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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 tlklo 2tj.r7 yjx e8(vc0nnu 4u8o2g* 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 per unit time without reference to a partimtv;6 , ndtw:txb-: xjfc(f )lcular direction is cxxtfmf )b;tn :tdjc vw 6-,l(:alled

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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 r:2sv 0bokk7 uaround a circular track at an average speed of 50 m/s and then completes akbvus072 o k:r 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 velocity. If it contine*3py*h b* oigues, how far will it travel in 3.0 bp3ge* *oiy *hs?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank that is sliding;ursa: uo so3(y9tel9 at 5.00 m/s to the righ9 o(9ul :u ;ytroa3sset 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 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 traveler/-v*z*fx7 lj t qma(s 400 km at 80 km/h and 400 km at 100 km/h. What is the average sp-*(j mv /f*tx7 zeqrlaeed 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 aa4b0o ku6sjpu e75s6byjyk9 a ,-yp4b toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x directi k bbu jb476y-eyjkap, po0uys496 a5son, $v_x$ 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 mo60*1snjgm z mjtion of a toy car traveling along the x-axis. mj *n106z sgmjThe graph shown 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 moblqm/mka6k 9bp; ,ostr 24jh:tion of a toy car traveling along the x-axis. The graph shown below is a kapo hl jm:rtqs; ,9bb/m46k2 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 a duckx ecibr,k1p9; flying due south for the winter. At whakxcp,ie r19; bt 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 belfh,* g4a rmt5 jnz,mxdmnf81/ow which shows the position and elapsed time of a car starting from rest and uniformly accelerating in /8d1m j gzna,xmm *fh4t,rnf5a 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 diagram below which shows thwi q-v35 yk,fge position and elapsed time of a car starting from r 3kqv-fg, ywi5est and uniformly 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 o) ntj5vfpz 10uf the velocity time graph for an object with the position time graph shownvtpu n5j 0f)z1 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 (;z3k6m 9) wjui3 ci8vwyl yf1dmz0poinformation. An ideal elastic rubber ball is droppe8pj3z0i ldf3z;9imc 6y yu1vkm(w wo) d 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 fob 2q0k9 wba180qa /et0 webgtxllowing information. An ideal elastic rubber ball i9t00wxe eqbtkgq2 bw1a/a80b s dropped from a height 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 )f yk4etn64dr+bi2k za 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 refersuniiln21 1x9k 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 refern 1weioiu0htb+ej*/ ,tk /n a7 zj;/ujs 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.
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 scenw.)v9z;dzdkw f2 0fd *kzku a,muxt*/ario: 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 fol v1:6fp 6oofcb9m1wt hlowing scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
If car #3 continues to constantly accelerate at the same rate what will be its position at the end of 6 seconds?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.33: A small ball rolls down a ramp, across a horizontal table uqx *xi 10t1xqhw0m ;ttop and off the table edge. Which of the following would best represent a graph of the ux m0h1xq;xqi0*w1ttmagnitude 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 az k6e, j+b4fw yfkt1i9nd time for an object that is moving along a straight line. What is the instantaneous speed of the 9f ykjkbezf i6+,wt41object at t = 5.0 seconds?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.02: The graph represents t0 zaka )s1;vi-japnns 1 qk2)dhe relationship between distance and time for an object that is moving along a straight line. Between what )1z 2a10sa;innjkv qp) ds-k atimes 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 o ,gq3e.zn/ x:i mhl0szn Earth with an initial speed of 12.0 m/szi0 seqgl:h3mx n/,z. 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 represents a toy car starting (0, rzg7yse fu.;wgi yv36 wg39 smondfrom rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the d.3 sieuwngwz 0y;d7s ormvfggy3(, 69 iagram.
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 cj+*o(kdgv 5 yqar starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the dqj(dyg*o v+5 kiagram.
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 rugc fg0 ; 9.j 25m;c3mh2ys8ysqzplgvepresents a toy car starting from rest and uniformly accelerating acro3cp 25jc u2 q.vy08sghlm;sf 9 y;mgzgss the floor. 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 accelerating ball. The position of the balu6, .sryle jc t:adf::6h(k iyl each s, r(hk6y ::ea6fsju.: tcydilecond 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. Tak:u* (c ;-hub2bq vmwhe position of the ball each second is indicatemuw*b:- hkvbc 2q;(uad.
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 line is sy22wriiy3:x i hown in the grap2iwi y3yx ri2:h 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 clown on a unicycle moving in a straight line smv73g7 ;fdpmc mwh ,2is shown in f72 hmw s3pv;gmc7m d,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 d49( u 2lq(/ e6v+lnumsfkebefalls 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 descritgc* a7r c4ihd*o z*757ey*uy.l aoapbes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negative vihla.* gay z** 4t77aep cdr*o5uo7cyelocity?


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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 tablyw4 ,kank k2( dbqq)j9e top for 10 seconds. For whic)q( qk k4,wdkyaj9n2b h 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 motion of a marble on a table top ukhajo 6w4/ s6for 10 seconds. What is the marbles average acceleration betw ju6a4wk6os/ heen 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 u;zqz0l 9 z6xna,9ohpuniformly 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 straig q lr,q*j8gk0tht 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 )/( )v u6rfbxftju jzc d;w2p:of an objec)ud ) rx; bzftfp6vjuw/j:c(2 t 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 grahqat-2bi. tz8y j7nz0u v-a1gph describes the motion of a toy car across the floor for 10 seconds. What is the acceleraza2it. 0ut q-1j- 8yg7bznhva tion 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 acrosssj,*7s h(:gl (qhlvhe(l /b eb the floor for 10 seconds. What was the total displacement of the toy car for (h *(7h s,l/ es:e(ljbvqhgb lthe 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 f39buhtdur7 1y/o6kq describes the motion of a toy car across the floor for 10 seconds. At whak6ubdtuy1/q9r oh3 7ft 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/hr to 60 km/hr in 4.50 (d6chp1u c rya::wa +os. Which one of the following choices best represents the ac:c ac udhr:6ya +1ow(pceleration 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. zil u dccab(4i+w8f:+Which of the following stcb+w +df4uzcia :i8(l atements 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- hvyp3u2dn io;ngw53635 jy svaxis according to the velocity versus time curve shown to the right. When does the car have zero ad 652nj33vipg n 35; uvyswyohcceleration?


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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 tims*wg cc*n q;9ue, a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis scc9gn ;u*wq*ball during this interval of time?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.03: Two automobiles are 150 kilometers apart and traveling toward each jgt(y. * i 58hyc0el1igskkb1 other.yk8tg.k1j e0 c*b i15 igh(syl
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 positive atw /h.j d97r19f5w0gwf7 ixfhbry tk2nd increasing.rwf2djbgh/h7x7t ri9 9t0yf 51wk w f

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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 r7p/:jei8yey lyjdq (z:9 pu0 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 two dimensions, which one of fl-d1(n/zq7 fbwo hz8the following choices identifies quantities that must havedbzf/1no ( l8-7hf zqw 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 mov ji2.hqk..zpk es $3.0\;m$ 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-timwqeu7p,- l6mae, $y\;vs\;t$, 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-dimenspyvf0z-pnza2-/ (9k jee5ccfional track for total time T in two par 0avec/ -2jzpcf(- 9zeyf5 knpts.
• 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 car on a straizj-r61xnm . rhb,uo,yj8* 6yh mniaw6ght track is shown in the diagram. The thick line represe 6 b.8-*,mj6h rhawz njoynx6rym1, iunts 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 o23 m+hpoant :pta fu(sn*1b +on a straight track is shown in the diagr1np3ufp: sat(ntob o2 mh*a++ am. The thick line represents the velocity. Assume that the car starts at origin $x=0$. What is the average speed of the car for the 10 second interval?


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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.08: Consider the motion of an object given by the positioutl ucti:e, i8(r;mh1n vs. time graph shown. For what;:cmihl(18 it ,eurut 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 velocie b9q7n1fbx(m6pdv5p kf 2xm *ty vs. time graph shown. For which time(s) is the a5fmf(dbv 16kx pe 9b7n2*qmpxcceleration 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 grap56i uwtuq/* wdh for a fixed time interval o* wiu/w6dt5qu f an object’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 increasi80 fn;hts0..jgtriztqz28 zv z)3ccxng 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 ;yd x*qg2my-v9,.kx(vgcum ps 7n 7 esparts:
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 r . hbj0u, *ur+qd9kpvgtp; c9zeleased from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from rest and reaches the ground in a 62qxqz +,mvkotime of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a particle moving along a horsu zlew l.6ax/m5h1s. izontal axis is shown. What is the total dm .5x 6lsw1esa /.lhzuistance 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 cor neo2ck.k 5/9da7nt kr*kfwm/ rectly identifies all of the listed situatf *5n n ./okrm2dt9 kk7kc/aweions 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., 1gx juh4j3 9gsojn 7*jfnyu line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacem7 nng9j3jgshfx*.u1jy4 ouj ,ent 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 anh4trv..wx3ba s;(l-zx h +xbdd its velocity along a line vs. time is graphed. Which one of the following choices bhshtzv bb4x -+w(xa.d.r3lx ;est 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 co:qu lu0x p)-1q wrl4hnnstant acceleration. At an inslpq u1 qr)w4 ulnh:0-xtant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a positi02vro tlvtr:js,0bl md/u2e 7on $x$, 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 the following chohhliri+e72 d ky.(hm pja447r ices correctly describes the relationship between the ave 27+ d4rjiy47i(k.lra hh emphrage 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 bevy8mjg. xo 2l-iwv;)s osa1x5bm3y.ost describes the instants of time, at which the car and truck travel wit5o sis )o2axg.;m.3 -o vwyylxvbmj81h 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 bw* jp)dazpx- ,-qph )move along the x-axis. The acceleration vs. time graph for each car is shown. Whichp-x w )zah, d)jqppb*- 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. 6b5jkx .3fq -;vbgsoi7 p*a3wk9f kxptime graph of an object moving on a horizontal line is shown. At what tbx9q;.f 3 g63pkbiv pfs-x5o *7kwakj ime(s) is the 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 *z a hk96w89f lc(,l/ojleffqx-axis following the position vs. time graph provided. Duri o*eq96h lcjf(8 f,z/ l9alkfwng what time interval(s) does the mass have zero acceleration?


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