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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 right collides ovkx ;:covz +i x:(7gj.w.e ih g8/coqelastically with a second air track car with mass 2m andigq7xowoh i (c /:v+j gz:o.v8k;ce.x 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 djznw n, ,y85ct/f out2:o 2v fr-znj;iiagram 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 will have the same magnituden c2onj fiz ,twfjn:-r2zto ,y;5vu8/ 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 ar c1ql6pl.vuq5c4 b0.z 1cxcwnd M, held together u lbr0wzlpq1q.5cv cc.4x16 cby a string as shown 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 directly towa5v(l ,g7;v 9nq(hj2q r2lanoxs (uegx24ytngrd 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 tg 9 onxluv l2nqegsg a2(24xy(;h7(5 v, njtqrhe 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 onv0 iny 5e(qwy6gdu v:+5hfp+ /l k,ewjto a stationary 10 kg skateboard. The speed of the child and the skateboard is approximat fu/qdknp+w ylhe605 e:gy+ ,vwvji(5ely:

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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 ibzmoyv*9 9wu0dx 5o h/nelastic collision on a streetyh* 5uvo0b9odw/ 9zxm. Which one 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 is fired horizonta0. vts y37yi+ogldlb*7vg htob n14o(lly from a spring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gunl3v+o to*od1 40thyiy7b(g g.lns b7v 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 moving cjjf)mn2aa (4 at 4.0 km/h collides and couples with an 8000-kg freight car which is initially at rest. The approximate common final ) n 4f(jmja2caspeed 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 mass0n u ,x/1hzphq 2m has a velocity v before it strikes another cart of mass 3m at rest. The two carts couple and move off togepu /0 ,qz1hxhnther 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 objfp06e vr(60l ffsl cb7ect of mass 2m. If both objects stick together in aperfectly inelastic collision, what is the final speed of the conglomerateb00prlfs( v7 ec66flf 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 shx*/ylm7ssr4wi)aj ; uot through 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 apple goes from rest to a spe;*xu)m4yws is /lr7a jed 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 a jl95 h6eykn-:o/.mzjx l6re fnd collides with a tanker car that is atomf /j h:-r69e lxjnky6z5el. 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 spei,h0cn 0 uvq i wxtg+ lxmfg9nz0f/,0-ed 4V. A truck initially travels to the West with speed 3V. After the vehicles collide, they move together to the West with common speedfx ,m/t zl+gq0h fv00gnwiu9c ,-i0xn 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 horizb pnjjm1 skmt / 1,bpc-oi-4 k3o1nlw9ontal 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, tknntj9 w-mps1/13 -cp,kblj1mb oi4ohe 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. 86jpndn5i)g p A 5.00 kg object moves to the left with speed 3.00 m/s. After colliding, the 4.00 kg object moves to n)pj8p dgi6n 5the 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 te6m1r6d ( ako6rxuwa:r jv k(4wo blocks takes 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 wv:ro kme xrd(k1a66r(waju 46ith 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 surfa4fe o+hf7t w-1lf, k 4*jsfgyr5g.xlmce without friction. A block with mass M1= 3.00 kg initially moves to the left wimrlek ys5 ,f*1+44g7 f- gfjfowxlh. tth 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, moveqhca. m6asfw)k q8 :4f in 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 showsgk6xxmu3 y14 jtq1 1an the magnitude of the linear momentum of two solid objects x1t1ug1kxq 6n3a4yjmcolliding on the x-axis. Which one of the following statements must be true based on the information provided?

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