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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 trac3)5j qy;c xskvels at a constant 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 perx(cn j(aprs 8x6b5 (td unit time without reference to a particular direction iasn(jx((5bcpxt 86 r ds 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 completezi 9 i:ur 733yn9w n;jvgstimv:o 1y88f auj7ks one lap around a circular track at an average speed of 50 m/s and then co 1ku iwa 8rufy 9 yj:szg:v377n3 jt;i8i9vnommpletes 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 move:,// g ba*eac7trwybn5ylb .ss 0.80 m in 1.0 s at the constant velocity. If it continuesb awnc:5yg t/*l arb,/se 7.by, how 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 plan,vud1d ;.sewbbg2u z *h7z)rp zkc -a+k that is sliding at 5.00 m/s to the right across a frictionless pond. The boy then turns and starts walking o- kp7 w;+ 2ug,d)zrbvbuz1z.hcsa * den 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 as)wd2l;w nnl 5t 100 km/h. What is the average speed of the motorist on this tl s5n2w )wldn;rip?

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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/dot- s*4es2 vewraiyg;+/s n refers to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x o2dge* 4v;it sn-swe+s/ar/ ydirection, $v_x$ 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 re9ykv20j)a 5s izals 3*f ii7oofers to the motion of a toy car traveling along the x-axis. The graph shown below is 3yoiak s5 7j)2v*fo9i liasz0a 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 of a toy car u/brmiw t(k;9)pk)y ntraveling along the x-axis. The graph shown below is a plot of the car’s velocity in the x direction,w9))tknpy(k/m;b ir u $v_x$ 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 qb*l aac+i)hj/qh5km* er(0k7ae,o nck flying due south for the winter. Atemen*7j5ca q+ ok (),0al/ bki hqa*rh what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question refer to the diagram below which sen7/ r 33mmirds6d0kz hows the position and elapsed time rm3ei3/0 r6s7mdd nkzof a car starting from rest and uniformly accelerating in 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 diagram below whj*zdtb/b f 7i)xt9udh1; zi)y7wgr;d ich shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The )t*h bzdbwix; 1dj7t/i udgf 7yz;9)raverage 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 t f 93r+:ncgqhan object with the position time graph show3+: tqh r9fncgn 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 informa dt j9lea5y y9lqr)med.9;on7tion. An ideal elastic rubber ball is dropped from a height of about 2 meters, rje)l9n;y79e.omd59yl tadq 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 information1paq r)0ncs5dz/wovk // 4h ix. An ideal elastic rubber ball is dropped from a height of about 2 meters, hinkwd51/h q vi4x//ops0z)c rats 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 speed of n +7fs3ism1mi$v$ 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 ng 9c* vp.q(cascenario: 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 scenarioj 4httwxzx b19z+ t+k9: 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 followint elrb1i0 na-0zf( vu8g 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 followidfi22ct 0s 8;2fo xvxkng 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 top andb.gt3y786uqwv 8pvisfd1 e, r off the table edge. Which of thrdi7u688vv 1.sywbq3g ,fptee 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 the relationship between dista, ja0upx/ gy/ence and time for an object that is moving along a straig u/p /e,xaygj0ht 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 relationshl+ep )yyyzfm )g,a-a1ip between distance and time for an object that is moving along a straight line. Between what times did gy , yzf1aalpy )e-+)mthe 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 thrv*hwza 1ci47 ckdv;. oown straight downward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistan*; hi kv v47zwcod.ac1ce, 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 stpxo9 k2v:j lx4arting from rest and uniformly accelerating across the floor. The time and distance traveled from the sj l 92x:4pxkvotart 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 .oimkjt 8tuz)cm4 yz9h* o3;n rest and uniformly acjm3 8t)h9yc zoi ;.4m*n tkzuocelerating across the floor. The time and distance traveled from the start are shown in the diagram.
What was the acceleration of the cart during the first 0.4 seconds?


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.13: The diagram below represents a toy car starting from rest and uniformlyc0zdc3,ce 2 hw accelerating across the floor. The time and distance traveled from the start are shown in3h, 2ez0wcdc c 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 shwp 6 qho(o56-r/adtj hows a uniformly accelerating ball. The position of the ball each sec-jop6a/hth (5rwoq 6d ond 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 accele /uf l rralwx4h)3-o+ dff6iy,rating ball. The position of the ball +uyl loirw/ rf,)6xad -34ffh each 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 on avdz/.q s3stgw3 ub;z 6 unicycle moving in a straight line is shown in the graph below.zdzwsv;33tq. su6/ gb
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 unicycxhh7;dfz 1 vcu77sc*yle moving in a straight line is shows77cch; df*z 1vhyxu 7n in the graph below.
After 12 seconds, how far is the clown from her original starting point?


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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.04: When an object falls freely ino7wi( asi*9ob7z3 cnp 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 m6a4bn0: iredwotion of a marble on a table top for 10 seconds. Fo6de b40wnra:i r which time interval(s) did 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 accompanying graph desctvkep b3u3/g*wkd**c ribes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a positive accelerp tb33 gv* *eukcd*/wkation?


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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 m uzsq epr uo,(:jl468zarble on a table top for 10 seconds. What is the marzlsj( or z:,6eq48u publes average acceleration 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 from rest for a time of ojdb9sd.b im)p6lk 9*$2.00\;s$ 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 speediiy d.1gx(c0a g slpp,een z it;(/4+h 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 couh9cc;lg 60ejed3n(e ild correctly represent the motion of an object moving with a constant speed0 (e;e9iclej3 ncdgh 6 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 the motion of a toy caryrcc7;a4,lxga6v ,vj6 b5 yer across the floor for 10 seconds. What is the acceleratx5c7 yr,a;r6c6 lbve ,agyv4j ion 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 across the t054 ipehi/wufloor for 10 seconds. What was the total displacement of th5e w/iu0ti4ph e 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 :bi1u,nof2 uhacross the floor for 10 seconds. At what times or boh 2:u,f1unitime 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 fromf kmc:z)y4 pp4 0 km/hr to 60 km/hr in 4.50 s. Which one of the following choices bepzp c)f 44y:mkst 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 versu.* rtczab4(zz s time curve shown. Which of the following statements regarding its motion(.ac ztr bzz4* 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 the7fo3xr.a(0v sjx w;ozo syu+8 x-axis according to the velocity versus time curve shown to the right. When does the car have zero acceleratiosxy8zx ( ovsu7f.j0w3or +a o;n?


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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:;i+dnlo 3h/hnr5eg j 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 hir /:dn5lg j+;en3ohball 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 za1 ipaf;*.,gdf0rli pwq2g 9 toward each other.ag2dp 9qf zr; i,wg.a*pf1 0li
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 and in br;8 7*ceawadcreasingbc *dwa;8e7ra

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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 (nk9 uwxr3z8vht*t d;9,q8 cq4a fqi sof 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 imzkdw7vn*7; jnz )o*,mg ka,one of the following choices identifies quantities that must have the same dire,wav7g onn**k 7)djmz,m zki ;ction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car moves ky-/ (w;ley ya$3.0\;m$ 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-timemmz1vf/wq3k-; kqe:- s eaam2, $y\;vs\;t$, 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-dimensional ;ge f-zk iv:,ntrack for total time T in t- ig,;nzef v:kwo 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 of a car on wsvk+ur:40 b:- x2bp(xtqnt ka straight track is shown in the diagram. The thick line represents the vetun04r-k: qb bp:+w2vsxxk (tlocity. 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 on a straight trac nz 75 af **rwn2lownx;tncoo).z6 1gak is shown in the xz 6. wn* ag5n a*1wzf7);ontcn2loordiagram. 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 ps.su rs-6a ewjk0toukt s 1;*ap+v, x8osition vs. time graph shown. Foras8w ;1saks6sk v0-,*p.x ruujtot + e what 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 velocihym63;bpb98zn c/da i ty vs. time graph shown. For which time(s) is the accei3/ z89 bycb6hm ;ndpaleration 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 acceleratis:358 57pdua n un)9q evpieujon vs. time graph for a fixed time interval of an object’s motion, wh i)npde us85p3uu7je :nq59a vat 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 aax, 1u5uqi f)e f9n3qmlong a horizontal 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 two parts:i3blikt0o 0gy+u puj m3++ /ln
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 fro1gdagz+c 3 /bc4 y eqt4lyiz*z45ft k1m 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 8x 39qoquv2kmfrom 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 along a horizontal axid*m-( ej1hnpwquv)7ns is shown. What (7-d nw v1h)q*m pejunis 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 tve7 x(zji71 rahe listed situations for which there is a ja7xe1 7r vzi(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 movin;5fefr lry 0y,g along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a max 0r;fey,5yf lrimum 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 velocr0u2b(buu8 w dity along a line vs. time is graphed. Which one of the following choices bestr u2 bud(0ub8w 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 rightb0: hsejz ,:na on a horizontal track, each with constant acceleration. At an instant of time, the information about the c: j0a zbh:s,enars 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 positi/8 ocjmfk8uoco1/ a+w on $x$, 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 fogpi1i;n+kixjf -f tci 1+e9 q9llowing choices correctly describes the relationship between the a 1njfxi;c91ke+9itpig q+-if verage speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describes the instants mk2i6kk/y + q.puhoi6of time, at which the car and truck travel with / i y6ok6pqmk2ihu+.kthe 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 ).m lsudb;itqu2d u, dn8d)x4y 3 0rgirest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shown. Which one of the following choices 3 uudb,tl8q g um.0xsi2rdi4)dyn)d; 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 zl7zu1e4 61 uwzoik q8of an object moving on a horizontal line is shown. At what time(s) is thez1e6uk7qi uz84o zlw1 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-ac(xk2os r hat-zy, s3(v- 2czpxis following the position vs. time graph provided. During what time interval(s) does the mass have zero acceleration? -az2 -zhp 2vrcsk(oy3s(x t ,c


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