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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 consts3f8lcmx+ k *0c (t*zvu dmxx.ant speed 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 per unit time witho,cat0u f9 zg.2/e jhxdn.2rbcut reference to a particular direction is c .,nd .902hxu/ae2rgfb tjczcalled

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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 ane q pi6m4v9a 6k/kqr(xokc5 9n average speed of 50 m/s and then completc k6rvoqk9mp5aen 4/(6q x9ki es 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 in 1.0 s at the constant velocity. If it conti jknww: (vv)gxbctb,w8( j6)m nues, hoj8: ) nm vg)vjwb,6wbcxk t(w(w 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 a 30-kg plank that, newt3f3f wrse81dvp9 ff s5tqj8k05 is sliding at 5.00 m/s to the right across a frictionless p9pe1esf5jvntkrw53 f83w 08sf qf,tdond. 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 travels 400 km at 80 km/h and 400 km at 100 km/h. What is th2h9egwu6 mv0dcix h9+ b/6nsf2zckl 5 e average speed of the motorist on g9cxh2dzw 6i6/e 2um kv9fn0+lb 5chsthis 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 y1 ebsslp1j qz9,.yl;9s/ gnvcar traveling along the x-axis. The graph shown below is a sz1ypbs ,e /1l s;l9gnv9qy.j 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 refers4oxct trf :vn b54v0dixv, z32 to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of,vdtrvo 5xzv4bc2ntif3:04 x 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 of a toy car traveling al9q oa fhz7p2v0d- fijo:by 5s)ong the x-axis. The graph shown below is a h7): iapqfj0 fv52z9bs -yodo 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 xf baky;b tt)4,a 5t7pc6n-s pthe velocity vs. time of a duck flying due south for the winter. At what point did the duck stop itc6pbsat kt) 5 yn ;ta,7-xpfb4s 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 positio 9 (wcby/eako6 u4vzx2n and elapsed time of a car starting from rest and uniformly accelerating in a stke oz(c9ab6v yw4x/u2 raight 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 showsm0kgq*j 9)6fzvkz g2v the position and elapsed time of a car starting from rest and unk )jzm602qz vk9v*fggiformly 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 the velocity time graph for x.wh+t7uk-smu wuj :8a if)5e;.cdp +6ka kuqan object with the position time grf:k a-.jmea.kkw )5d tc s+u+xuq6u87hpwu; i aph 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 re z;p,mv zwb 1tir xf(wz697)svj .tg9b6fcw l9fer to the following information. An ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height69clf( tpr)jxv w.t6bbw9, ;m7zvzg91ziwfs .
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 ques+.bjezujsk.*qe zj;(, :qji htion refer to the following information. An ideal elastic ru,.e quhk:sejz *j.;q bz +(jjibber ball is 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 w9q+vudv9v(v j3s p; gyith 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 doja82w7ea )zqc 90j nto the following scenario: At $t_0$, two cars moving along a highway are side-by-side as they pass a third car stopped on the side of the road. At this moment the driver of the first car steps on the brakes while the driver of the stopped car begins to accelerate. The diagram below show the positions of each car for the next 5 seconds.
During which time interval would cars #2 and #3 be moving at the same average speed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.02: The question refers to the following scenarioh+5dt/tmy- r ftv7*4gd ra (gq: 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 scenario: A (riw(.mo2ka 5nq 0u*k:w/sh srly f9wt $t_0$, 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 fp(y(-9vexiwef1/3li fl h) w refers 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.
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 sgme3.y4i 5ki,7- 6jjg gsehhrolls down a ramp, across a horizontal table top and off the table edge. Which 5j si, ke-js4 ggy73ighm6.ehof 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 represents th qc1 uu*bx1sq3s;/jn3 l,xykfe relationship between distance and time for an object that is moving alon*l j bsn,3yf;1usqkx1q3 cu /xg 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 represents the relationship between distance and w aok f:(vs:vs7 qn+e4time for an object that is movios(kse74vaf :v +nq:w ng along a straight line. Between what times did the object have a non-zero acceleration?


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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.07: A small object is thrown straight downward on Earth wit z zw*b;(lgp4qh an initial speed of 12.0 m/s w(*lpgzqz;4 bfrom 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 h +2at w)mzru2mx9(xl7e)czhj qs(1y car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram.zyt1amu+h h7w 9sqr(x 2l) e2cx) z(jm
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 rep1iyetlep; (b uoape 5n6633jwresents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagraue3a3 tl1iwoj5ep6 y6eb(p;n m.
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 from8 ffn(2rxtp,h rest and uniformly accelerahfp(2tr8nx ,f ting across 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 )yy0 i 1am1swrug*lr* a uniformly accelerating ball. The position of the ball each second is i a*ly0*wy 1isr1)rmugndicated.
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 show . mkni6o (*7wzxatk+ts a uniformly accelerating ball. The position of the ball each second is indicated tx7.+omknwt a(ik6 z*.
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 srz fde -y98f99f+dlf r0a8xithown in t 8dd9errt0f 8zax+9fiy9 f-fl he 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 a circus clown on a unicyoz;85/ x8lsmrh,s5hne 1sfjocle moving in a straight line is shown ijn5o/8sh;omze hx1sr8lf5, sn 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 vacuum near the surface of tbh:;0 luhmn7 dhe 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 describe.. lvs5lr x+u5 /ceumws the motion of a marble on a table top for 10 seconds. For which time interval(s) d.5u /lev+ucls rmw 5x.id the marble have a negative velocity?


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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.12: The accompanyiy1*eqnu-7: qdsjt j,pao e1x*ng graph describes the motion of a marble on a table top for 10 seconds. For which to7d eu*, xq yjpj -*etqna11:sime 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/8jx0oot a5 bt of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s tj5bto /xo0a8 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 time ubtowl uevu1:+(.g* u 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 downward with a speiqvh3w 8k y8m sg u9h6s/7qh0red 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 motioi uh(dn md2+6un of an object moving with a constant speed in a straighh(6nu2 +uidd mt 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 desyi4p8-sl mdg -cribes the motion of a toy car across the floor for 10 seconds. What is thepm-l4sg id8 -y 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 motm4cy0sawc *d2( skfr:ion of a toy car across the floor for 10 seconds. What was the total displacement of d2sf y(*mc ks:rc4aw0the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describes the motion of a toy car across;wfm m);2ww0a d4nry i the floor for 10 seconds. At whan0md)4w r ;wwai;ym2 ft 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/hrh)gu yld8 r+ocb/.2 nk in 4.50 s. Which one of the following choices best represents the acceleration of therng 2l/ kd)cu8 y.+hbo 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. Whiig jp. bq *og/0gu(qwtb/ri+: ch of the following statements r+0itb// (gg*iqb.wg op quj r:egarding its motion is NOT CORRECT?


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.17: A toy car moves along the x-axis according to the ve;gt l d)ub24wooxg-ely93 zzdw(0z0y locity versus time curve shown to the right. Whegd4bz ;-0x3 zezlwt(g0wyd o 92o)ylun 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 betwt8r(bz.aje 0 nd cg7 ox5xrr-n ;s0(vdeen the velocity and the acceleration of the ball is kept at a constant 120 degrxd5 08jd tcn-; n(gbxezs. r0ra7o(rvee. 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 s f2l4fa7fprd:/1 oye150 kilometers apart and traveling toward each other.:7p4f 1da lysfe o2fr/
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 thet i0l(6liqa ujm/di*6 x-axis. When the acceleration is positive and increasinjq lmda60u li*t6/i(ig

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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 aver+m*oo9 iqbbz /:,bq qlm9s*b xage 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 the follt b c50-apm4c1z0/m ;irdkij7r 9qg iwowing choices identifies / da 0ziirj4t 1 0bi9pkmr;cqw5c- 7gmquantities 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 move1kxz ml 55.q2w5cz qgqs $3.0\;m$ 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, .v* pv),dh bi07 kvgidxfw43r $y\;vs\;t$, 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:sbh u.be) nz(uf1 i1i right along a one-dimensional track for total time T in tw)zs u:11 niibu.fb( heo 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 graph for the motion ofb7l k,nr91fn5cs e5jo a car on a straight track is shown in the diagram. The thick line represents the velocity. Assume that the car starts at originc9lf ,j7o b5en1ns rk5 $x=0$. 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 caqee5 n gym/qm;)ud84 a a*cp-br on a straight track is shown in the da eu4qbmyg)q*;/-c em85pn adiagram. 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 1o myctf/db9tl27kv8v q s i(;given by the position vs. time graph shown. For what time(s) is the speed of the objeyd bvqf1ts8(o m2 ki7;tc9 lv/ct 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 ob9hli)1r da4i o ha*:ttject given by the velocity vs. time graph shown. For which time(s) is the acceleration of theh 9tidlt*)a4h: 1oia r 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 kqr i09 ob;f 2ovu7+sithe acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for that objecv+i29sk of;u07oir bq t?

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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 hori rl eu)+yi xdy0wj(a84i28 sod+p,pu-quhxb 1 zontal 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 tripflinel+mt.5 3i8.d b a in 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 grou1ooj v y lc6s*6lsw-9f/ix:kjnd 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 rs xepa)/8un g+i;n*v oeleased 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 o)/oh, 8m mdo3 mepyomp;+7cs df a particle moving along a horizontal axis is shown. What is the total distance traveled by the particle mm + oo 8;)73mpdc,ph/dmyseofrom 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 6eorymdp 4j72z *ityf*a(z r(following choices correctly identifies all of the listed situations for which r4(*rpzm a6 f ojdit2ez7* y(ythere 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 v d c4-x.ftepoc yb9:;ts. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At yotf-c.d c :xe9p4b;twhat time(s) does 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 s*ut+ *tbd j/i*d y3rwand its velocity along a line vs. time is graphed. Which one of the following choices best gives the proper interval(s) of time for which the ts*+* r*y / u3jwtbddiobject 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 t6 qkcf tod*tkpyer3e t2)(2u(rack, each with constant acceleratio2)*qttudtee3y 6of(kk(r2 cpn. At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.14: A particle has a( bi+km9 n,q r2uqj2ck 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 the followin. zxkn k e-i;3yx5ak6xg choices correctly describes the relationship between the average speed of the truck to thx5xi.ek3ak6 ; zxkn-yat 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 describes the instants /6r vm(a86x6qc r dygzof time, at whi8 m/zxdgcvr 6q(ra 6y6ch the 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 v8n q(gf 8l0t3p5ljt(syx br:w 7/zststart from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown.ly3/bnpgs8tz5tvj: t r w( 8slq(0x7f Which one of the following choices correctly identifies the relationship for both the speeds $v$ and the positions $x$ of the cars at time T?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.02: The position vs. time graph of an ob7 v:;fm t*iecgject moving on a horizontal line is shown. At what time(s) is the object moving with its greatest sp:c7 gti*mvf;e eed?


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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 alonp 11ybe khja//g the x-axis following the position vs. time graph provided. During what time interval(s) does t1 h1 bj/kpey/ahe mass have zero acceleration?


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