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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 freely for 4.0 seconds, and object g-b9 wd++guyov3u7jsdp(r j- 2 falls f(u+7j 3pjd ru -9yw- os+gvgdbreely for 8.0 seconds. Compared 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 accelerat*3qpflptle9wgy6 : ik/j2gj e/q; ro.es to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this tl.6 r3p qwgjk 2fj/qg;ep*l9e/: yoitime?

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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 horizonta t;oepp,c/qq in9) 4fal velocity. It lands 6.0 s later with a i9pq ;qnp),af/o ec4t velocity of 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 earthc)dwr1 l c-bz7*mhe52 cwr1lp is accelerating vertically upward )w dm clczc -12hep *r5br1l7wat $10\;m/s^2$. 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 downwardmosk*9fk6 k br x/34;zu73i(zgu izcj s at 27 m/s at one instant. If it continues to fall, one second later tc gx/ub3(zki u*6k jo kz7 m;3sri4zf9he 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 and accelerates(5k .+aia k3ngnb uzz; 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 strikes the ground wxa + tyq59sq9dith a speed of 30 m/s. Assume air resistance can be ignored. The heighy+5s 9txqa9 dqt 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 frekvdx 7;, 2a w pknt,6,e4krbwle fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object one second l4awpl 6v,bn2tkkxr,ke; d w7, ater?

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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 xz2;b f (u5mg 6zbjr-ea $2.5\;m/s^2$ 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 isf3wl4 --mxew)dy 9rdj found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a speed-lw rex d-d439jmy )fw 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 f6ao-b 3r sl*7 m*cuvxsalls freely for 4.00 s until reaching the ground. What was the height above the ground from which the ob-7u*mrsc3va 6 xlsb *oject 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 straight upward saz2lf-bi3 tn:hn/eb2/q y :hio 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 c/2lzn nb yha q/b2i:3:e fti-hhoices 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 st)t /b0zkckz 2+(1yvt6yz:qhg *tz hl araight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistan6zc/tz)b2zzy (a yltgvhk *h +1q0tk: ce. 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 plane has speed 0.40 m/sd d: bmb;a z5u;(3mn)hpm1pfy two seconds after i :muz1m;b3yap5dpbn ( ;)fhm dt 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 upward from thqa9os db eom*g irky2:q;.d3 2e top of a 100-m tower with a speed of 15 m/sd3qoidab29oy: ms2rg;.eq *k . Coin II is dropped (zero initial speed) from 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 in x.fpd0y tm3;fitial speed of another, how much higher will it bd0y ;pxt. 3fmfe 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 th/:i)vfk u -+g x)mpvnve ground from a delivery 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 p xkg) fi:vvm/ vun+-)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 u9zx,g3j*lhs ppwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement js93ghl*pzx, , 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 vertv +)p9xeqysdt- 3ilp pr+g92nically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank fepslriyx)v9qdn+- g9+ t pp23rom 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 launched straight upward with identhzqnb4rb ; z2(ical 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 brn;b 42zqz(hheight 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 ea2t9ub fm+ q9vach bounce, the ball reaches one-hamv qt 92ba9f+ulf 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 projectilvf2/q(5r ,9wqxwueny e in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizont/nyr,vfwxe 5 (2 qu9wqal?

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，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
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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 collision of the pe)a/j x*m n2h*ln pdk)dbble with the ground below is seen 1.dp)mk n2djn/)l*xha *50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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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 arguij(u i qw5fga6wt wi37/nmt2q7ng about the height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time tj7q (w5 72tf6/minwt uqai gw3he 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 straigh fc:(yrw) ys/dt line. Its initial position is x0 = -5 meters and it is moving aw:cy/fd( )rwysay 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 object is pulled downwards by gravity (down the plane)ki6t2p f qovvh42q j ,a-s h4 elk/2fqbd5wr1 of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank theq22s2jq1ae-vi 4kd khr46,)l5w ftop qb/hfv se 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 from the top of a talw6c)1uh5xy7: gdu roxl tower. Half a second later anoth uocrdwuxx)hg6y1 57:er rock, twice 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/s along a track. The cart comi l9;t1 othhv2x q58sces to rest after 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 thov ;c9 8h21 qls5itthxe 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 (tdzhcl7nc ,x2u*ary) 8 e++up/n s dscl c)y-a track. The cart comes to rest after 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 travc7+zsx*udral s-2dne l)/ccu)nhyt ,( p 8cy+el 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 withast12r. m:twi kr3t6x+w ux8q a constant acceleration of:3t qki2tuwx. rsxt8w 1 +6mra 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 fal(8 ++agatdul(pif jt9 ls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?t (+laf8ugitp+a 9d (j

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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 xw n zc;-04ajpmove and uniformly accelerate 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 z 4xa-w0p cn;jObject 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 horizontally with spph6o 1*lzf itcoxm 5x/bl +8;jeed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 6 ix*j h/x5;+poz lbolfct1m 8m/s. Which one of the following 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. Turk0 3rw8woh u;nwp*56ippn h0/qmx0 he object remains in free fall until it returns to its initial launch point. Which one of the following graphs coul 6*uh 50nr3nhxuormw8ppqk/;wpiw00 d 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 wi(2y mjsmhht4, r24mfall. Through how many meters does the object fall during the first 3.00 second2sh,wh ym4 rm 4tmji2(s 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 f4gq nw8r dy88r tt-5ujewf:z3y(dd+ m to rest across a flat surface in a time of 12.0 gy jz -fdqt 4wr8u85( rdw8yd+:eft3 ns. What was the initial speed 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 caro(aq,k (xojmx9 0)m0ak2xn c/bun f5 bt uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what0(o5n,aumkbkfnoxa0q2 jxcxm) (9b / 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 moves to the right at 60.0 cm/2kt3qqgcd6 w9 )ow:q7 ;g gmars. Five seconds later, the car is moving at 40.0 cm/s to the left. The total displacement of th9wgdag6q:k 3 m2 7r;c)go twqqe 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 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. Fiw eyp.qck1kj(d wgh: 3/lc: )mve seconds later, the car is moving at 40.0 cm/s to the lef.1wlyk):/q:d pc mj3ge(w k cht. 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 velpi 63g u.h+huete1r (rocity $v_0 = 5.00\;m/s$ 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 moqniu/ eao* eakz8ba -;h-y)1miau +1fving upward while in free fall. Which one of the following choices best represents the directye m bokaa)-+u18*h-iea1/fz; un aiqion 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 20.0 second trs0h3o;e-18 q8hifrnlzc 8a gsip 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.scq0e8 -r i;z faon1838 hsglh0 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:b,o o2y nikad3-d0 cue -;gny a line completes a 20.0 second trip with an average speed of 10.0 m/s in two stages. During sbd,o03cyg ea-:on; k ud2n-iy tage 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 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 omlq85dgc1. 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 the ball has fall 8ad1 cg5qmlo,en 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, 9k0pc44m (lsyse) efp a self-driving car races with a robot. The robot acceleratess 9e()k c0 y4em4pspfl 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 launched vertically upwar- r; w: v+0enq 8vid.erk;;7gfuaneqjd. The vertical position of the ball 0.70 s after release is the same as i-:q;r fv+keeiuj;gq7de 8avrn. wn0;ts 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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