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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 and velocity v to the j rq-lm(p yag2wd;mh9 w5a ;ywzo/m)( right collides elastically with a second air track car with mass 2m and initial velocity z z ;mp jma/h;(w dr (wg-yyw2oa95)qmlero. 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 togethesjuw2czzp)p5iecl ): 2+g fr.r as shown in the diagram to the 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 willf.ecpl 2pu s:ijwgr zc2+))5z 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 wi/a9oef( w)x2iipk0gj fd e2f-th unequal masses,m and M, held together by a string as shown in the figure to the right. The objects are initially at reston a hor(02- /f 9ikxei 2j )opeafdfgwizontal 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 b- /rauy*;:c 1lomz/xy2uqvq 2*pm n z100 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 thep2;q-o *u myq/v/rz2bl1mn a:*zcxu y 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.v15kxyd kg63n :li)m o0 m/s jumps onto a stationary 10 kg skateboard. The speed of the chil1xy35kgl m :v)6ik dnod 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 t3( u,ycqpd) fjruck have a perfectly inelastic collision on a street. Which one of the followuqp,d3(c fjy) ing 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 s gg xf)d+,rsmps;aha5+l ws)/pring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gun ia ;fs)g+) sl+h pdr5/ax gms,ws 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 collidep ,ghm aksmrn66/rv1)s and couples with an 8000-kg freight car which is initially at rest. The approxi)mhprk61 rg ,as 6mv/nmate 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 strikewyj( ej cnh1xr5m c*h(9n7l z6s another cart of mass 3m at rest. The two carts couple and move off together with a velocijw *ncj(c76 zhxyn (1lmr5he9ty

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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 collidd qrdruj2q29 3 t-vbu.vb s0mwt la0,7es with a stationary object of mass 2m.v.0u dbaqdstltwv7 , 0qu9bjr 2r32 m- If 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 apple. If the 0.1c-g15xbxs .c c kg arrow 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 speed of2 m/s during the collision, then the mgbcs x -.c15xcass 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 +yo; m t-yqp5lfreely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together andpyl m-5 o;+tyq 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,tz7kk7s) o 4x frl7dhavels to the East with speed 4V. A truck initially travels to the West with speed 3V. After the vehicles collide, they move togtzkh,7rl 7k)xdfo4 s7ether 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 horizontal frictionless surface connected to an v9a6 ;-kooz2 jy8g q;iet ;+dlym sqv;ideal spring. Initially everything is at rest ayj;;8geky69z; +vooldia ;stq-v2qm nd 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 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. fs3m 3a0 b: had4 9px ld7seg.xwb8;zb A 5.00 kg object moves to the left with speed 3.00 m/s. After colliding, the 4.00 kg object moves to the left with speed 1.00 m/s. What ib3a3:sad 9bb;gp7z 4 smhed xlf8 w.x0s 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 g n5*8re4zjbz,tb2*qs bj6bt surface without friction. A block with mass M1= 3.00 kg initially moves to the left with speed jz2j t6nqbesr*b4 g *zb5b,t8V1= 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 take:tindx-+ a c7m/j 0k;y oztz7ss place along 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. ;/t+az x70-7jyomnicztk ds : 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 spaj+yu8 1 sct,flce 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 the linear momentum of tw8yvuv jl 45e8exxvy ,3o solid objects colliding on the x-axis. Which one of the v y53el4x e,v8jvxy8ufollowing statements must be true based on the information provided?

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