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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 v-d w0x.vdby)5t m0 tw qpbu)bc+so-0q/ ep ox9elocity v to the right collides elastically with a second air track car with mass 2m and initial velocity zero. What is the veloc)do0eb/tub 0 .)m-oq0-xpb+ w5dqyp cv9 t sxwity 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 to -;lim 64exrwhe right. Cart 2 is more massive than cart 1. As they are forced apart by the release of a compressed spring, which;wolex r-4m6 i 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,kg d32)6f xhxoyde m3mp han5-,2au5t m and M, held togethert5ky 3hp26 - )fo uehmdg2 nxd5a3max, by 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 playe-6qq v59 zyt;lqb b6azrs with mass 75 kg and 100 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 y qbltvqa96 -;z65qbzcollide, the combined speed of the two players 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 whf6w:zc z 0uvfo4 ic+9fy2tqj 1o is running at 4.0 m/s jumps onto a stationary 10 kg skate49+z: 2zw6 1f q tcicuojv0ffyboard. The speed 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 cey7hz22jvz7 ra 0q7 jand a 6000 kg truck have a perfectly inelastic collision on a street. Which one of the following choices correctly identifies the object(s) that loy2a07vj j77zezcr qh2se 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 hov,l1 rpm b8u9urizontally from a spring 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 after firin ,umupv819 brlg 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 cey 1;1spkdw 8z-:hpr houples with an 8000-kg freight car which is initially at rest. The approximate common;rd -kz:8 hphwes1py 1 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 beeq7( hf tojx(a7hydyxx12p1o jjq+ +r6uf: 6ffore it strikes another cart of mass 3m at rest. The two carts couple and move off together with a velociedhyqax11++7 rxof(o u2x jp:6tf7 jh6qj( fyty

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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 tdao o72 v. a8 cxehl,u.i.him;hen collides with a stationary object of mass 2m. If baov,;oie2hc m8.x.lhd .u7i aoth 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 /-qym)fa7yyethrough an apple. If the 0.1 kg arrow changes speed by 10 m/s during th yye-q /7yfma)e 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 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 alongddd6j3 sy3 qn0 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 continue 3ydnj0dq 36s dto 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.:bwm j9 0vxqk. A truck initially travels to the West with speed 3V. After the vehicles collide, they move together 9m:.xbv qj 0wkto 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 conb1szxn bu2b) azpls38v0c1t) nected 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 maz)sc0bx 2zv1 lta 8bbnp 13)usss 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 mwfd-r jp.,*rk oves 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 object moves to the left with speed 1.00 m/s. What is the speed, .pkd*rr-wjf 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 ocidmdsy-,;d1pt, . l horizontal surface without friction. A block with mass M1= 3.00 kg initially moves timstpo 1d,,dlyc. -d ;o 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
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 ahjg- 097:ta+dvrfe i/-zaoprpi )*g b 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 hirtj)zovi:r ba- hg/e-a9d p *g +f7ip0ts 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 the)3.rtuu:v -p/ qvp+yh fvfqg1n 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 os g(n;;hk(h3,1ltim8oi tnp uf the linear momentum of two solid objects colliding on the x-axis. Which one of the following statements must be true based on the informationg,in(ki(31mu; t8n h;p tohsl provided?

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