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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://autodiscover.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://autodiscover.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 freelhde fi5p m vcsbb0ss8.h1jlp99d;m9 yo90 bm -y for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared t0.mhvfspc s;dsmy bbie0 b m9 89o1l59 phdj9-o 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 accelex4/ml:3hzrae9s;f (8e n uc1at fp,r8 zlfv, jrates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car taapx3f1felrf 4 j : n 8e/zch8,9;uzv(m s,trlravel during 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 off a high cliff with no horizoj.kn: v;f lufc:4 9eobntal velocity. It lands 6.0 s later with a velocity of oc;k.9l:f ubjf:nev4 40 m/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 acceleratrq5,k:igfv ( cvm*/pf ing vertically upward at k p(vvq rfgfm/i,5c:*$10\;m/s^2$. 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 bd yoawb )t hq,l,55egc)ab:g;(uk j4 xody is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one) 45wbk,a: ) ,x(5bugygqthd; colaej second later the object would be moving with a downward velocity 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 rest a4osye*cq6r n)bkc7n +nd 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 th9qm m- 6m/apwre top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height ormm6w-q m/9apf 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 in free fall has velocity 4.0 m/s in the us4h(( sr/zvg ipwar4sz vh s(/ir(gd direction. What is the approximate velocity 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 must gqy9k ar1v6o5a $2.5\;m/s^2$ 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 be moving downward at 18 m/s. If izi*u4u unt(sg7k z kui :f,8l0t continues to fall, two seconds later th,tnfugi :870kl *ukiz u(uz4se object would be moving 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 f+qt5s mm)6rfrrom rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the objec f+ ms6qmrr5t)t 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 q 05lq7x g8kilkg is launched straight 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, which one of the following choices best 7 8 i5lxk0lqqgrepresents 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 ut r2 4hr)vemjtg*;8v.gne7x qpward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approte. q8gmvnvg2 rh;tx j e*)74rximately how much time does it take the ball to reach the maximum height 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 )i,f.fieli; zplane has speed 0.40 m/s two seconds after it begins t l)iiif.z ,;feo 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 upward from the top of a 100-m tower witu:1mp 9.v kmol2mshm:qo((uiamq:k5k3 ie q 0h a speed of 15 m/s. Coin II is dropped (zero initial speed) laqk 3(2:opsumk0qq9: m:mhu1mm 5(veik. oifrom the top of the tower 2.0 s later. 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 initfs4gt e3; zdy2ntn 1z 7t)1bhjial speed of another, how much higher wi1)te;zb1sj 3dh4fnnyz7 ttg2ll 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 delivery truck traveling at 30 m/s. After *o.n8pu *g-k xyjzn0q j1 :6m9fwqycr hitting the road, it slides 45 meters to rest. How long does it takjzymr joc*:g1p 0 x6q- *y.9k8nfwqn ue the box to come to rest?

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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/s near the surfa 0 dq1 0bi;bto1 dfh7xdaumf(1ce of tb;a1bh00x7qdtd of u1idm( f1 he earth. After two seconds what would be the direction of the displacement, velocity and acceleration?
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 i6-qz zpdl rjln5w3f.pfp 0** vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity ofz.*ldflr 0 fq6pzj w-in53 *pp each stone. Rank from high to low the 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 launch7y14adw+ vhnx ed straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, what is its maximum attained height above the launch1a ydxnv47w h+ 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 gl (cds9 dpqg-(round as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If thc l-(pg qdd9s(e time the ball was in the air between the first and second bounce was 1 second, what would be the time between the second 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 lauzr dy7ejl 00q7nch, a projectile in free fall achieved its minimum speed during flight. If t0z lq07j7r eydhat minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the 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 ver -in;k hk f3c+dfq;fz8tical cliff. The collision of the pebble with the ground;kzfikh-f8 c df3nq+; below is seen 1.50 seconds after 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 about the height of a parking garage.qifb uqv 2aee -ysbh;2/) :1pf One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time the feq p/vaq21-b;feyh2u) :b sifall 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 initial position isv o im0g8/;d8/pf cmmq x0 = -5 meters and it is moving away from the origvf8doqc/pm/m gm;i 08 in 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 object is pulled doem t:kxf,d,8n wnwards by gravity (down the plane of the 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 thnx ,8e,m :tfdkat 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 from the top of a tall tower. Half a secon5rl t+ pgz)p0dd later another rock, t0tlz )+rp gpd5wice as massive 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/smmf* ic y*6kt0 69gdok along a track. The cart comes to rest after traveling 1 m. The experiment is repe6m *og0kkf6d ctm i9y*ated 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 at 0.5 m/s along a trac*2lg 6jwqbebvh; tb16k. The cart comes to rest after traveling 1 m. The experiment is repeated on the same tra qb e2j61 *;bblt6gvhwck, 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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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 straight line with a consta+f69czia gzpn-upi1 6nt acceleration oiz+zf9p iap 61 ucng-6f 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 fromlia5 f(k /tlo4 a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is l(l5/k o4aftirequired 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 acc g7z2 hh+3iq( m1xscfyelerate 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 of the two objects is thi 2y g73h s(hfcm1x+zqe 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 horizontally with speed fjg k jzy8;r v:l3q: rzldm6.,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 follo : 6lgz8jrmy ;dv3,lj.z:r fqkwing choices best represents the time of the object’s flight 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. Thiq oh )8xkccwd*oj200e object remains in free fall until it returns w0djcx2 h0coo8qi) *kto 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/wp9ln0gyz4 vqo eteh34. ab / does the object fall during the first 3.00 seconds of flih / 4tvoq/zw.l 3ba0ge9y e4npght?

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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 to rest across a flat surface in:x(az 1r*gqd m a time of 12.0 s. What was the initial speed of the box when it started its z( 1md q*:xagrslide?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.07: Starting frompb-i jds(alkl 8 o5u9e;i5 4ea rest, a cart uniformly accelerates to a speed of 7.60 m/s in a t e;d8kos4 l-(bliua 5ae9pji5ime of 3.00 s. Through what distance does the cart move in this 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 9s xi ;dn1sr7m/ijw- amoves to the right at 60.0 cm/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 choices best represents the magnitude of the average velocity of the car durin /mwx;rns7 j i9adi-s1g 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 se ;faat c2y.q/gconds 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 choices be;cgaaq2 f t/.yst 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 condk1y (iz f0k ya83ws)vstant acceleration starting with velocity $v_0 = 5.00\;m/s$ 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 upwarmsk5p oj;rti* 1 n-)xxd while in free fall. Which one of the following choices best represents the direction ofx *)-;x1st 5prnjkmoi 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 completut+njyi- h6fn (7htr7 es a 20.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 se yjirn 7+7ht(-tfhu6n conds. 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 secof rgjnqt8 (7)hnd 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 the right for 12.0 seconds. What constant magnitude q)tj7r (fng 8hacceleration 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 small rock is dropped from rest. A bazabo;ap /:m p(ll is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When the ball az/p o: m(;bpahas 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 self-driving car races ww 0 q3se;wn no .po i*4b./w+xao)nqmsith a robot. The robot accelerates a+ wi;nwo*.oexb 3q4wmso) snp/a0 .nqt $8.50\;m/s^2$ 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 launched5 ju,i-s:o0ne 1e nrj 2knbv-v vertically upward. The vertical position of the ball 0.70 s after release is the s-2:n-o u50rsvinj,eb ekv1jn ame as its vertical position 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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