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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 / ri.qtszo95 .y hy)qz)cms 6.h(gggo2 falls freely for 8.0hg )zgom s)s .rqzy9i t .6go(hcq5.y/ 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 accelerates to qirtok9j7 c6n12n )2km ky(fna final speed of 20.0yn q1(2i7ocn6nk2fr kk)t m9j m/s in a time of 15.0 s. How far does the car travel 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 horizontal ve kg95e3*p,(h0 hfkwye hox;t llocity. It lands 6.0 s later with a velocitxhtwh; ep5ye h9f g,ol3k(0*ky 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 earth is accelerating c vnr5 9/cn9u;jft-avvertically upward at vv /-c9c nj9 atnu;rf5$10\;m/s^2$. 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 i2+ancq2k/nvlh a89b bs found to be moving downwards at 27 m/s at one instant. If +9 kqbbch/a2vl2 na n8it continues to fall, one 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 resov6;+wfr9r 88nnpl c ot 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 buj5ev0m,y0*hw( q agys ilding strikes the ground with a speed of 30 m/s. Assume air resistance can* 5j,yvwe s(hq ga0y0m 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 in the upw90yvwg dzg19bard direction. What is the approximate velocity zw1gbd99 yv0gof 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 a 0s1q2ug2wbv vb6+ln 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 th 9mrn7x( sh 87hjelc-o be moving downward at 18 m/s. If it continues to fallm(h97sj 87er hxn hc-l, two seconds later the 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 from rest and falls fhm ni8- cwjnrv-40ke9reely for 4.00 s until reaching the ground. What was the height above the ground from which the object was r nm wce-ihv4n 0k9r8-jeleased?

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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 mk 7-yi*9lkiris 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 rkik -l7i m*9ybest 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 /ysmn+fgd +rpthhyl24 vd m ne(m-./ -rises to a maximum height of 12.0 m ad.nhgtrm-hmd /+ (yl/-psn ev +4 mfy2bove the launch point. Ignore air resistance. 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/s nj u:q+9mh 2wv yu2in lty()-ktwo seconds aukhjn mn)vi2+ q(uy-:ytl9w2 fter 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 upward from the top of a 100-m tower wit8/g h uwdz1qk0h a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0w0 kqz 8u/g1dh 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 twiva)iy;/4wbkx13c+8m xj:0wlwj jmf tce the initial speed of another, how mu1bimf80:x+ 4/tj ;vw)xajmyklw3 w jcch 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 delivurvdgg -a h653ery truck traveling at 30 m/s. After h6 ur5 -vgah3gditting the road, 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 velocity of 30 m/s near the surfgs l8hkcdh 66616f ukmace of the earth. After two seconds what would be the direction of the displacement, velocity andh k6us16ldkfg6c8 6mh 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 vertyygyh, c1 szwv/+ g(t*ically 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. vyygg*z/ sy +h1(wtc,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 i :h ;jxkd97 ezg(wu 1ir9tsdh7dentical 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 abovek( :7s1 xrdwuj7gdit; zh eh99 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 boubqu)pp (xf12bnces on the ground as shown. After each bounce, the ball reaches one-half thqpx uf12bb)p( e 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 projectile in free fall achieved its minimum c 1yjb+wa v34y+j bhc(speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s invyc++b1 wc3a bj4 y(jhitial 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 ol0 8mdaycv 5*cosk8w)k 6 8c: ui:lk1q;acjtvertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what 8ockldw;cukyo)vac:8ks6 tl m5q0c1*aj:8i 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 ab(c52 v.iyv m78 * jmphtt.xf-qe)crjw out 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 the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how7 )jtcji.vp5m ft-2(.c8r *mvyhq xew 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 ini/wg9r-*zygq g8g d 1o7mgg -wptial 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 acceleration, resp -7ggq1ydm-g9* gzp w8/ggrow ectively, 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 gravi)ex08-rvjv, pul,kglqd5u *rty (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 t vdrx0-r)p ejvq 8gl, u*,ulk5he 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 tall tower. Half a secoc-c6mtms)z 3dnd later another rock, twice as massive as the first6 cs)d3tzmcm-, 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 car8ppt pc s;4qq0t comes to rest after tqspq c0p8 p4;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 tracksd 3j.i+sczj bv o: 9+onj( xk,e;(emz. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially :vz(dsio.( z+nej cbxjes;3m+ jo9,k 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 p19:zk/q-qh:t lt cz krest and runs in a straight line with a constant acceleration ofkh:p- z :q/tckz9 ql1t 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 resiswl2;0 8d/9*y2uycqqjd (fk h q4wd*o cv rer8htance from a height h above the ground. If the ball falls the first distance2d8ry c hqvw8ldyuhqkdec/f(*r092jqo; 4 w * 0.5h 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 83 1p6z nfhtuw2 cbnq0uniformly 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 Object 2. After some time T, the velocity of twnz2c8 qub03 n1p fth6he 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 speed 10.0 m/s from a height H dr*lndovf8 5ou2ob5/ ;i 0on:ye +tnsabove the ground. The object reaches the ground with a speed of 20.0 m/s. Whichtods8o 5i n n2o:u/e*onl50vfrb+y;d 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. The object remains in free fall untvkm n xv8dk* v4yq0wv,vu3-y1zy f; ;gil it returns to its initial launch point. Which one of the following graphs could represent the velocity of th,;uv m4 vy zyv1dgvyf*x-0v q3nkk w;8e 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. Throu2oilouy u :a.8gh how many meters does the object fall during the fir o. a82luuio:yst 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 rest uqxfwu9 s j*:zdd/d4bn 2/k)zacross a flat surface in a time of 12.0 s. What was the initial speed of the box when it stf/ wu2*zd4d9 zdj:b/ksxu q)narted 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 hnm/ ccq(n,rw(,,ao qmh*pw1rest, a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what dis,w rphh(n/ mqoq,,can c1m(w*tance 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 atzzef5z0 bjkij:qu g2*w v: 5z0 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 q0zkizf2 wvge: j0u55zbz*:j 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 seconds l+;ce(mrus5tk ater, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this tim m rk;5tcues(+e 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 velocityfzmil78j-z hnr . 61yu $v_0 = 5.00\;m/s$ 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. Which o d ,zw+c,7z )7leue rgefjw(,mne of the fo(ezz w7),e m lfug wce,d7,jr+llowing 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 comrw1zl cz:d 08 ,jmbq)hpletes 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 s,r0z mdh8jbclwq1 : z)econds. 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 second trip with a ihoyuqmd2 +1y 0sd0t,n average spe1d 002uyyqo t,dhms i+ed 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 during the 8.0 seconds of stage 2?

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  13.33: At the top of a hjewoq v:v8m(5hk r ,1tigh cliff, a small rock is dropped from rest. A ball is launched straight downward with an ,jo: tq e (rmv5v1hkw8initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When 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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  16.36: On a straight road, a self 3mbw9qp2a5oapy2 e:u-driving car races with a robot. The robot accelerates apmq5aowy ap3ub 9e22:t $8.50\;m/s^2$ 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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  17.44: A ball is launch9me npxhms8w00 -dm b4hew u)xz7;ff*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 during its fligpedfwm)sfhu7 hx009nm w4;*e x-8zm bht?

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