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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 velocityx*03zv f ;eez 8eob.zo v to the right collides elastically with a second ai zozv0x;8 eefz*.e 3bor track 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 rig s- jeeej)*hpk p(9h2hht. Cart 2 is more massive than cart 1. As they areh 9pksh*eej j)-h (2pe 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 between two objects with 1sc s+l hku6,rpgr0 4gunequal masses,m and M, held together by a string as shown in the figure to the right. The objects are initially at reston a horizontal frictio4p ucrksg s1l 6rh,0+gnless 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 qty .morn+,gyb vuo) 4 1k5/le100 kg run directly 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 com. 1 nye) +lbq45gkuy ot/vro,llision 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 10ey r;(bem gyx4j3l- j2 kg skateboard. The speed of 3xejyjg;rbe-2y( l 4 mthe 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 havj m9e4gp :-jzx* r5osee a perfectly inelastic collision on a street. Which one of the following choices correctly identifies the object(s) thmgs: epz5* ero9j4xj -at 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 sprizyf mr 7.hm7f,ng 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 afh. mf 7zmyf,7rter 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 collides and couples with an jt rp9dt)i4 px-vti 8;8000-kg freight car whi9tt p-r;it v 4jdxi)p8ch is initially 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 vo-qvjd)gp 8so7 z:g t4x ko0lms4y2d6elocity v before it strikes another cart of mass 3m at rest. The two carts couple and msy02:s4gm 8qgdv olokz6tjo) 7x-4dpove 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 5x5q rrhmd5ox1i6+n80 ewdu4cyzc cdg3n3 d 8 mass 2m. If both objects stick together in aperfectly inelastic collision, what is the fina63 5u qc5dm xddhzoccxwyd38 e+01r inn8r 4g5l 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 zs ja,0ch0(xf hwcy1fxd-f;9 changes speed by 10 m/s during the collision (from 30 m/s to 20 m/s) and the apple goes from rest to a sx1c -d0 wj,fsxzhcy9h(a;f f0peed 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 avsf cq6cmj(-*; y me7lnd collides with a tanker car that is at rest. After the collision, the two cars stick together anflc(e*ysc67mq vm; j-d 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 trf 17-q f6y/ejhnslt6huck initialsfh lnef h 6/7q61ty-jly travels to the 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 horizontaln 3 )m jef.7ofsl6o. yhdxv2,t 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 energy does the block of mass M attaimv)o6fld .yhxsej,3f7t o 2 .nn 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)yg7hdlx fo)-dul6p : y*o8 fz0hvqo7 with speed 5.00 m/s. A 5.00 kg object moves to the left with speed 3.00 m/s. x)) oo-lh* 7y8hu 6 flvdpf oz0:q7gdyAfter colliding, the 4.00 kg object 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 a horizontal surface wb dvutd(e :g2+ithout 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 b ubtdv+(dg:e2lock 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 al fusojy89 wvk83a pp 30h/sg 1tsg4.cvnr(t1oong 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 initi8 /n1ytop4kos.ru (s v3j 38f0pgw9ghv 1tascally 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. 1gxrb3 he+.v)l6(.y/*kaerxa dl* vswx ffd/
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 two solid obje6re xs 6r0s6v:wirhb yx)1f+o(f2y hr cts colliding on the x-axis. Which one of the following statements must be true based on the informatfwxxhso)e(yyi6sfr 6r0b+r1 6h2v : rion provided?

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