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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 resth 3*k lgo6;srq, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1r6oqhl;s 3*kg , 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 acceler4cfx )di/dsg5 z9yw yj:khb7. ates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel duzx4 c dwbgd)s y y/:7.5h9ikjfring 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 cli)j6w 0ga0b pjwg *bqg.ff with no horizontal velocity. It lands 6.0 s later with a velocity owga60 gj.q*b )jwbp0 gf 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 acceleraqq bfh(mk-m:5+6g0 ge da0syf1u :m xqting vertically upward 5femyqdq-g0h:m:ub+ (sx m k fq60g1aat $10\;m/s^2$. 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 at /2 dnj4/bhk wb6svlr+n8n9,e dh( ly kone instant. If it continues to fall, one second later the object would be moving with a downward velocity closest to8 l/n4es,+9yvbb6(hw h kl j d2d/nnrk:

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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 and accelerates 8ruznbq rw.e4n9i* n9at $0.80\;m/s^2$ 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 buizo pat9 rmm63(lding strikes the ground with a speed of 30 m/s. Assume o9(t6zprm a3m 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 in free fall has velocity 4.0 m/s inohx bi/2.5uu-fpj 6 e)v d6dqx the upward direction. Whx.o6h /dui - bpj)ef2v5dxuq6at 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 abufk95d qj2 g. $2.5\;m/s^2$ 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. I.mx38 5 dwrozzf it continues to fall, two seconds later the objectrd.wxmz5 8zo3 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 fro:dd75iy2ygn j m rest and falls freely for 4.00 s until reach:yn2djdgyi 7 5ing the ground. What was the height 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 strai6x ;9csro zx u4hlkfj3 (2zbpnl1.l (jght upward so that it rises to a maximum height of 12.0 m aborjx;ul.(s o (2bjfzlx hplz6ck13 9 4nve the launch point. Ignore air resistance. When the ball reaches its maximum height, which 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 that it rises to o9tf:oj4odx )im -q. 5k8bvp na maximum height of 12.0 m above the launch point. Ignore air 4)x o5:mdoq8jko.-b 9pn ti fvresistance. Approximately 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 ;)y( fix.kfo:uufla+plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far doex f (i;fky:o.+uf) alus 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 with a fsd il(m 5liyv;xj8l97b 4f2l;x-wqf speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later ymq 8 iw-lxdj bf4f7(f;xs 9ll5v2;il. 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 upwardu)rbr q55t:kf s with twice the initial speed of another, how mucrf55q rtkbu:) h 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 :j,p y1e4zznv ground from a delivery truck traveling at 30 m/s. After hitting the road,1z nvzey,:j4 p it slides 45 meters to rest. How long does it take 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 velocihdb j2af 7).4vfmnnr9ty of 30 m/s near the surface of the earth. After two seconds what would be the directijd2mr)h 4 n.v79 fbnfaon 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 dif4at7ypk(oyntl) q0c( ferent mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high to low the maximum height of each stone. Assume air resistance is neg(qyt0 onl4)c7 akt (ypligible.


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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 straight upward with identicoqst3qt n fks a/-c+;0pxj:y4al 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 0t;:p3 qsn-/4yqcotajf xks+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. Afterx9nhdaw(h 7b 4 each bounce, the ball reaches one-hn7(dax 4hhbw9 alf 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 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 launch, a p7x245r ;6efnfqh5sih f xys6 s5+p cj5w2kpairojectile in free fall achieved its minimum speed during flight. If that minimum s52k chs6f;yspef56nwr2qp7ij4 s f5axhix5+peed 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 vertical b/)8wb fsv *ql5 bun,tu;mzq;cliff. The collision of the pebble wuntu qs;*m)b b/5l,8fvz;wq bith the ground 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 were3 3:tpvk0doq h arguing about the height of a parking garage. One student suggested that to determine the heighto 30 kpvdh:3tq of the garage, 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 ac(g xhozdie2 v)) c/vr43; ikelong a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleratiidh;)3o2/()xz ce4 rvievg ckon, 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 za l(6 k*4y/sbz.ptuzobject is pulled downwards 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 di utpz6 (ky.aszz /l4*brection 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 from the top of a tall tower. Half a seco4y71uvadbn) ogc i3s m-z(pf*nd later another rock, twice as massive as the first7db c-*4 yf)vmgna(puis1zo3 , 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 comes to ulbn*l ,5ak h9e 3*cz6ppt(rd rest afterdrcpz6l(3 ea*h* bptlu k,n95 traveling 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 at 0.5 m/s along a track. The cart comes top cpn;l*ycc0e d, 5bc7 rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initipndc0e ;c, 7c pbyl*5cally 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 constant ac(jsx)r 5g.xbu8ssng36oc. q a3zqcj -celerat5-b . s)aj suc oxscrgn qj3q(x86zg.3ion of 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 h aboyb 9g- saonw64ve the ground. If the ball falls the first distance 0.ys nb96a o4wg-5h in a 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 accelerat ajr+p- fm/kio7 - g9q/tpia .ww(c0ame to the right. At time t=0,the objects are at the same initial position. Object 1 has initiaqja- w/ac+fmiw70 /popmar. - tig(9kl 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 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 horizontal,mztty-kcxz,3j (z ,6lh+up + sxgem-ly 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 fol+ye, x uj ,6z c(zmp-3,-h+lmstxgktzlowing 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. The object remains in free f dj 8y+r0+peltbv5n;q pu,b)qall until lq ;evr+ pn)q8jy,b5 u+bpt0dit returns 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 dqv ld1: -9d6fehiw j4vropped into free fall. Through how many meters does the object fall during the flq-dfv4 h:9i61v ejdw irst 3.00 seconds 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 to rp u1pia1pr:z (6xvn x/inn8-dest across a flat surface in a time of 12.0 s. What was the initial spvxu1n- :d6 8innipppx1az(r/eed of the 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 uniformly tkn4y3 yhk, gtf vep7hm+3/oopy4r)0accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does they4tk7vh 3, +4tppk rhy)m3nf o0oyg/e 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 moves to t)tjt- ub17vtuhe 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 i)ut1-7tv uj btt started. Which one of the following choices 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 seconez:w n 8bt7el0 rlvj0 o5uq.cb28vrw2ds 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 b. l:00v 7 vlorjw8rb25we zt8c 2qeunof 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 accelerat-1g2h5.pwofc yau n,uion 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 +qd ex)t;c :cjmoving upward while in free fall. Which one of the following;ed+cxct:)q j 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 a 20. +rztunq.. ay5hk h:m+0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, t++uqhnz:.ky. m5r tah he 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 alongoa1)r ldef+gmk a- vn(d006 lg a line completes a 20.0 second 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 acceleration directed to the left must the object have d 1rna06 vld) 0kgmd(-lg+ efaouring 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 balk9hw,zx/jrezq.en t uhjn5l+32 hzak: (r 1n)l is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. Whezxz:k ,2q +.hzl n9153hn/(hje )r u awjknertn the 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 sehz l owo9j0*4mlf-driving car races with a robot. The robot accelera w4lj0zmhoo 9*tes at $8.50\;m/s^2$ 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 launchbxofz-meur1/: u)t +s+)nc lwr /l-om ed vertically upward. The vertical position of the ball 0.70 s after release is the same 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 duroxwoum r1 clf- m+/nu:-zbl)es )+t /ring its flight?

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