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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 vr fzba*3q3+na1yz x+ right collides elastically with a second air track car nza1zv f+3a+yq *x3brwith 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 shown i)py(iec 69sm qda+.g1i.5z enyhy0rz n the diagram to the right. Cart 2 is more massive than cart 1. As they are forced apart by the release of a compressic (y pr5)qya0 zhd.ey9.e6n+sgz1imed 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 Mv0 3yc pb2*z hcp.6gxd:za y6e, held together by a string as shown in the d:*h 62cvagy0zx3c b.6ppyze 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 towardv,f vc/m +6pai each other with speeds 6.0 m/s and 8.0 m/s respectively. If they grab each other a+/m, fvc6pai vs they collide, 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 who is running at 4.0 m/s jumps onto a stationary 10uzwxzse16; rv q 5/gy7 kg skateboard. The speed of the childe 57wrx qu ;gzvy/61zs 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 truck have a perfectlcmowx6 ,f- mzuvs-f* 7y inelastic collision on a street. Which one of the following choices correctly identifies the object(s) that lose kinetic energy from the impact?m *,z6ws-7 uffc-o vmx

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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 wn:tdbf9(,b utro z--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 a t(-bz:r d,otwnub f9-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 moving at 4.0 km/h cog7r7+api ,l,u.ct sz sl3buy7llides and couples with an 8000-kg freight car which is initiais au7, 3zc7ys+ltul 7gr ,b.plly 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 before it strikes nd.*ywc 6jc,u-l yyd1 another cart of mass 3m at rest. The two6.* c -n1,jywycyldud 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 colli0 .gg9ta b:r acmsw;m8des with a stationary object of mass 2m. If both objects stick together in aperfectly inelcg srba90 :mg; .wmt8aastic 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 shot8)c1t.qgnar d through an apple. If the 0.1 kg arrow changes speed by 10 m/s during the collision (from8 1 qc.nrg)dta 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 freef jds38zp)0 q.ps jl.tly along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. .q)dls t j.pz8j fs30pAfter 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 initiallyf 0rgyn76yn n) travels to the East with speed 4V. A truck initially travels to the West withn)n gf r60y7ny speed 3V. After the vehicles collide, they move together 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 frictioh2ss rtw .izb*(mt1y,nless surface connected to an ideal spring. Initially everything is at rest and there is a string compressin(wty1 hb s2*ir t,mzs.g 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 mmbx e).j4j( sd 9ixat l0ca,m6/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 of theijl) 4t xcs9, x d.bajmema60( 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 ,a5*neejafsg ul lw0yxw.59y( t 4s5jq6 zsc ;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 spjcx6 .w9y(*ll,; zesaa0n yjs5q 5gue t w4fs5eed 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 surface without r6 gm ayi2k*b.k42fi ;rywtq7friction. A block with mass M1= 3.00 kg initially moves to the left with speed V1= 5.00 m/s when it hits a blociwt y rga26;* 74rbi mf.qyk2kk 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 then collid ;d ch4jze -1p;/qep7bol0 dffe.
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 ofreae g8 nr1b p;:6+ 8t;snecbf two solid objects colliding on the x-axis. Which one of the fo8sgee8+r;tn ce6 rf1bp :a bn;llowing statements must be true based on the information provided?

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