig3 4z4/imi875 xnhvcuoh+wis

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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 oju mqx2aqgl,,. )0 3 :suslzcgz4o5)w :nxgcune of the following choices identifies quantities0cuzm x),ao5ugscjzg3ql )xw2sun4,g :.:ql that must have the same direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car moves x)uwx,enf: 3de;jt t 9$3.0\;m$ 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-timk+58z. fymm wwe, $y\;vs\;t$, 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 tow n:2j e( emg5kf:ecfuj+ 64i4ste2ms the right along a one-dimensional track for total time T im5e6fgsj e+ kfms(i24enj4et2c u::wn two parts.
• Part One: The car maintains constant non-zero speed V for the first $\frac{3}{4}$ of the total time.
• Part Two: The car accelerates uniformly to rest during the last $\frac{1}{4}$ of the total time.
What is the ratio of the distance traveled during Part One of the trip to the distance traveled during Part Two of the trip?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.23: The velocity vs. time (:k kgk9-c:rk, dyz5.-h efyfu x4fa wgraph for the motion of a car on a straight track is s(x ez9k ,5k-kwc4:kyff arfd.yh gu-:hown 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 on1e)dchv l l+yfj1p 0vq1iy3-g a straight track is shown in the diagram. The thick line represents the velocity. Assum)11gjv+yhd-qyi3lf01p lcev e 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 o 0dh6 j+gwu(/bcr*q. qot- r,cthhz/6k7rmpp bject given by the position vs. time graph shown. For what time(,ccdbrq(gpj u7rth0o kq+6mp/ h-hr* /w .t6zs) 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 g8w3g wa9q+xnpwy fg:np+nt 4: iven by the velocity vs. time graph shown. For which time(s) is the accel np gn: 43px ++9qg:wtawny8wferation 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 fis -frn hl/bz5hpsu*;nq, m.i) xed time interval of an object’s motion, what /*p)f iu z.rs-lhmnb;5,hqn squantity 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 wit: fijo8s g6b:ph 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 p pgjs;.e z+)a)lf em(i9mtoy(6oo 2ajarts:
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: x w.dw;zf3cwpv)n/p 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 reachesdnbi93 8uba b wie+c: 0ue,s0f 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 alog w3g6sjq j2pk vj5,rb/y 0la:ng a horizontal axis is shown. What is the total distance traveled by the particle from t=0 to t=10s ? 3 k,jrw vbl2gg/ 0ayq:s6pj5j


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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 choic/k +j3t4ucz/iwvbf 5hes correctly identifies all of the listed situations for which there is a 5tkizj3/ w uvfbhc4 /+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 moving along a line is ,j6:3w .d zh4 pypdk7zbgln/ishown. The object starts from rest at time t=0 s. At what time(s) does the obzypbhp :k jd gli/d. z3n746,wject 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 and its velocity along a line vs74es.i +nop ag. time is graphed.i4+p7 ae .ongs Which one of the 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 moving to the sk vxc/ 4e-k,dright on a horizontal track, each with constant acceleration. At an instant of time, the informatd/ skcve,4xk- ion 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 posiv 6otjk.v d5(ol+(n)ew zc pu5tion $x$, 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 inqs+28lp.opa+od c9at )pu wp3 the graph, which one of the following choices correctly describes +8 paqt+3.ps9 o2wpucao)dp l 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 choices best d sl9g,kw ccbhm48s a)9escribes the instants of time, at which th9cg)hw9a4 ,cbks lsm8e car and truck travel with the same speed?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.30: Two cars P and Q, each start from rejc7:v*-p 3tw rsy a1rfst at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following cv-p1fyw7rtraj3s: *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 a hords5ptpyiy/* av *1n3x izontal line is shown. At what time(s) is the object moving with ipyytan1dp53 **/xiv sts greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position vs. ti;6tsmi-rku x4me graph provided. During what time inter sx6km -ti;ur4val(s) does the mass have zero acceleration?


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