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习题练习:Collision and momentum conservation

 作者: admin 发布日期: 2024-08-07 16:33   总分: 19分  得分: _____________

答题人: 游客未登录  开始时间: 24年08月07日 15:56  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  
  94.33: An air track car with mass m and69ed/ uqi*ya3p q i,bk velocity v to the right collides elastically with a second air iq3/kaqu y6id be*p, 9track car with mass 2m and initial velocity zero. What is the velocity of the 2m car after the collision?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.08: Cart 1 and cart 2 are held together as shown in the diagram to the / ,s 7q ,3vf6a*yn;imfz- eorh*uixfsright. Cart 2 is more massive than cart 1. As they are forced apart by the release of a compressee/ h *of;yia-sqr3,mznus xfvf ,* 7i6d spring, which of the following quantities will have the same magnitude for both carts?



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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.37: A spring is compressed between two objects with unequ3 x6xjjbycm 4 9 j6e-svfn;09paoill1al masses,m and M, held together by a string c4s3b 09ljx1noexjm ;-pvily6aj69f as shown in the figure to the right. The objects are initially at reston a horizontal frictionless surface. The string is then cut. Which statement is true?



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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.12: Two football players with mass 75 kg and 100 kg run directly toward e8b+3ocy qy maes:6n,wach other with speeds 6.0 m/s and 8.0 m/s respectively. If they grab each other as they collid sw8 acnyo3m6eyq: +b,e, the combined speed of the two players just after the collision would be:

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.14: A 30-kg child who is running at 4.0 m/s jumps onto a stationary 10 kg62 ,+ a h4zvmu3x**yux6xqz 7gdfhr6f0wgekg skateboard. Thq3f7fz06axxru v ,hu6kmy2 6dg*w + egz4g*hxe speed of the child and the skateboard is approximately:

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.23: A 1500 kg car xf,hu8 9wg ; sc-xnwv,and a 6000 kg truck have a perfectly inelastic collision on a street. Which one of the fosf w8,,u nh9x;v-cgx wllowing choices correctly identifies the object(s) that lose kinetic energy from the impact?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.35: A projectile of mass m is fired horizontally from a spring gun g :hgbn xsy;73q; i/rkthat rests on a horizontal frictionless surface. S3kqh:x/7g;rnb i gys;ee the accompanying figure. The mass of the gun is M. If the kinetic energy of the projectile after firing is $E_k$ , the gun will recoil with a kinetic energy equal to:



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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.14: A 5000-kg freight car moving at 4.0 km/h colx;f3bu8npfrrpxx,; tj.w 3t 2lides and couples with an 8000-kg freight car which is initiallr;prxt, xpfjntxb 3u 32.;fw 8y at rest. The approximate common final speed of these two cars is

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.05: A cart with mass 2m has a velocity v before it strikes another cart of x. l14g9qm 7jzj2sq6j(lkctayco/j . mass 3m at rest. The two carts jjs/c 4m9xo cqjgl 2qzkyl16.t a(7.jcouple and move off together with a velocity

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.12: A mass m has speed v. It then collides f l me-,9r 8jgvehu1 8:aat.zlfdre(/ with a stationary object of mass 2m. If both objects stick together in aperfectly inelastic collision, what is the f:tz.ed1ulmj9h( ava8ge rfl8 /ref ,-inal speed of the conglomerate object?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.06: An arrow is shot through an apple. If the 0.1 kg arrow changes speed by 14n(.kbd- xya55rlykg1jgl j +0 m/s during the collision (from 30 m/s to 20 k5yxj5l4n1+rl d(gyag-jb k .m/s) and the apple goes from rest to a speed of2 m/s during the collision, then the mass of the apple must be

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.04: A freight car is moving freely alas1v 1tvaeqiyl4d/wm/w .tu4n i .n8-ong a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stic .-v 4ame8.dn/t/n ytqusilvw11a4 iwk together and continue to move down the track.
What is the magnitude of the final velocity of the cars if the freight car has a mass of 1,200 kg and the tanker car has a mass of 1,600 kg?



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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.10: A car with mass M initially tr+lptd vxy)p-agtt8c8 )*t*pchh /vw6avels to the East with speed 4V. A truck initially travels to t/8cp lh8y+twv6vtp d*x-a)tt phgc)*he West with speed 3V. After the vehicles collide, they move together to the West with common speed 2V. What is the mass of the truck?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.37: Two blocks sit on a hpnng 2s-f:0iwhh+pu ) orizontal frictionless surface connected to an ideal spring. Initially everything is at rest and there is a string compressing the mass-spring system from equilibrium. At sometiupph:n2+i)s-0 gfn w hme after the string is cut, the block of mass 2M reaches its maximum kinetic energy K. What maximum kinetic energy does the block of mass M attain in terms of K?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.09: A 4.00 kg object moves to the right with speed 5.00 m/s. A 5.00 kg objlmix6hxpzw*ein x(;a:)1.o b ect moves to the left with speed 3.00 m/s. After colliding, the 4.00 kg object moves to the left wit1x*ea whz6 ii;o blmpx()nx:.h speed 1.00 m/s. What is the speed of the 5.00 kg object after the collision?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.23: A collision of two blocks takes place along a horizontal surface wa yix5s:5(o *jgynl j6-c: mzeithout friction. A block with mass M1= 3.00 kg initially moves to the left with speed V1= 5.00 m/s when it hits a b6yo jz m:x5lc5-gsj i(nya* e:lock with mass M2 = 5.00 kg initially moving to the right with speed V2= 2.00 m/s. After colliding, the block with mass M1 is moving to the right with speed 1.00 m/s
Which of the blocks underwent a larger magnitude of acceleration during the collision?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.24: A collision of two blocks takes place along a horizontal surface witffzvea c4x9i;aw .f33hout friction. A block with mass M1= 3.00 kg initially moves to the left with speed V1= 5.00 m/s when it hits a block with mass M2 = 5.00 kg initially fwv x.c3az9;afe4f3i moving to the right with speed V2= 2.00 m/s. After colliding, the block with mass M1 is moving to the right with speed 1.00 m/s
What is the speed of the block with mass M2 after the collision?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.15: Two objects,Aand B, move in space and then collide. pl;7wcjjyx t uo5* k;r3t)5ng 7v( v ofv1oi7u
Before collision: Object A, of mass 5.0 g, moves to the right with a speed of 25.0m/s.
Object B, of mass 10.0 g, moves to the left with a speed of 20.0m/s.
After collision: Object A moves to the left with a speed of 25.0m/s.
What is the velocity of object B after the collision?



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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.34: The graph shows the magnitude of the linear momentq,ytdwy 8.i 0ypgxs(o w,q1a .um of two solid objects colliding on the x-axis. Which one of the following statements must ixqt0,,.a1.ogqp yy8(y dswwbe true based on the information provided?

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