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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 anymz(1g0v8zj c mjc 9loq91 gh/d velocity v to the right collides elasticall9ch zm1gvjzlj9 c /( qyo0g8m1y with a second air 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 shzju9a0vf ,eldkm())-v t0tidown in the diagram to the right. Cart 2 is more mjlkt t9(vdzv, ud) 00i-fae)massive than cart 1. As they are 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 unequal masses,m and M, d2 sf. e7dsf,vheld together by a string as shown in the figure to the right. The objecs2,d.fes 7dvf ts 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 directln6v htae- t.)ukh / aciyd/u(6y 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 pla nk (t-6a y)duei t/chau.6hv/yers 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 swupb /-7 d-5mpem u0 r1abt yz)iqz6*onto a stationary 10 kg skateboard. The speed of the child q/umms-atz6 i p-501pw7 ed *uby)zbrand 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 b rh* /u7mkk7qd70lms kg truck have a perfectly inelastic collision on a street. Which one of the following choices correctly identifi h77lb0q/kk*m md7sur es 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 tha:x o6d0yao ,o(xazcu+t rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gun is M. If the kinetic energy of the projectile aao6d:x+o yo(zxca,0 u fter 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 movinguok0:f e amf;n 3,o-ov 0ufk3s at 4.0 km/h collides and couples with an 8000-kg freigk n ksae,0 33:fu-0vofoum;of ht car which 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) dc z7:ugeduyr 12i;e c q8a6,mwt8vm velocity v before it strikes another cart of mass 3m at rest. T8y e2 i q;mve d6muacu8)ctgw1d:7,zrhe two carts 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 9qzg/ztc,2jly1e )l n-ipt o5 mass 2m. If both objects stc5 ytpz/qt)lgj9l ,z 1oe2ni- ick 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 a; c*bgzjwb 30yxo 222dtcag0through an apple. If the 0.1 kg arrow changes speed by 10 m/s during the collision (from 30 m/s to 20 m/s) and the ap3c ;b azo2gy 20xg0tb*a2jwcdple 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 pn/uuh 6m*s,oqs6pi 0 moving freely 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 and con 0pu/6,*6sshoiqm p nutinue 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 r.u-9:xd5brhzy0 vwtinitially travels to 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 c-:bt . drrvzu9y 05xhwommon 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 dz;c;t )ve8 ,0lehewo p/+gf d3cz h.wideal spring. Initially everything is at rest and there is a string compressing the mass-spring syc0v w tcd3f8wegoh+. ple;h,;zd) / zestem 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. A 5.pmmld hva ,dq go;0 gp56+6,fv00 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 is the speed o6 g ,d5 am;v h,v+pg0dmpf6qlof 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 t5,da80uz:q 7urk+ ijdp ak 7:p ki4nnmakes 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 = 5.00kd7 :kui:mpi04 +5da7rp,z kn8uan jq 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 s7*/exhvx;ach urface without friction. A block with mass M1= 3.00 kg initially moves to the left wv/ h*c hx;e7axith 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 space and 0x1 + zuz-iy9ncvhc(f 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 l z ni3xq4-z0mqinear momentum of two solid objects colliding on the x-axis. Which one of the followi z3zn4-qmi x0qng statements must be true based on the information provided?

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