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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 velocity v to the rightnpwg(faeiy610e*wy qu1 gc 24 collides elastically with a second air track car with mass 2m and initial veloywi1*4w2 f g gq1ane6puc(0 eycity 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 tog)ar vn, hbqd(+qk)c*orcr/d0 ether 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 quant rr(0))+d crbcqnadhk,qo/*vities 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 tw y.abjx9(0ktd guu 9cjw:t 6-ro objects with 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 horizontal frictionlessw(9xuytct j:. u6gab0d 9-jrk 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 ruo m-;* b+4d)nfqcgd,7mlfpt hn 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+f*t)mc4 mdln,fohd-pg 7bq; 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 be15xh2ju;pm* vs(yc onto a stationary 10 kg skateboard. The speed of the child ancsp( 1*v;xu2y ebj5mhd 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 have a perfectly inelastic col ao*dzmu 1bfixt(q-5h. a bd:)lision on a street. Which one b x.(-ahq bt a*:o) dmz5dui1fof 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 horizontallyd.d4 s9j6;qxf/gr 3;zud:pl.dmzhxs io9q 8o from a spring gun that rests on a horizontal friction;.; d9sqpz6hmofx r4 j o/dld8.d:x3u9siq zgless surface. See the accompanying figure. The mass of the gun 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 at 4.0 km/h collides and* uuo.k9 zr.xpnx pz0f).qxphj2/ j(v couples with an 8000-kg.zoux(nhfvkp0j) /q.r* p. j z9xupx2 freight 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 velocity v befojyr 2lnmr19 qhy k/3j-re it strikes another cart of mass 3m at rest. The two carts couple and mover-lyh93j2 mj/k r1yqn 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 speeq2t 0un du78ca 2odj8ad v. It then collides with a stationary object of mass 2m. If both objects stick together in aperfectly inelastic collision, what is the fdqt ud 022ncuo8a8a7 jinal 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 changes spee jim2a2ppxd+d3.cv bu: -4e kvd by 10 m/s during the collision (from 30 m/s to 20 m/s) and the appmjeb- x.p+uvvdk32 pd2ai:4 c le 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 carx.-. zzd tjsjmso8(w; is 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 (dm.-so.t8j zsj ;zwxstick 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 speed 4V.9s-:fny3bv4icr5 vu y A truck initially travels to the West with speed 3V. After the vehicles collide, they move together to the West with cov5suy:ricfy vn4b 3- 9mmon 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 s/y s*sa:bcyrplhjn *c: 4f0cz 06rs6 purface 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 atr0lhjp6spn s z/yc0y:6:r*bfca s4*c tain 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 s+dm61nraor : r yxj5c.peed 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 le j1od:x 5m.yrnca6+rrft 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 al9ed;hblfq v / a,*uln*ong a horizontal surface without friction. A block with mass M1= 3.00 kg lu*lheq *9;bv f a/n,dinitially 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. 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-ehr +pfu , cz0jy/kz3s place along a horizontal surface without friction. A block with mass M1= 3.00 kpcj -rhzyk3+/ u,ez0f g 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. 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 sp7nwkrfo.qovi8r) 1(z ace 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 lineabj: 7 q(pgdy *yeku: 9lw;1sqir momentum of two solid objects colliding on the x-axis. Which one of the following stp1(7sulwky:: dyeg iq*;9 j qbatements must be true based on the information provided?

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