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习题练习：Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.5edu.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 396，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autoconfig.5edu.win/test396.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: admin    总分: 46分  得分: _____________

答题人: 游客未登录  开始时间: 24年04月05日 22:23  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  
  94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 furg). (n-,u;18j i cdc ovwqcfalls freely for 8.0 seconds. .vucngw-jqu),1r (c ;o i 8dcfCompared to object 1, object 2 falls:

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.02: A car starts from rest and uniformly accelerates to a fina4. .i4nll/ufm yl:bg pl speed of 20.0 m/s in a time of 15.0 s. How far does the car travel durinuyl .if/l44np :bg.m lg this time?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.03: A ball is thrown ob(ab 1gtpw 3 ucph0:x)ff a high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 mx p1 hb3:bu(w cpg)ta0/s. What was the initial velocity of the ball?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.27: A rocket near the surface of the earth is acceleratin7 xh8yw53ovsshx ow asj.g+1 1g vertically upward at5h+1w3yo1x ox s g7h.vs wjs8a $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.13: A freely falling body is found to be moving downwards at 27 m/s o+8z 4ro)0eu; rvuzub at one instant. If it continues to fall, one second later the object would be moving with a downward veluruzue8 o)40zr obv;+ocity closest to:

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.39: A car starts from/6 y3ruig* 0y5u ed;r6pqzdb k rest and accelerates at $0.80\;m/s^2$ for 10 s. It then continues at constant velocity. Twenty seconds (20 s) after it began to move, the car has:

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.17: A ball which is dropped from the top of a building strinh 4aq.+m5b1hcxe e(akes the ground with a speed of 30 m/s. Assumh.5emaae q+4 c1 bnx(he air resistance can be ignored. The height of the building is approximately:

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.09: At a certain time, an object iax+0p n4m gyl8eloi5f;ze 2.(fwbc9in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocitypaf f+m ;lgi20e45znoe.bl(xc9wy 8i of the object one second later?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.14: How long must1ffuga;lw0gn*cik 7npgy yi6 -y 9f53 a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.15: A freely falling object is found to bexbl ,qwuguqh+ .v(0g731 6 jfoy;nwnv moving downward at 18 m/s. If it continues to fall, two seconds later the object would be movgvqu10.(n36 qjgx,v+wu; w o7f hbnyling with a speed of

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.02: A small object is released from rest and falls freely fomg 2bzs+ md2 h,c3y0 :n.uzjsxr 4.00 s until reaching the ground. What was the heixmsmy+c3,u:.nd 2 2shgj b 0zzght above the ground from which the object was released?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.06: A ball of mass =0.100 kg is launched strq1a f62f0 4vftvlr(ni aight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, whint0 ffa(v2q4il6fr1vch one of the following choices best represents the magnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.07: A ball of mass =0.100 kg is launched straight upward so t9i pbzvtx) 9, fjto9kxu5 pk1,hat it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum heightk ktbf9o)9,p 9 zxvixu5tp, 1j from its launch?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.31: An object sliding down an inclined plane has speed 0.40 m/s two sec cjo,6m:ma6 bwonds aftemb, m:wa6 6ojcr it begins to slide. Approximately how far does it travel in three seconds?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.40: Coin I is thrown upwwe c(juimhf-ou*d ,w08 pso6 7ard from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s la(8,d0e-7j fmu*howi ocwps u6ter. Assume g is $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.04: If a ball is thrown directly upwards with twice the initial s p70:b af) tuduq)b/sepeed of anoteb pt7:qa0fbu) d/s u)her, how much higher will it be at its apex?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.30: A box falls to the ground from a del qjv0 4ix8lc-kivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to resxck4- vj8i 0lqt?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.29: An object is thrown upwards with a velocity of 30 m/smal )cd5v;/lox zbi* 9 near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acamc/vozdb) x ; 9*ill5celeration?
displacement velocity acceleration

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upf df 6ajv+0jb,ward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low th+fa6,v0d jjb fe maximum height of each stone. Assume air resistance is negligible.


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.25: Two point objects are launched straigh:i5 g+0zm6ht fdy qb(knd3s i*t upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above:h5k+0si *digdf nymq z6(tb3 the launch point. If object 2 has mass 2M, what is its maximum attained height above the launch point in terms of H ?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.28: A rubber ball bounces on the ground as shown. After each w+bu0e1 esdc(bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time between the secondce(u e+0b1sw d and third bounce?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.21: At 1.94 s after launch, a projectile in free fall achieved its minmtn7 o3 -)affy;vn c3uic c.s,imum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from fn7a;tso33 uf c-.iycn )cv,mthe horizontal?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.02: A pebble is dropped from a high vertical cliff. The cr hu3 9;u)dwyvollision of the pebble with the ground below is seen 1.50 seconds a 3; uywrh)u9dvfter the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.03: Three students were arguing aboutjutr k.f5/gk3 the height of a parking garage. One student suggested that to determine the height of the garage,3ktug .jf/5r k they simply had to drop tennis balls from the top and time the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.07: A snail is moving along a straight line. Its initiiv0 h* m:+jf3cwdw 5koal position is x0 = -5 meters andjvfmw 5: 0oc*iw +dkh3 it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.38: A small point-like object8ok1g e5s)oxp4 5 lbdm is pulled downwards by gravity (down the plane of the15g 8 4kmd5spe)xbolo page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to longest in terms of the amount of time (T) necessary for the object to be released from rest at point A and travel to point B. Assume that in changing direction that there is no loss of energy and that it takes negligible time.


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.13: A rock is dropped ft 0mm 0kgqrn,tlki8 yj5 m-(6from the top of a tall tower. Half a second later another rock, twice as l q68nk(y0gf m tm-j,tm0rik5massive as the first, is dropped. Ignoring air resistance,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.18: A cart is initially moving at 0.5 m/s along a track. The cart co xtm5rm1 ja6ze)/ndl ,mes to rest after t5tj1lmda nm 6x,/)zreraveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving at 1 m/s. How far does the cart travel before coming to rest?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.11: A cart is initially moving atodl.) s yvl,5ki 9hnyoa-gb )4 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initialllakho yb v)s)od.5ln -9,y g4iy moving at 1 m/s. How far does the cart travel before coming to rest?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.03: A dog starts from rest and runs in a 5d 2+3khegh pb95.:hh1qgy3u kbknnnstraight line with a constant acceleration u b+5:3bhk3k1n g5hhg qnhye92n.k d pof 2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.29: A ball initially at rest falls without air resistance from a height hbwm2w21h6 pt7; jei gsdoc,5p above the ground. If the ball falls the first distance 0.5h in ppj ;g7ts w5cde,mbwo h6212ia time t, how much time is required to fall the remaining distance of 0.5h?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.38: Two objects both move and uniformly accelemi5o j1p9 m5ylbb8u v/3w2fmb khjw82rate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Object 1 has one-half the acceleration of Object 2. After some time T, the velocity om2lo p wb mbwbyf 5j92iu8kj5m13v 8/hf the two objects is the same. What is the ratio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.26: An object is thrown horizoe xqm3;apw*mcfw/7f 3 ntally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choices best represents the time of the object’s /wfp aec3mf m7;wx*q3flight to the ground? Ignore air resistance.

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.10: An object is thrown straight upward. The o uqwei/f- v)7wbject remains in free fall until it returnve/ qwfi-)uw7 s to its initial launch point. Which one of the following graphs could represent the velocity of the object as a function of time during its flight?


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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.03: An object is dropped into free fall. Through how many meters does tg6w) ng0fiwu ke6x-s tb+t m46he object fall during the first 3.00 second tww 6tnf06ugmxi)+e6 -sk 4bgs of flight?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.02: A box uniformly slides 7.50 m e 0t,mtk*8njxto rest across a flat surface in a time of 12.0 s. What was the initial speed of thjmn,ek8*0 xtt e box when it started its slide?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.07: Starting from rest, a cart unidfgh; b+0j6( lbul ab,formly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in tblb hfd,g ;+6ulb(a0jhis time?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.16: A toy car initially moves to the right at 60.0 cm/s. 3xm.oiv ,nbcea 90+ bmg(rh s(Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choicbn0+i c (xeavm.gr ,mo (9h3bses best represents the magnitude of the average velocity of the car during the five second motion?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.17: A toy car initially moves to the right at 60.0 cm/s. Five sy4-bzoll e5n0my eo-jy kt. 63econds later, the car ismy0 3o.jneb z5tyky6l-el-4 o moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude of the average acceleration of the car during the five second motion?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.33: An object moves with constant acceleration starting with velocity ct-//uun594uax j rm. 5wli xsu.mh,s$v_0 = 5.00\;m/s$ and ending with a velocity of $v = -1.00\;m/s$ in a time of 3.00 s. For this motion, what is the average speed associated with the object?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.05: An object initially is moving upward while in free fall. Whicd;4t91gxotpka fh6.yh one of the fo6p of xt4tghkyd9 ;a.1llowing choices best represents the direction of the object’s acceleration during its flight?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.26: An object moving only to the right completes pdduc pkn+:.,q v-+cka 20.0 second trip in two stages, I and II. The average speed of the k. :cvnkc+u+-ddp q,pentire trip is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8.0 seconds of stage II?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.32: An object moving along a line completes a 20.0 seconde 32648umc4sxjdwsmc trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constant velocity of 6.0 m/s to t 64msmd83 4js 2wecxcuhe right for 12.0 seconds. What constant magnitude acceleration directed to the left must the object have during the 8.0 seconds of stage 2?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.33: At the top of a high cliff, a smallvaz2rt )yq np/;4(ha k rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When then4at) a2zrvp;y(/h kq ball has fallen 28.0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.36: On a straight road, a sejqqoj/mi7r2 m9 l)6w2isy pc-lf-driving car races with a robot. The robot accelerates atpq9 m7 jw yj2 26sli/io-)rmcq $8.50\;m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60\;m/s^2$ until reaching its maximum constant speed of 25.0 m/s. The car and robot start from rest from the same location. What is the maximum distance that the robot leads the car during the race?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.44: A ball is launched vertically upward. The vertical position of the bal4u64 w xf+-h,dk krkbu cu-/wpl 0.70 s after release is the same as its vertical posiu-wk4fbk-u p, xkhwud6r+4/ c tion 4.10 s after its release. At what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?

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