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习题练习:Physics Bowl by Topic 2: Kinematics - part I General Motion



 作者: admin   总分: 72分  得分: _____________

答题人: 匿名未登录  开始时间: 24年03月31日 09:50  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.10: A particle travels at a constant speed around a circular path of radiu kkpj6:0s7j(lyu) tcf s $R$, 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 wcv.21hz-s+ f. rnv42oewkncnithout reference to a particular direction is callnv12rvcesk z oc4f-2.nwh + n.ed

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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 ave6yb hh45d-5- s4gej x7vogi klrage speed of 50 m/s and then completes hv6 xge-yo745i j 5d gs4-klhba 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 i(tqhi7tri h, )t continues, how far will it travel )rq (hti7ti,h 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 sliding at 5.00.ki/a8 ow:mfa 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 toaf8k. o/iaw :m 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 k)mbbt6y rcqpw+2y14h m/h. What is the average speed b cwmh tq p)642yy1r+bof the 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 motraj 51;d g dwr0oky rxf+4:1oxion of a toy car traveling along the x-axis. The graph shown below is a plot of th kdwj1 x+y r0oo;ra 5xg:4dr1fe 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 traveling along the x-e6 t4iaok5z 0p ft)iyc8;j .lxaxis. The graph shown below is a plot of the)ek8 a;0y.4it ozptxjic 6fl5 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 cxo9r0jd )h xfa sa-ek6v,:j s6ar traveling along the x-axis. The graph shown below is a plot of the car’s velocity in t xsaoj 0, -9dj6a6f)rvhe xs:khe 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 flyl-kh/v ek:n-xabbqe(6; n n fu9+nc(g ing due south for the wintehbua6q:k f lnkg-v; n(-eb+ ex/( 9cnnr. At what point did the duck stop its forward motion?





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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.17: This question rew1ud : v ;ivbx:rd-5gnfer to the diagram below which shows the position and elapsed time of a car starting from rest and uniformly accelerating in a straigi -vbwngx;:r1v dd5: uht 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 shoara jp)6ds3-f i24ztews the position and elapsed time of a car starting from rest and uniformly accelerating2z-jste 43f)pdai a6 r 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 g5e )cf9kptt9 oraph for an object with the position time graph shown in the diagram at rightf9c 59ttkeop) ?


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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 tc w1 f3i-p9itco 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 heighc3 1tp- cfiw9it.
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 queea kc c.g0(:ylstion refer 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 height.(cg0cl. eak: y
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 wit86obomx qg/lup6 k4 k7h 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 t22f jdorfpsbw rj3h;; b1( nt a/4oqh.o 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 scenario: l amcbp6s,h3 /o al)m3 d3elq;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 so4 c+d .fw 6x0cm mdcjtx15wl;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.
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 tzo5c,b3aqm;b ,oh a *ahe 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 rolls down a ramp, across a horizontal tabl3y,ck 3 6yrea+oiual j-gdg3 6e top and off the table edge. Which of the following would best represent a graph of cuk 6o3 3g ilejday+a,6-ry3gthe 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 diqnt3x2/.l.u e slg jn+stance and time for an object that is moving along a straight line. What qes+ utx.nj./ 2gnl3lis 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 distw y21 l )amxhvwy a7fym.+jm,9ance and time for an object that is19w2ym vyy7+aa,jl. mwfh m)x moving 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 dowvm8c/ :bp- o:hc9gopunward on Earth with an initial speed of 12.0 m/s from a position 10.0 m above the ground. Ignoring air resistance, the speed o8-pc9: bcgov:hmu o/pf 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 from rest and uniformly ar f(3 v-od0xmal/ s+/s zw2rhdccelerating across the floor. The time and distance traveled from the start ared2a o0rsw/+ 3zrhsd(l/-f xmv shown in the diagram.
What was the average speed of the cart between 0.1 seconds and 0.3 seconds?


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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.12: The diagram below represents a toy car starting from rest ax95gq7nr * sdlg0e s-p -+xqxsnd uniformly accelerating across the floor. The time and distance traveled from the start are shown ixs 97gqpdgxsl ex0n q+5r* --sn 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 uk 0zzrvgo)7 8/zu8qzfrom rest and uniformly accelerating across the floor. The time and distance traveled from the start are shzk7u8g08 /zq)rozvz uown 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 uniformly ac .bt svf2+c)km,zqhl (88dj snhhtj0 :celerating ball. The position of the ball each second0m)j( hfh :+hv k8nsq btt8d.2zj, scl 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 accetufwr 0bh ( :r3hq*h6dlerating ball. The position of the ball eachh 6hf 30(r*brqtd w:uh 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 a unicycle moving in a straight spzr3/9h(vh xq rnoel0 4j7e: line is shown in th4:h( nqrreev9/xhzp37 0lso je 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 li: 8bg. c),kinlk/nham + lp7zwne is shown in the graph bela hkk8 )nc.m7w zg/+:lpb,i nlow.
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 s+v so/d zrtc:h24m( qmurface 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 tob(bker7eb+kk l 8u7 ;ep for 10 secobbukee8 (77lr +k;kebnds. For 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 describes the motion of a marble on a table t)4q4xj m)a f2vh)s m+w 9panzxs4okv5op for ma+2wzxh5v4q) sj9aovf 4pxm) snk4) 10 seconds. For 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 desm-i -f5fz9k;s25lqx z-y eldbcribes the motion of a marble on a table top for 10 seconds. What is the marbles average acceleration between t = 3.3 s and t = 3.8 q sbyz ke5lfx-flmd-;-9 i52zs


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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 fr2fhi: sai, /mwnd0o*or 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 strai3 q mo9 5n27:ilde;rtsn-ibc3kt v.ckght 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 folld;vx/7kqna2;gqm x3 towing graphs could correctly represent the motion of an object qqga;72dk; txx3/nvm moving with a constant speed in a straight line?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.24:The accompanying graph describes the motion of qv/14wu1qw ku, dr oi3a toy car across the floor for 10 seconds. What is the acceleratioidqvro uk,1wq/1 43uwn 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 describ :oht9p:cnst )j/ti3qes the motion of a toy car across the floor for 10 seconds. What was the total dnqt 9t s3)ci:tphjo/ :isplacement 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 th67vyy::ueem(kb3 : ea t0tbgt e motion of a toy car across the floor for 10 seconds. At what times or time intervals must the net force on the t 3ebt :y7uvtt:(g kym:eb6a e0oy 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/h c82a 29idtcxicesbd1fo4 +vp; 5 xv;nr in 4.50 s. Which one of the following choices best represents the acceleration of to+9; 2x458xii2 1dca ntsc;bfpev dcv he 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 cu-ni+ iwp8d;gt rve shown. Which of the following statements regarding itsngd+wit 8p-i ; 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 thk x/kg*qh09a -od -sove velocity versus time curve s0qxv s*9d/koa-gh -kohown to the right. When does the car have zero acceleration?


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.22: During an interval of time, a tennis ball is moved so j7no9az:15ag n oyys0-i 5uosthat 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 this intervay 1 s-7jyzonuanosi9550 g:oal 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 toward each otz/qg0c*s3 bry her.zc y3/*bqg0s r
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 w29qlc0/ xtknrd a/e8 and increasin q/twad8ke xlcr09n2/g

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.12: The definition of averag w s/k k*qpb (igs02gp+ax8v,he 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 dimuj w91*0vhxgm ensions, which one of the following choices identifies quantities thvm*w1 h9ujgx 0at 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 movesk z5tq,7 -zplo $3.0\;m$ 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, 3, n)acmuwpi -$y\;vs\;t$, 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 total41t yqm7df f0 r ew -0,jp)ozotv(t0nz time T i ont0vtdqwz0of)p(j7rz 1 tfeym -4,0n two 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 pl: d y y2y:bmy)hue( c*i7wj;for the motion of a car on a straight track is :(j2yiyl)yu ;*mycwb:dh7pe shown 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. time graph for the motion of a car on a so9- chbea*.upsonj /7traight track is shown in the diagram. Thebco oaph ju.sn-e9*/ 7 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 give,0 1sul+zcv wrn by the position vs. time graph shown. For what time(s) is the speed of the obje rlu+vcwz s10,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 object givenz31*gqc knmhnoj551 h by the velocity vs. time graph shown. For which time(s) is the acceleration of the objzgkj5 cnh1*3m n1 o5qhect 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 un;:sodb .jh ob1sa8.d iy+vi 6uder the acceleration vs. time graph for a fixed time interval of an object’s motion, what quantity has been determined for tha6i8jdi+:h.;b o1bda usv.os yt 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 increavs t+a,-ky0a h19durj sing 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 t :sa :5iq 4iwd1mz- dp(qx-bja*.jfomwo 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 releaserhj7tq2vf a laoe5swv 9(5d(-jw w1i;d from 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 from rest and reaches the gr i3yj:ckfo*6kkj kr, ,ound 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 axis r-,w*v2a y *5kwublrt is shown. What is the rwu*wb*v,-a5y2lrkttotal 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 ,cj 2(z qjv eex9v.-xeidentifies all of the listed situations for which there is a non-zero a,x.-xvv e(9e jz2jqcecceleration?
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 0a3+ejir 7 mg) kuzsot (ba)5avs. time graph for an object moving along a line is shown. The object starts from rest at time t=0 s. At what time(s) does the object attain a maximum displacement fzra03+)a(m bi5eg) tajos uk 7rom 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 vq hw+x+p ra4 4t7dvi)zelocity along a line vs. time is graphed. Which one of the following choices best gav74rq) t+zipw+4hxd ives 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 rig4 xii:guq 5bp1;.+lnicx .jylht on a horizontal track, each with constant acceleration. At an instantugnc 1 x5 llxqi.i+:;ybp4ji. 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 ap74v t: 0camgo 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 j9n)e un;wb1dthe following choices corren)9u wbnjd ;1ectly describes the relationship between the average speed of the truck to that of the car?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.42: Which one of the following choices best describes the instants of time, amc shv1k65m,yf4 5qfbt which the car and truck travel wit vbyqf1, cmsh5k45f6 mh 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 start from rest at twen l x1jzs*p *-2)ulrhe origin and will move along the x-axis. The acceleration vs. time graph for each car is sho2-lepz*sw)jx l*nu r1wn. 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 linelp wr8 uffu:06 is shown. At what time(s) is the object moving with its greatest s:w0 8frlfpuu 6peed?


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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 afe6z 7u5adi t6long the x-axis following the position vs. time graph provided. During what time interv7u i df5t6eaz6al(s) does the mass have zero acceleration?


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