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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 aovds(.vtu fbh0qi,,p9 )ap0 z 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 per unit time without reference to a parq46h ldiw mwo0uitd.3x,d 7, bticular direction 4,i d3, twi0 mw.dbudqlxh7o6is 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 spee(y( 5agc r(s-h.rtaid:7ze axd of 50 m/s and then completes a second agta rh(:s7ix(d -(5.z rcyealap 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.i3 kku3cn4 .jf 5plhby x7p+a.0 s at the constant velocity. If it continues, how far will it travel inbpk .+u k phnj3ixcfy75a.l34 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 slii yq, 9nq5b8ptding 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 the plank. What is the speed of the plank relative to the pond i5q8 nt,pq9bynow?

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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 nr* 3nvbtr0)vkm/h and 400 km at 100 km/h. What is the average speed of the 3n0 v*trbvrn )motorist on this trip?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.20: This question refers to the motion of a toy emns8gz*-*dkcar traveling along the x-axis. The graph shown bel s*8g z*ke-dnmow is a 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 refers to the motion of a toy car tr(gq+ rwhbh7d7aveling along the x-axis. The graph shown below is a plot of the chhg7(q d7rw+b ar’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 iql0yitd *g6/of a toy car traveling along the x-axis. The graph shown below is a pi qtl* g/dyi60lot of the car’s velocity in the x direction, $v_x$ versus time $t$.
How far did the car travel during the first 15 seconds?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.15: Given the graph of the velocity vs. time of a duck flying due m(k*+u09i z mwcf7yko south for the winter. At what poi k(iw+*fm cu zmk07o9ynt 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 weulai9e awhr **)e4.fhich shows the position and elapsed time of a car starting from rest and uniforml *l9)aa.ruhei*ef4 wey 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 which shs 4q s/c9asslwr+ z+w5g .yd(hows the position and elapsed time of a car starting from rest and uniformly accelerating+ sl+s4 ry9gz / qwsshadw5c(. 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 oohc jtutjr)e 7cxvm*v)b646 *f the velocity time graph for an object with the position time graph shown in the diagram at rv 6)6)r7jo*c4butchjvex *tm ight?


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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 information. An c 8 hsm89d q3cchh 9mi 02gs1vm(m5ua0j5ciycideal elastic rubber ball is dropped from a height of about 2 meters, hits the floorcm8m(mhj8c3gh 9 qh5159m0siyd0ua sv ccic2 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 refeuc5u61p,f dfzv 8eu7 fr 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 u7du6 1u5fv,czef8 pfheight.
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 :p9fap zi*,g7rx(yhc tf2zsk7/,mu ewith 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 kw(el-9.j me+u; famhto 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 ref)ei:kqaeck3 n8 crs.0ers 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 scj14xe xanv-p/enario: 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 swpb x)w5*isg b::/qgy cenario: 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 e0kf:,80i 3zy 2,xq1dvwna(plihi az a horizontal table top and off the table edge. Which of the following would0 wzk0xivyai(38f1zd,lepnq ih, 2a: 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 distance alu qaijjyp ;: dzi5n)e(1 z0f7nd time for an object that is moving along a straight line. What is the instantaneous speed of the object at 7jz5ui d)j e; 01qa(fnziylp: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 time for an o p6ruvu*rla 5.bject that is moving along a straight line. Between what times did the object have a non-zero accva5 . p*6urulreleration?


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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 dok;z4zm6cgg ,u wnward on Earth with an initial speed of 12.0 m/s from a pzzku g;m,6cg 4osition 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 belu.c7 sl;mlf/ 5yabu:,e9hebaow represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled fromc9bmbfy hu5sl e,e/;ua la.7: the start 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 ai;x.uo ie/z;jb1l d:r toy car starting from rest and uniformly accelerating across the floor. The time and dista:biz x.;dr/; lijo1eu nce 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 cart:gcbcya ) joiks2qk 7:s;d-, starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the d,ta7by ccs::2dq o- ;kj)gi ksiagram.
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 unl7 qi scd,x3b7iformly accelerating ball. The position of the ball each se bis,c3ql7x7dcond is indicated.
What is the average speed of the ball between 3 and 4 seconds?


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.09: The diagram shows a uniformly accelerating ball. The position of9b pp5/bx cn7h the ball each second is in9xn /h57ppcb bdicated.
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 2 +orua js3mi5qj2n t4circus clown on a unicycle moving in a straight line is shown in the graph below.n42smj3u +a 2r5i qojt
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 stx m/8hr yj;0qmw;v 7++uokntpraight line is shown in n m;wuqjr+;m8/ hx+ 7y0vo tpkthe 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 t40zwy h7gr,ao1i, gid he 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 scolov r(4 09);gwheptop for 10 seconds. For whi ;rc40 opohg)vlse9(wch 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 describes the motion of a marble on a table top fof9v,-*q2ih ae s.oay xcbn07j r 10 seconds. For which time interval(s) did the marble have a positive acceler*x- q f h,2oicy7ba.9vajn es0ation?


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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 desc* v b29iwgwgdru*v :+bribes the motion of a marble on a table top for 10 seconds. What is the marble9 wrb 2v: b*wgi*gv+dus 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 uniformlmn2 (u 065shfoxakud/y from rest for a time of $2.00\;s$ through a distance of $4.00\;m$. What was the acceleration of the car?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.06: An object, thrown siib1 iw6w :.4bjgb;mg4.kbho traight 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 thb 7av0r/9 pllat 37vbre motion of an object moving with a constant speed in a st309 b7r/p rvv 7lbaaltraight 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 acl:zs ,lk gq5h)0oug: oross the floor for 10 seconds. What is the acceleration of the llo:,5s:)okzu h0qgg 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 flhlr(7ub-(5zj(p fqc jo 8-qgsec(el- oor for 10 go(e h5 c(-l- s-qbefjq8z ((lprujc 7seconds. What was the total displacement 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 describes the motion of a t x3hbc+qan zbpu2/++ ooy car across the floor for 10 seconds. At what times or time inte+o cbbuzh 3q+x2p+/n arvals 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 s. Whia8 dgjf3+4,)czpya k 9 nqpul0ch one of the following choices best represents the acca ukn 3 fcpy+jz4al,08dqg )9peleration of the car?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.07: A car has the velocity versus time curve shown. Which of the following zj d 4+o8qg lu0k:geg7statements regarding +04k:8 gzlujo7e gqgd 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 velocity versus *6/h*hv.vizlr t dxt+yu5r o1time curve shown to the right. When does the car have zeu1.5 h6rdoi*vlr tz+t xvy*/hro 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 bzu)oo+c5 q7tb0 l a6d)igrw ef2c+-a tennis ball is moved so that the angle between the velocity and the acceleration of the ball is kept at a constant 120 degree. Which statement is true about the tennis ball during thiur bf5tao cedz -2w b0+6ila+qg)oc)7s 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 tq7zor+r(j82qq d9h gtoward each other.rqjz q 9h7o qgdr+(8t2
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 imtet,t i9k/pp0o3x +the x-axis. When the acceleration is positive and increasp k t3po9i/e,0txm+t iing

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definitionh8*z i nyj58ao 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, which one of the following choicp)mc 9ab 7r e6hgum+)qes identifies quantities that must have the samma)h7pe+gu 6r)qc9mb e direction?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.17: A toy car mov 2 feb.e9tx;p(a;ice qes $3.0\;m$ 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-tig c9 nr- xye9q0cxmt1:me, $y\;vs\;t$, 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 track for total tie(axbq3jcodh62) qe 0me T in txdq3obq6 ej(e)ch0 a2 wo 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 oehjg5ho3 ys 4.n a straight track is shown in the diagram. The thick line represents the velocity. Assume .o3jgsh4h5ye 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 straipa6wmf x- p:kndq :t49ght track is shown in the diagram. The thick linet4x6a-kn:dfp:qp w m9 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 position vs.v fm/ iwtxw,8o+2p t8z time graph shown. For what time8+i twf8v/mzwot px2 ,(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 v cgt9k08cbcv0elocity vs. time graph shown. For which time(s) is the acceleration of the object equal t 0k0 8cgbcc9tvo 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 acceleratiof ahf4- l,- 01yqurlh4sfer,buvd*1k n vs. time graph for a fixed time interval of an object’s motion, what quanti-f4yslf -h, r dar11l*h,qe uu4k0fb vty 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 s1ln bh(6- l*zv-;uzeu ml*ri.vo gbt:peed.
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 twonqmpah 1nb44 6 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 ground in s( *5tjh 30jkwrra1xii nw+ikq4; ru) a time of $2.50\;s$. Neglect air resistance. With what speed does the object reach the ground?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.03:A small object is released from m g* :aat.jvfn:2 ei9krest 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 hon3cc,(wiy: e kaf-u ib(te1, vrizontal axis is sw1ef:i uacbctvnk (i-(,3e ,yhown. 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 t +z4t gm0zlhq9he following choices correctly identifies all of the listed situa9l +q 0z4tzgmhtions 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 kp9s;96coh0mnbp8g ekem kh j9)5sd .an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the objechk cm80k.s 5hes 6p mnjeb 99)9dopkg;t 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 a gu) borswzt71pd t): heg8a5i3,z 2dit the origin and its velocity along a line vs. time is gu:8dhw d gieozr5,3z gp) sa)27t1bitraphed. Which one of the following 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 to the right on a horizontal track, each with con7mcv5kriduq 3w .y drr0.d0d8 stant acceleration. At an instant of timerd3yuq0v ddmrr k7d5. c8.iw0, 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 has21n1uwqd wucc;/si- .v c9 ntq 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, which4cdflzw/5h*yh.ny b-1bo+f i t c o:s) one of the following choices correctly describes the relationship between the average speed of the truck to hf4b1+-ctsyl/hf y5 oc) zni*: wbd o.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 m17jo dc;0oppdescribes the instants of time, at which the car and truck travel with the saodo p10;jc mp7me 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 staxzf x 9*p6d jkz ;m(tul(1ve/art from rest at the origin and will move along the x-axis. The acceleration vs. time graph for each car is shownm9lz (pxj6tkxaz1f( ;ve*/u d . 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+2 skdq n.u0z/2rcku u of an object moving on a horizontal line is shown. At what time(s) is the object moving with its grea/2+u k u.2c qz0sudrnktest 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 gy 1dvu+/jz .sf,ich u8p+uvl,2-ll gi raph provided. During what time interval(s) does the mass have zero acceleration? i uh,sz,ul +. l/uylfcjd+ 821ipv -gv


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