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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 path of rad, b+ d6gb1 o epaxzy00mw4ki3xius $R$, 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 unitpen;tc- , o/c8 8.jcxq xs/bfr time without reference to a particular di-,cr8exfc;o tcp /s8/n.jx bqrection 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 o d,c i+778hrhz lbiy(vx) .vesne lap around a circular track at an average speed of 50 m/s and then completes a.dv7 (bch xzh r,)vel8 7ys+ii 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 velo6co 0e,j oba0sjg9b7 ;8cmmztcity. If it continues, how far w9c b;0jmcts o6zgj 0b8,mea7o ill 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 pl9dya0 /9m e5+rqg+givl euoo3ank that is sliding 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 relative to th0u e +ymvaoe9+5og3 9drlig/qe 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 aru1tzx 8v140 ;hkjzsvofp0nj+x/5 qm t 80 km/h and 400 km at 100 km/h. What is the average speed of the motorist on this trip? +o0 p0usk1;vhzm/xn8q4vrz5j fjt 1x

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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 7/ s6xfqcmpmn6bkq.l oe .1jnhy6bx6 l *py9(toy car traveling along the x-axis. The graph sqoy*1 b6xpq lmx 9bmn6ys h(pn . k/e6.j6fc7lhown 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 motion of a toy car traveling aln wz9e 1p17h 5/ a- ijuxt4ie6lg/8ky er*iwwdong the x-axis. The graph showezw1d/x5 ih*7 ui e-get1kw/yw 4 rip9l6 8njan below is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.22: This question refers to the motgm4y2i2**cuz:t s(y o 4 oi(vaq)bmtkion of a toy car traveling along the x-axis. The graph shown below is a p ym(buv4 :iyq2c o**m go4iak(s2tz)t lot 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 du-i k dgzjyg,rmq0,71 df n1y*dck flying due south for the winter. At what point did the ducgjmk, ddz0,nry7y * 1fd-1q igk 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 below which shows the position and e do.p )m* cryuq ph02:ff.dmq3lapsed time of a car starting from rest and uniformly accelerating d*)mcd.0q3 h2pqfymor :u f.pin a straight 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 d mb4p)jx9swg ;iagram below which shows the position and elapsed time of a car starting from rest and uniformlmjwg 9pxs4 b);y 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 ae;. gs:w ho)g e ;t/gpvwf;1sthe velocity time graph for an object with the position time graph shown in the diagram at righfhgot; pe)aw .;1 gse gws;/v:t?


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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 inf9w hy 3*mdll cy 7o)3(ibg;zvi c3rc7-outfd* ormation. An ideal elastic rubber ball izd*7 g7uv ih o3clo3diy(-r wcbc;*m9ft3yl )s 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 question refer to the following information. An idthk mvyk)+ik-qs7ka:f;5j*)iq b e 5 keal elastic rubber ball is dropped from a height ki 5v*ak5y bhk+mj 7kt))q f-k ;qise:of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.39: If a boat can travel with a k6 love1lo5uun+gt5y1).t fqspeed 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 tz 4* s2dswx+1kl. io3bq- psxzhe 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 tsz5yhp:pj / h h(io2d.o the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
About what position after $t_0$ would car #1 and car #2 have been side by side?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.03: The question refers to the following u )+w-h r5yrzpscenario: 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 followingr,**ma(n4 ae voyg,yz 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 hxt:+2vpmzce34x91r r 1g6 p sstb-xjn orizontal table top and off the table edge. Which of the following would best represent a graph on-x96se tv1s1x32pjg:p+4bmtcz xr r f 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 time fovb7mkwyo2 kr0 xc0m+.r an objec ov+m x.k7rmkc0 wy0b2t that is moving 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 represy)rn sx9c5j8s ents the relationship between distance and time for an object that is moving along a straight line. Between sxc9rjn8ys5) 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 w j sc fwjn6.,9ou whl340,xkogith an initial speed of 12.0 m/s from a position 10.0 m above the groundfl0suk ocnh3 o9,x,6wgw4. jj. 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 8 7()hnve +,/ vadcmvfuwlxs;a toy car starting from rest and uniformly accelerating across the floor. The time and distance tr 7fsvuw/veahn8dx+ lc(, )mv;aveled 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 represents /mf1)xckj kt(j*g,m j a toy car starting from rest and uniformly accelerating across the floor. The timej t,/gc()fk*jk m1mxj 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 start37uakw9ian,r 5rp b+w ing from rest and uniformly accelerating across the floor. The time and distance urwwa975ak+b3i, npr 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 accelerating l6d1bal0/q cx1tt6z cball. The position of the ball each secondtdbc0c6l6zx a tlq/11 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 ba mp.btimd,7/n ll. The position of the ball each second is indicated,7m/m.b d ptin.
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 o7dj l(p0mdlly:y 0 qd)n a unicycle moving in a straight line is shown in the 0y:dl)d 7lplqymd ( 0jgraph 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 circus clownuqbg /k:k-nv +ir55po on a unicycle moving in a straight line is shown in the gr+-kkobq5nv5u gip: r/aph 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 fahczb*fi+5i32ir i q9olls freely in 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 mdk4p9e 2uh5l vqos 7(7b tgw jit6h1.carble on a table top for 10 seconds. For which time interval(s) did the marble have a neg h d5coglbjte2 k9iw.7p( t41u7qh v6sative 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 mp;h3 i tr3v-iymxp*p5otion of a marble on a table top for 10 seconds. For which time interval(iy5;3- pmv hix3rt pp*s) did the marble have a positive acceleration?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.13: The accompanying graph describes the motion of a marble on a taw7)qyo(a0;qlz wb cc-f+w4pcble top for 10 seconds. What is the marbles average accwc -oc4cflp;b0a qwqz)7 y+w( eleration 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 fro/l,3ttvwg.xr m 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 dod v w*a.wmg h1dd1jd++wnward 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 reprxy95qf 7ldt+- gqer v;esent the motion of an objece9d tyg7q+; x5rfv -lqt moving with a constant speed in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes ttxpk7 4xy so(+he motion of a toy car across the floor for 10 ss+ 4p oxk(7xyteconds. 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 + ag/m erw6f3fyj ivn -4cx1x7describes the motion of a toy car across the floor for 10 seconds. W-i7/ 6 v+nrxmjycw ge1f4xf3a hat was the total displacement 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 accompanying0j, 4oxwx ,wve graph describes the motion of a toy car across the floor fo 4w,xxovw,ej0 r 10 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 uniformly from 0 kmdzb k th8x (3g9d:xh+nfd.v9 *xxx7nc/hr to 60 km/hr in 4.50 s. Which one of + dnhfx93xcd(8xh7k :d*gb.v znx 9 txthe following 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 curve shown. Whichei tkru 6u( 9;hu-e9oo of the following statements regarhutok69r(e9 -o;eiuuding 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-axi* c,9k/j3ffn7cv7us z/g n daas according to the velocity versus time curve shown to the right. When does the car have zero accelerat9j7akufcd/vz/7 sc3fg ,*nanion?


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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 intew twihyjxk./nkfxy 6p+5 ani57 x s584rval of time, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball i+7jxy t nk/ywfi5 hkx sixn64w5.85pa s 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 apae:1o 0bdd4.e akztir41)36p pn rnfvo rt and traveling toward each other.i4to4d6z 0a eb)ek31r.fo dn:r 1pvn p
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 thu;;,1 hrgyhir e acceleration is positive and increar1;irhuh; g y,sing

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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 velocityb/2c21-m1vnilyiyxkg . g r /e is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, which one of the following choices*2/ p oweofc:9frjw+f )lu (mg identifies quantities that rffwo: 92 /c o)*uml+f(jg epwmust 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 movy /ii-*ogm7 s8 (mocrfmvt d* w86noe, qo9q*res $3.0\;m$ 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-time,+/ ek.wgo2o qq $y\;vs\;t$, 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 alon5 r;kpx76hjobg a one-dimensional track for total time T in twokx7pob 5r h6;j 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. timef1ndbb s .l2g- graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts- .gsdfbb 21ln 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 motihynuv5m8 2-f cf56z nion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume thu6 -8f5y2ih5fz mvnn cat 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 objecw (oe-0 vqrw)bs,r (aut given by the position vs. time graph shown. For what time( wr0s(rob)q(ueawv,- 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. time gra9fnyps ,i5 q,mph shown. For which time(s) is the acceleration of tsq9, i,py5fn mhe 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 accevtd6 g:xf)fn/leration vs. time graph for a fixed time interval of an object’s motion, wha: v)/nfx6 fdgtt 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 horizonte/)u jrn54tf..ekjywuo- h1d al 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 c /52 yb r.a 6wemn ymolp/i;akm2a-6ttwo parts:
Part 1: it travels a distance of 800 m at a constant speed of 4.0 m/s.
Part 2: it travels a distance of 1200 m at a constant speed of 20.0 m/s.
What is the average speed of the car for the entire two-part trip?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.02:A small object is released from rest and rcwufm, 0) mcf9eaches 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 relea+: 1didhsju ,gsed 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 alp0dicxl.* )cnyu+ :jy ong a horizontal axis is shown. puc) .yn+0ljixd: yc*What is the total 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 following choices correctly identifies all of the lirsn- w488m6jpu .. v 6fxclrgez86ohu sted situatioxj66r sc8 n.fuo -mvluwp 46rg88zhe. ns for which there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving along a line is showh 62qtww 5f fx (ipm:vs)fce,7n. The object starts from rest at time t=0 s. At what time(s) dt)6,2if cvwpws5:fm qxf 7eh (oes the object attain a maximum displacement from its starting position?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.17: An object starts at the origin and (0m-psx8wn r-n -zmgc its velocity along a line vs. time is graphed. Which one of the following choices bn- 8znx-0 crm-w(mgspest 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 right on a horizontal track, each with constan3 ,ggof- )bw(o/gggmt t acceleration. At an instant of time, the infog),oogg (mf 3-g gw/btrmation 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 hay.zmmv 9c+i 3yst/8a8u)dayks 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 of obrs4nk -3n)t the following choices correctly describes the relationship between the average speed of the truck to 43 obnt)kr-nsthat 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 e. ept8xi3wa ,describes the instants of time, at which the car and truck travel with the t.pi 83 xawee,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 origi z,ld(3fosn+kg 6g te*n and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the follo * 36ofkslgzed,(n g+twing 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 movj.lhza48fe)c ing on a horizontal line is shown. At what time(s) is tcha 4ezf8)l .jhe object moving with its greatest speed?


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.08: A mass moves along the x-axis following the position ;m 1mz vcm2mk /c.rbs;vs. time graph provided. During what time interval(s) does the mass have zero accelera srv/ mb.cmm1;z2;mc ktion?


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