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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 the r63d i9zj/y.pd ulps: trqk0z1 vn: kn+ight collides elastically with a second air track car with mass 2m and initial velocity zero. What is the veyz p d+:0q :knj3 9/dzrli.n6sp 1tkuvlocity 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 rlg)*d z6ogj8c-3agawek a rpo+1 e13s ight. Cart 2 is more massive than cart 1. As they o6jga+waop 8 1zald e*c3 -g1) egrk3sare forced apart by the release of a compressed 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 betwee-dyehmm(7 n q8n two objects with unequal masses,m and M, held together by a string as shd m(-n7qy8 mheown 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 g 9,hpatp(.4 o esm:lfdirectly toward each other with 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 bep : 9mfl( 4tgh.po,esa:

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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 dglwu ( 7u( 5,9tdiixpat 4.0 m/s jumps onto a stationary 10 kg skateboard. The speei5,((idu9lu7 wgp xtdd 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 and a 6000 kg truck have a perfectly inelastfxd0h 65z l, f/vus.wxic collision on a street. Which one of the following choices correctly identifies the object(s) that lose kinetic energy from the impactw.d,5hzfu60x v s x/fl?

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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 7m3 mayidwn07 r(ccw,h+w ) wuspring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gun is M. If the kinetic energy of the projectile a,w7uwy70ca3 hdmc wir(w )+m nfter 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 icq 7y* y)vhj5car moving at 4.0 km/h collides and couples with an 8000-kg freight car which is initia7qyijy vc5*)hlly 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 n3)+utj e)qj0 d8;s jtlcuf q;velocity v before it strikes another cart of mass 3m at rest. The two cars)c30tf jqunt;)8 leu;+djqjts couple 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 with a stationary object of mass xixy3* bhcr29 2m. If bohc3 2y bx9ix*rth 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 apple. If the 0 bi-vvua4d;yl /bui(g 1ns71a.1 kg arrow changes speed by 10 m/s during the collisiongu (i;b1y4 s u-1a/ilvvbad 7n (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 along a railroad track at 7.0 m/s and co8zz* wpyl c-t;llides with a tankerlpcyw 8z-z;*t car that is at rest. After 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 the East with speed 4V. A ka w3 2- nrouhdmru;,8truck initially travels to the West with speed 3V. After the vehicles collide, they move together ton k;8ur2dr,- u3aohm w 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 horc bvhmfwd5u.25(p rj 6r5zy2oizontal 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 sometime after the string is cut, the block of mass 2M reaches its maximum kinetic energy K. What maximum kinetic erchvjpo56ybm (2w r5ud2 5.z fnergy 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 objec;cys p:9nn9/t u*c byut 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 ut*/ 9yny9scpu;b: ncobject 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 yvck81kh8lm-0gw vqkv67 d t88lc r/c along a horizontal surface without friction. A block with mass M1= 3.00 kg initially moves to the left wicl g8 /qmd r86h8kv c0w7lv8v1tcykk-th 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 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 ly6f1/l2zi r vvua 2m07uje 3mtakes place along a horizontal surface without friction. A bl mzm6i l1j2u/073v fevay ur2lock 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 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/h l*zgp*k :xu 2qgf.g space and then collide.
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 dh- kxia1q p) )hjqx1;tn *pe/the linear momentum of two solid objects cdak1/qhjn1;pq)-i)pxet * x holliding on the x-axis. Which one of the following statements must be true based on the information provided?

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