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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 right collides elq6 n(4i mvu4/ic4c7f0rhnmqkastically with a second air track car with mass 2m and initial velocity zero. What is the cqvq6 0i /7 m h4rn(c4iunfm4kvelocity 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 5ju104 5ot my,mhf eycms;f6p 2 are held together as shown in the diagram to the right. Cart 2 is more massive than cart 1.eo t,1;4sf60mpyym cfumh j55 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 twzm(8vd8 c ,lirg7vt4io objects with unequal masses,m and M, held together by a string as shown in the i d,t7lvri88(c v4gm zfigure 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 1008a6vo) louy6 2bnzhg2 kg run directly toward each other with speeds 6.0 m/s and 8.0 m/s respectively. If they grh8 lobyzauvng2 6o)26ab each other as 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- heqoyk z m84fa-v 7-hz3zd7e who is running at 4.0 m/s jumps onto a stationary 10 kg skateboard. The speed of the child and the skateboard is approximate ezym8o-e dh-z v- 7h7af3k4zqly:

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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 6x) :gqekzb,.64m tg9szvk) z p000 kg truck have a perfectly inelastic collision on a street. Whi gsg.zk6 t:,)z9qbpm ze x4)vkch 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 horizontally from a spring gun that reststw4s9d4s u97k pmvc0 yebj p26 on a horizontal frictionless surface. See the accompanying figure. The mass of the gun is M. If the kinetic energy of pc p7094 eku6b dmjy92wt4ss vthe 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 couples wit h2 tl)lyiwwd l(51iv(h an 8000-(l w)wid l5htv(l1iy2kg 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 before it strikes anot+t 3j4zsmo6 irher cart of mass 3m at rest. The t4m3+s6io ztjrwo 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 objwd hcxo4ei+d 0m 6:h/n7m;akvect of mass 2m. If both objects stick together in aperfectly inelastic collision, whatdxh4 c6 mwh+/o;k : 0veai7mnd 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 i.ulv e;j/mht-.8a.k pjqti -5:kt hythrough an apple. If the 0.1 kg arrow changes speed by 10 m/s during the collision (from 30 m/s to 20 m/pii.jmh /l-j-vqta5;y t.tkk. :u e8hs) 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 along a railroad track at 7.0 m/s and coft+/htf79qc t 5n:i- yberps r,6ppv8llides with a tanker cay tchspe 687v + fpt-r bfp,5qrt9n:/ir that is at 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 initiallys:1 fj hgdn)1x0d5 pxv travels to the East with speed 4V. A truck initially travels to the West with speed 3V. After the vehicles collide, they move togethes 0n1gjx:hpdfd)vx5 1 r 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 fr 3pr53*iddsi11vzy) ud8u h0pte8 yxvictionless 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 aftety3 idu58 u8hd*)p 1ydx0 svi3 r1zpver 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 g;b+b4irm h8b6p m/o fspeed 5.00 m/s. A 5.00 kg object moves to the left with speed 3.00 m/s. After colliding, the 4.00 kgbbm 4i8 b/+;g6pfhom r object moves to the 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 two blocks takes pyvd i0f,.2 u0ha b)m-gz8ruvplace 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 M2r y8u2p0v biagh,u0md . -vzf) = 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 blopqjsj3 xm (r b/ym+ d(xm65la4cks 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 with speed V2= 2.00 m/s. After colliding, the block with mass M1 is moving to the right wit6j3/l5xas+bxy ( m dmmr p4(qjh 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 nv.rmbky s8irg* 5o 98mzt/a,B, move 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 shows the magnitude of the lmfnho nf(eza92kic3 n*;+ f;f inear momentum of two solid objects colliding on the x-axis. Which one o fck ;fzfe9ni(* 2noh;a +3mnff the following statements must be true based on the information provided?

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