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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 aa * ucuxikg4wz/ :2mt f;s0l9mround 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 referencr: 0h ph f5jgk.td1hk*jh6 a2ne to a particular dirgk2rjdkh .1 0t p6*5f h:hhjnaection 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 completw8tcfki -5: jaes one lap around a circular track at an average speed of 50 m/s and then completes a second lap :w5-aj t8fikc 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 inxjxzcf57* s/-/ yj zvb 1.0 s at the constant velocity. If it continues, how far wj-jy 5xx/*z/z7bv cfs ill it travel in 3.0 s?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.34: A 40-kg boy is stationary on a 30-kg plank that is sliding0; o.yuy3x dhvn*j0.zei 1erq at 5.00 m/s to the right across a frictionless pond. The boy then tu0 d;eyz3ih0r ujv yo.qn*1x.erns 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 it5 9s. f8x/iuron/tljs the average speed of the motoristxn9s 8o5r /ft/tl .uij 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 rene i2hhn)5s9x1g-o d nfers 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 dire59engd in xs1-h o2n)hction, $v_x$ 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 referwc ja9)xu *or5s to the motion of a toy car traveling along the x-axis. The graph shown below is a plot of the car’s ve)jcw 5uao9rx*locity 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 travs+zcs(a ub)/n1rbc ).sig 2yo eling along the x-axis. Tcnb/g osb) (1sruz2).+ycs aihe graph shown below is a 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 w/s:r d:udo 6q6*lc reof the velocity vs. time of a duck flying due south for the winter. At what point *r6osu:rq:el/dd c w6 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 shows the position and e+7 us a.lopj;hlapsed time of a car starting +.hs7a p u;oljfrom 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 hg1rbl t 1/ wkeep2p((4zcxc-dp(l3vthe diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straight line. The average acceleration during the entire 3 second interval is closest we 3cg (2/bxdt(pl-pvckrez l(1 h41p 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 h1 j4l.u1bun qvelocity time graph for an object with the position time gb4 u11qj .uhlnraph 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 follo ;yrc+gjyik7 7wing information. An ideal elastic rubber ball is dropped from a height of a+cgiyjk 7y7r ;bout 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. Avd4p-5l u4pz jhk *vf *8,zsppgq;q t)n ideal elastic rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its originalpp s4qzf*vqtzjv-dg),h 8kp5*p 4;l u 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 u:rvx o-uti)k p 5 1ql8;v1xqyspeed 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:fa 6bawt /,anje6c;;d8wk c4ho 3 5hfd 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 re.p,syck l: )vjfers 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 scenarix)i2kzhq8u zs;i5p du fw+5r (o: 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 scenario: At p649slcfj rgl2tr;-g $t_0$, 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 andsummoe0p9( ) m5y ,dfx off the table edge. Which of the following would best represent a graph of the magnit5)uepmo,ms ymfd (0 9xude 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 rela 0w ljke)zn.2 ; xmffmn7.dwu6tionship between distance and time for an object that is moving along a strai 07 w);mmn.26wn fxudjfzkel.ght 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 reprej42wx5hu ,;wizz ; zajsents the relationship between distance and time for an object that is moving along a straight line. Between what times did j 5jwzhz; ,i;wau 2zx4the 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 downw/3o8 nviazpt.ard on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speedpavzo.t8/3 n i 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 fromt9 z.ou y(zj6glrm9i6 rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagrazl9z( g6uym9itrj o .6m.
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 reprm759bfregoiv*8 qk/ resents a toy car starting from rest and uniformly accelerating across the floo e mibq*r/7rvfk9 85ogr. 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 lycxqk1ti7 *q;6e9di and uniformly acceltq7x q6y;l1ik* e9 dicerating 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 a uniforv)y e(q9qkk r(mly accelerating ball. The position of the ball each sevq kk (q(r)y9econd 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 ballz;z rf vr 9bnv7-k/(qn. The position of the ball each s nv7n/kv-r9(zq r;b fzecond 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(9lbrac4run1 6bmmpl. s8x7s on a unicycle moving in a straight line is shown in th(r1 8.nlmsbmscau lrx64b 9p7e 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 unicycle moving in a straight line is *qs h8,ynmylt;/(mi()rkp i tshown in the nr/,( qt(pm khy i s)*lyit;8mgraph 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 f*5 fjm9m n:l*c;hkdul75 w nfwalls freely in a vacuum near the surface of the earth

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.11: The accompanying graph describes the motion of a marble on a table tv kfxfe. (.e. y2wx+yeop for 10 seconds. For which time interval(s) did the marble have a n xfw.efx(e.y2k. e y+vegative 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 marble on a table top fon ; dzgx/l2m:ur 10 seconds. Fx; :2umnzl g/dor which 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 y6v, 50 0g8zfyxynyscsk))a dtable top for 10 seconds. What is the marbles ave0syg)v,k6fdyy c sxny)580za rage 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 fr m1g(p qjr4fy,om rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown straight downward with z-; e/3scdc 3vywao7b 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 ortbt11j,,- p 0wmnjtce3ih0 ef an object moving with a constant spe w1tm ep10ice,n rhjttj3 ,b-0ed 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 car across the floazu6/;c t x;jvor for 10 seconds. What i;v a6uj zxc/;ts the acceleration of the toy car at t = 4 s?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.25:The accompanying graph describes the motion of a toy car5ua(3 0hpszh w f0tc01 fvmq*ec/z:wi across the floor for 10 seconds. What was the total disphw0 1:0 f50ctwzvfqmphzia/ u(3 c*eslacement of the toy car for the entire 10 second interval shown?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.26:The accompanying graph describesv) j(il0a;:- wzrnu ur the motion of a toy car across the floor for 10 seconds. At whrr)aiuuj ;0 ln:- z(wvat 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 accelerate-y9ep j fhwzn./ w*:j: cs6livs uniformly from 0 km/hr to 60 km/hr in 4.50 s. Which one of the following j lhp*ievcw: .9n:/z-jfy sw6 choices best represents the acceleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus tn dd*pbt0(4gl*b x:k6g l2hwgime curve shown. Which of the following statements regarding its mot2ggnk xlbt:hb4d *l *w(6p0gdion 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 a *oxe0d mfa66zlong the x-axis according to the velocity versus time curve shown to the right.*xa d6zm0f6 oe 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, 8.asx f6urq6 ,8dojuaa 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 thes,uaaf8.6d6xr8 o q uj 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 15sx tv u*b90p 7rj3r dl(;bz9wi0 kilometers apart and traveling toward each other.l0pv i3j (9sxd7rt;b*b wruz9
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 positivea wl4iibbfok( 1+ i0ridi*;n ( and incanb1(irk4l(dio i * 0 if+wi;breasing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of average velocrc*r) m4-2kq+kdki ioity 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 motiobrwni ;)f,7 opuqop**n in two dimensions, which one of the following choices identifies quantities tha*7n;*iofuqp )ro,wbp t 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 moves;k4cv:knyq2w g2tja)cq/nc 1n tb ;i: $3.0\;m$ 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-t hv57l4qu yx.yime, $y\;vs\;t$, 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 tmx/jaw bp50, vrack for total time T in twojpw5xm, a0v/b 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 vx g)cbx -y n/05skcf,hs. time graph for the motion of a car on a straight track is shogh0)f, x-c5xnk/cby swn in the diagram. 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. d e6mmewu)++ftime graph for the motion of a car on a straight track is shown in the diagram. The thick line represents the velocity. + 6efmwe)dum+ 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 positiony:g)m60f zu d))lxqd h vs. time graph shown. For what time(s) is 0g)yl)6h dx:fd q)zumthe 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 velociy 1mafvq hf)lb3se1 09ty vs. time graph shown. For which time(s) is the acceleration of the object equal to 0?bylm e191fsh) qa30vf


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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 (7-hxnn8ou haunder the acceleration vs. time graph for a fixed time interval of an object’s motion,nx(h7un- 8hao 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 wi.) v9mwxpl/flk nda-y3si;.gth 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 pax2+ vn rn) oq(17roid 5k9onsjrts:
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 5vh3 joro lp*j, a:u-eand 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 release2j-wpbq , *bced from rest and reaches the ground in a time of $2.50\;s$. Neglect air resistance. From what height above the ground was the object released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.17: A position vs. time graph of a pj*sh *9skfe-d,g 1m2j orus.s article moving along a horizontal axis is shm**j. s91 r-, sefsgosjkduh2 own. What is the total distance traveled by the particle from t=0 to t=10s ?


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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.18: Which one of the following i1 t/r0eqgr83kdjr 1n choices correctly identifies all of the listed situatirtqj0i 1/3d8r nrg ke1ons for which there is a non-zero acceleration?
Situation I : A point object moves in a straight line with increasing speed.
Situation II : A point object moves in a circular path with constant speed.
Situation III: A point objects moves in a circular path with decreasing speed.

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.32: An acceleration vs. time graph for an object moving along a line is hv6,soclrnxam kr0/0; dr,d6shown. The ob,v ko/r,c;m 66ndarrl0hx0dsject starts from rest at time t=0 s. At what 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 and its velocity along a line vs 1a6 3hkt( v,dngt8hoe. time is graphed. Which one of the following choices best gives the proper interval(sndt ,eah3 hg(ko8vt 61) 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 withg)5.0133rab tm ln vfgre(h wj constant acceleration. At an instant of time, the informatiohvlrf wre 3)gm t530ab(.gnj1n 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 posyy( xsd(;j)jppqa h8s0qro (5ition $x$, 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 onjuibm - dy4ijn1ig+0.e of the following choices correctly describes the relatio+nu imb-jigy0.4ji 1dnship 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 besc 6tt9k o0bcv+t describes the instants of time, at which the car and truck travel with thevc9o t6 kcbt+0 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 o 0mwdii qk9bc)0)0oll3tlqy: rigin and will move along the x-axwbq 3d lc)mt l0y00kil 9qo):iis. The acceleration vs. time graph for each car is shown. 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 object moving on a horizontal linv-7c(pi 3g4c1x/tj qj 00gqk.wov tyoe is shown. At what time(s) is the object moving cj4oot k/0qjq v iv1.c03y(wptx g7g-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 tkhl1.o .zs3zrup/z+ the x-axis following the position vs. time graph provided. During what time interval(s) does the masst.+lro sh 1zu./ z3kzp have zero acceleration?


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