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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 cf2p 9qmc +*wm2 falls frf*mc q9c 2wp+meely 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 rfui1v+ij/ f 7sest and uniformly accelerates to a final speed of 20.0 m/s in a ti fjifusv 1+7/ime 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 ve5k,*n i rh*:i0y*c/gyr fkmislocity. It lands 6.0 s later with a velocity of i0 c*i5msrr :y*hfk/ygk*in ,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 nears lxc23w*h4i 3dy8ydimm4/cm the surface of the earth is accelerating vertically upward symm c*xidy3 i8/4wdh3 c4l2mat $10\;m/s^2$. 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 2bsm5*+ju5jnd/b twg 0/ /zupq *zk4m e7 m/s at one instant. If it continues to fall, one second later the object would be mov 4b 5jm0z/*gns *mtz5 buj+d/kq/wpue ing 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 acc kn7zlg-g9g2*w+usetb*c k g ,elerates 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 theq(o oltwj-8v+ top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The h(tqljov w-o8 +eight 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 vayh86el+wl or1(ctb:bjn+ uxyi,6 l1 elocity 4.0 m/s in the upward direction. What b ,+lt1 (l1wnxjoc+6yr l8:yb uaieh6is 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 a bft0)xvd) q),af qh 2qy1do)2j u:qgm$2.5\;m/s^2$ 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 obje ,g0mtmm +v/usct is found to be moving downward at 18 m/s. If it continm vts/m+u m0g,ues to fall, 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 freely for 4.00 s until r 2-rx*uvyka8ip od-8 reaching the ground. What was the height above the ground from which the object was releara 8--uy*ivpx2r o kd8sed?

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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 03o g+y p q6n(v 3pvnmdy6v)yzlaunched straight upward so that it rises to a maximum height of 12.0 m above the lauvngpyq3v)+dn6o6pyv y0 ( 3z mnch 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 straigh)t+kok.* rwoh t upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistawotk )r +o*hk.nce. 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 speedvy) tdh 6f/cwd)e-ccdztf))( 0.40 m/s two seconds after it begins to s )ft/tfchd)c))v6cdw- eydz( lide. 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 vuuz;s;9hi:*kt a mi5 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 later. Assume sia5ut; zmu*9;v k: hig 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 i9d,5 fbn1mkuu p9o s-twice the initial speed of another, how 9o-nbfuskdm5 i9u,1pmuch 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 delivery truck traveling at 30 ;m7ntuo; u m zbt/55ms/lur.h u)ez(om/s. After hitting the road, it slides 45 meters to rest. How lonm;bon //(.u55 uutm;er s )l zh7oztmug 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 wb) 6f fxubcm9ah,4i -t ra+q:with a velocity of 30 m/s near the surface of the earth. After two seconds what woulf rqaca-x,mb)u9 +:i64tbw hfd 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) az zs-;k8.hsyq re 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 qz.ys 8zhk;-sheight 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 launc.p6-u wtgmk4 nhed straight upward with identical linear momentum. Object 1 has mass M and reaches a maxiwu4- ktgm6 .pnmum height H above 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. Aft3qd6ea- pun r8ggg/9uer each bounce, the ball reaches one-p6/q-39rgguegn 8ud ahalf 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 projectile nin cs +i8o59yylg7q4us+f:uin free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s igo ysif +95l+:8quy4icu nns 7nitial 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 vert45j 7v 0ia eps837sdc4y izdlxical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is droppe sdlj p7es4z5 vc0 d3487axiyid. 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 q4l t/w0kc )e .ehaup6height 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 lcku).e h0pq/aw t e64time 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 positit uj-+4y y(e6mdww/cwon is x0 = -5 meters any6wyu4cdtj-w w(e+m /d 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 5vhc8vr chl yy.e:q*6 object 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 direction that there is no loss of energy rhv6 58:.hel vy*cyqcand 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(edy ywy9f14l from the top of a tall tower. Half a second later another rock, yy w1d4(l9e fytwice 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 tr+wmw-eic,yob).:bk9 hj p: 7iw5v aatack. The cart comes to rest after traveling 1 m. The experim ti,hbw.:iopwc: 9me a5ajykb-+) vw7ent 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 traccpl 0dfrix p;axx :6 *lyj4/0jk. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving atyj d 6ppxxcx00jf:;l/ri*4a l 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 r k1g*yfwq8/f vest and runs in a straight line with a constant acceleratiok / g8ffwyvq*1n 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 abpu t,.r 3z+2 sccjqa8nove the ground. If the ball falls the first distance 0.5h in a time t, how much time is q+, nj a2tp83uccrs. zrequired 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 move4xxq s9*og +)nvwc k)p and uniformly accelerate to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed tw c ) xsoq*wgvxpkn)+49ice 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 horizontally with speed 10.0 m/s from a height H 6(u2x 0flqhsv 8 uj2jwabove the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following choice2v2xsw j6 hf8u0ulq (js 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 tb9r0js; s)vhx hrown straight upward. The object remains in free fall until it returns to its initial launch point. Which one of the follbj)9rv0sh x ;sowing 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 meterpr ) 5yw uqfducr-8t25s does the object fall during the first 3.00 serft8c)5r qdpy52 u-wuconds 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 m1vrqy jp7.oc em16f5se*k sqy) j2fz 3 to rest across a flat surface in a time of 12.0 s. What was the initial speed of the box when it sta)7m.j v seyy11oq pqz5skcj r*326effrted 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 accelerates top lp(j3 mys9zxl0khy( :n.)th a speed of 7.60 m/s in a time of 3.00 s. Through what dhh(mn.y(sj)3y :x tp9 zp0llk istance 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/s. Five sxf, knrhszd 5 +*g98pzeconds later, the car is moving at 40.0 cm/s to the left. The tot 9zhf+ 5zp*,xknrs dg8al 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 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 rightpkt4n 0 3texbd: 4q352.q-edil,y 2nerik d ey 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 best3d 4ty deni:e 2 k5y.etd0leqqix3b 2p4-nrk, 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 - vmaz:-v;qshty- .mgstarting 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 upward while in)c1w1homn;wmp 6 3oud free fall. Which one of the following choices d;nom1up3w )h6o1mwc 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 r;j0pgq msh+n4ight completes 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 seconds 4+qsgm0h pnj;. 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 completn.o-r s9iw 7gw6tef0pes 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 it. w7w-r0 pgfo6 sn9ethe 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 ball zi6 ufpxgkg68*tp d0 7is 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 fallen 28.0 m further than the initially dropped rock, what is the spee6zgkx g7dput*6f 8ip0d 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 wit/ 2d zl9o(trxgh a robot. The robot accelerd(zt ol 2g9x/rates 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 upward. The/hn-c sn n2+ud 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 timcn n-h/+2n udse 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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