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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: 匿名未登录  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 and velocity v to f jr0wz k9 47cmshb2bpb.( sc/4 d*herthe right collides elastically with a second air track car with mass 2k* rdre4bz9sp c0 .s(4fbch/ w7 hbm2jm 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 thq4 /z0,uno,wh tuzw 2fe right. Cart 2 is more massive than cart 1. As they are forced apart by the release of a compressed spring, which of the following quantities will have zouw,t 4q2zf/n w0h,u 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 compressedyq2n t-l*op, i between two objects with unequal masses,m and M, held together by a string as shown in the figure to the right. The obj,ipy2lo- tn*q ects 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 towardbxa+x1qrtr6hz2yw 51 b90slj56 wbj+ kqn lw. each other wi6 q w xw+r 9a5zl1 .ryx2jht5bj0s1k6lw+bnq bth speeds 6.0 m/s and 8.0 m/s respectively. If they grab each other as they collide, 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 10x09wurh*gtv+r 80o:i uri k .o kg skateboard. The speed of the child and the skateboard is apprto+w *u0ur v i.ir90k8:ox hrgoximately:

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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 and a 6000 kg truck have aj0ym zd7y-f8 z perfectly inelastic collision on a street. Which mdj-y fz0y8 7zone of the following 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 -g4k xzmr3uid krty 0zk. 0,k6is fired horizontally from a spring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gutd6 z kykk0x. uk3i0-m ,r4zgrn 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 movinga4*.okyfgi2(: q xenz at 4.0 km/h collides and couples with an 8000-kg freight car which is initially at rest. The approximate common final sqn 2(ax.yz*g :ok4ifepeed 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* ;:v3jbsjwqmf( lj 7pfp4s-t cart of mass 3m at rest. The two carts couple and move of:(7b ;*s -mv4spjjfl pft3 qjwf 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. ,v.:oad +d fdoIt then collides with a stationary object of mass 2m. Iffo +d:a,.ddv o both objects stick together in aperfectly inelastic collision, what is the final 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 appl.91t gld lae7je. If the 0.1 kg arrow changes speed by 10 m/s during the colli9ga . jd17ltelsion (from 30 m/s to 20 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 alon3kwdiqm(1sly10k ia ; g a railroad track at 7.0 m/s and collides with a tanker car that is at rest. Akidk l31(w0;qiy1a smfter the collision, the two cars stick 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 travels to k * -it )qfslgy2p/od/the East with speed 4V. A truck initially travels to the West with speed 3V. After the vehicles collide, they move together to the West with common speed 2V. What is to/pqyd i 2fts)-* /kglhe 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 horizontal fv t1x4iagn1cq82 zg;p rictionless surface connected to an ideal spring. Initially everything is at rest and there is a string compressing the mass-spring system from equilibrium. At sometime after the string is cut, the blockgz;p v gtnq1 1cx2ai84 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 obj gni5z+rr9f/ a,c y7umect moves to the right with speed 5.00 m/s. A 5.00 kg object moves to the left with speed 3.00 m/s. After colliding, the 4.00 kg objec 9yi5cfgr7/uz+, a nmrt moves to the left with 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 , x o qg,bf-n/2l6yijza horizontal surface without 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 mqo/ 6ix- ,2gbyzlf,njass 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 av 9)so/fs x:jalong a horizontal surface without 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 moving to the right with speed V2= 2.00 m/s. After colliding, the block witho:/ax f s9)vsj 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 co;8b 8wlul,f0lmbu6w l llide.
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 momentum of tw8q2aygn6 lq0yo solid objects colliding on the x-axis. Which one of the fol gqya6nyq802llowing statements must be true based on the information provided?

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