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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 arou8t*+ve z/srgr.xeunfn (61z vnd 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 pax oq.0 na2r5turticular directiu tr0 qnoa.x52on 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 rvp6wh68fy+0i y ,v jeof 50 m/s and then compr +vie0y,w8 hv6jp6fy letes a second lap at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.03: A toy car moves 0.80 m i5wq v;dh a,dxh2ggj4g apz( ks(v31o. n 1.0 s at the constant velocity. If it continues, howpvzokg. 1(h4hq5,ad;dv3g2g(wj x a s far will 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 8 /fu psey1 0yv78jo:nheq+waa 30-kg plank 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 thes e8n1 + ph7yyvoqj0w euaf/:8 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 and 400 km at 100 km/h. What is the 7c7ftay m:0:s2 qchux average speed of the moto7 qy tf0:7 cux2sm:hacrist 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 xjk/3r3tq* iwy/ytpj(caa8f q zubn 30r q-(+x-axis. The graph shown below is a plot jj3 t-*xq3pna/ (a kz y3qrtqfbiy0 r/wc8(+uof 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 to(ekt y(cv+;cug.imt0 y car traveling along the x-axis. The graph ;cyguvt+i 0(emc k.(t 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 motion nijqhses2+) )of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction snse+ 2qh)ij), $v_x$ 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 vj/bgz ym3 nv*y8l 7px1s. time of a duck flying due south for the wgyn z bpj1vm7/*xy8l3inter. 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 d s zzjvj+;y* 45h;goy1zz eo5ziagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a g5 y; z5;o yzoz1zjhze4*+jsvstraight 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 refep-+.yp/jezg p sao 2.gr to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average a.+jzpg/-.gpsa 2 eo ypcceleration 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 veloci7td *i3, cepctty time graph for an object with the positio7dte ip c,*tc3n 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 infhdf08 c -u pfa1ty7ss7ormation. An ideal elastic rubfc7sfud7-8h a1yp0ts ber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following graphs would best represent the distance above the floor versus time for the above bouncing ball?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.29: The following question refer to the following information. An id.k- )ytfw/ddl g +**sfwx5pcneal elastic rubber ball is dropped from a height of abou- f )*+p cy.xtfwdsnkdlwg5*/t 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 t jx:u/pz)c7x1 :ku 5cc gmjxw7ravel 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 refers to the following scenario: A/z x0e *x;oera/.qtfkt $t_0$, 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 refji5tsftdbk9- y6/x9 iers 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 theq c3 e5d*tqeo. 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 mb * y24ura5)demh*qn 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 tabl*v8ze2 hj qwr385);itzscr 8bnj - nrpe top and off the table3birp88hn*v n 5 t -;ser8j2cjqrz)zw edge. Which of the following would best represent a graph of the magnitude of the ball's acceleration vs time?


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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.01: The graph representsuy) sq)6fa. 6htz)rk)s cbbb 9 the relationship between distance and time for an object that is moving along a straight list)u).rz 6)sfby6 9kqc ab)hbne. 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 represents the relationship betgg -poo jsf29j241cp c;ls /it1uuok+ween distance and time for an object that is moving along a straight line. Between what times did the object have a non-zero acc1cgco-ju;fsj1o i 24ok +gtp/l2us9 peleration?


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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 Eart tz9sx tlt;8j6h with an initial speed of 12.0 m/s from a position 10.0 m 8tzl9tjst;6x 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 re43newf5l :gd npresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the stdn:4glne 5f3w art 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 a toy car starting from rest and uniforms*v;, voo; odl,m8n0ii mg :rbch1pr/ ly accelerating across the floor. The tim,rc,ii*o:;0v1/m;lsn r pmgoh vb8o d e 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 and uniformly f8dxy1giws1r4y26k jbj p 86dsh-oz/accelerating across the floor. The time and distance traveled from the start are shown in theo rfx2p8y8 d yb6ids1wj / j6k1h-sg4z 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 uniforml6g ;) u1in tig1)bi y*vx+jkriy accelerating ball. The position of the ball each second is indicaink) i* 1;ujbit6rgi +)v x1gyted.
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 position of the bu3evobo; k9 wo57n yp+b /4kmdall each kn4u 9w5bv;e /myk +do3ob7op second is indicated.
Which of the following is closest to the acceleration of the ball?


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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.17: The motion of a circus clown o 6s t a6;:kw3)xkqw)/ss emhvehx:lj.n a unicycle moving in a straight line is shown in the graph belowlet s;xs hqv6:6wa k)j/ 3x:.wksm eh).
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 a5febof um-4 lj( 2q;tt ubx.6q unicycle moving in a straight line is s.bm6x-qjo( 2uuet5qt f f4;blhown 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 fy95xa58qhtyge6vs oq 3.u 0:dnbw pz,reely 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 ofy+vu q6lp13buj-um5 k a marble on a table top for 10 seconds. For which time interval(s) did the marble have a negamuuuy+ kp36b- j 15lvqtive 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 madgh2e/j6yzaqq)r , 3krble on a table top for 10 seconds. For which time interval(s) did the marble have a posi,e arhqd)g23 j z6ky/qtive 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 m5qo d(* m+ce2 oz3s*yd8 9yuwnk paur,arble on a table top for 10 seconds. What is the marbles average acceleration between ku c d(5ay, zyose3**r+w qpud n28mo9t = 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 froocj h y:41uom 6x4gjj)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 straig:rm a:n ve+paaj*)f/tv1iy5 tht 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 moc9xp.jh6h ):ie)l7qefqevi u 7 3mbc3tion of an object moving with a constante.iqh7f p mjbeh 9i6)x7):levcu33 cq 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 descr0e2+d4ow tj:7vk hjzkibes the motion of a toy car across the floor for 10 seconds. What is the acceleration of thv jewo2j70tk:4+h dzke 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 fsj iyn8ljdq+*o1 (e.oy car across the floor for 10 seconds. What was the total displacement of the j j1*ly fq+ d8(i.eosntoy 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 the motion of a toy bdnbjors + -h4v2x)0dsfq :v6 car across the floor foqds)svhox 4- b b:6jd0vfrn+ 2r 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 km/hr to 60 km/hr in 4.50 s6gm3rlg/:h7o fftr 3 h. Which one of the following choi6fo /73lrfr gm:3gthh ces 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 veloc)7joi2-) v ui uvusc-mity versus time curve shown. Which of the following statements regarding its motion is uu-7i jsv2)ci-oum) vNOT 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-axisp 3kk (gq q)i0 :u t4hhulsl9g6srob;4 according to the velocity versus time curve shown to th9pkkruq ho6lsl0(4sb 3;q ugg)4 :ihte 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 of time, a tennis ball is moved so that the angle be7hf ;3dsrbne sc9x+;unmq5:ctween the velocity and the acceleration of the ball is kept at a constant 120 degree. h3 + 5b9qd nf;7ems;cs:nuxcrWhich 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 t.i4j 3ve.k1twk)gwjs r(dol nw + v4dl/he(- kilometers apart and traveling toward each other.kr hke4j 4.3/ddit ewnww1(sl-j vvl t)+(go.
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 the2lm1 rn37j dtvd)7ma dfb0gm7 acceleration is positive and increasin)md72g7ba d0tn 1f 37mrmdlvj g

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitionln3 eqqg c4c/5f*c lw- of average velocity is

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.18: For any motion in two dimensions, w/dk6kn0b ln.9xvhr:cm 1t s j+hich one of the following choices iden vlxnkmsd9. b+n1:j/k0t6r ch tifies quantities 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 movbihm fr ody3zrt yj01tc1;dcl1*(*2q 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-i fxrnur (l-e)g b(o(8time, $y\;vs\;t$, 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-dimensib uvz+2;qv)w sr8 jz3ruu(4 uronal track for total time T in two parvurzuw) (bu 8v;srj u3q4+z2rts.
• 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 8,7mgq p(ickz 9vscm4 a car on a straight track is shown in the diagra9gcsmk i87 zmqcp v4,(m. 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 mo9novoid**zf 73i j3q gtion of a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts at originj*ovzo* 3i n39fgq7di $x=0$. 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 obj u r6wwd0p;ox8,k 4 uov28hygaect given by the position vs. time graph shown. For what time(s) is the speed 8w6r2xwg4 o 0 ku8,;hvaydoupof 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 ob*;c- mc l6s+o hqfxwi9ject given by the velocity vs. time graph shown. For which time(s) isfo;cslw +ixc m-h*6q 9 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 they1/)7j 2iy-ik i*j jsoh tvlg7 area under the acceleration vs. time graph for a fixed time interval of an object’s-1j*i vyktsoylh7)j/i i2 7gj 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 8,qsb 3i+b.xqzfws4nsrq6;m 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 ini9 ff3mx 6qnt rl-5dupla4*j, two 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 reaches the grgss65ognyk fy 0y6tx cvv1n* gj85 -w7ound 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 5+ rzu9gtk) fd7dm;u hfrom 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 grz9 8frjhb. o1s + yxc+rs8yy8waph of a particle moving along a horizontal axis is shown. What is the total distance .ywz 9os8+bsc 1fr8x+8hyry j 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 ide*k*es.zjfl j ,ntifies all of the listed situations fosej* zl,*.jkf r 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 accelerati(0lz+ax hvl4 pmc 8+kkon vs. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximu ckl4hl + xka0(mp+v8zm 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 a)) pewvl8y m5rf84oxh(9ziaqlong a line vs. time is graphed. Which one of the follo( 8mroe)yvq8xp4l)h fa zw 9i5wing 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 toqn 9l2wwgk-qu26icfm h:u .6 a the right on a horizontal track, each with constant acceleration. At an iuuwa :2k.hc fm6w9 ni6qgq2 -lnstant 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 haeejn9xgelkb+(y w4 fb+55m k 0s 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 ofbq3+ tvy5t r-3uj(bjs the following choices correc+( 5j 3rtv qtbs3ujby-tly describes the relationship between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices bee cu5lt :r10dhst describes the instants of time, at which the car and truck travel with th :5erl utch01de 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 wil o/-tb,j7ia wtl move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices correctly identifies the relationship foibo ,/wta 7jt-r 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 horizontal lint93 6e oi+k0k6l0ul1ajym yvhe is shown. At what time(s) is the objma91+6 t yjo0l6 klyvk 0uhi3eect 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 vs. time graph provi qhml0l ;o a(1ng4bpu+rl8 l(hded. During what time interval(s) does the mass have zero accelerahhnr(mlu0o l ;bpla+4l1(qg8 tion?


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