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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 eda n2r/knbrg50p / /dgq(*zio9nkhv6 lastically z5dvgn/qd/(g 69nihk p*r0nb o rak2/with a second air track car with 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 t1 rxyjjo5t/j ,ogether as shown in the diagram to the right. Cart 2 is more massivjjx /oy,5 j1tre than cart 1. 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 . um)7,mgn w6w1prdbq between two objects with unequal masses,m and M, held together by a string as shown in thm 6b w.)7q 1rugpd,mwne 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 n73e/za.4aklxjx u;,ojz2 mw 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 collide, the combined speed of the two pz anzko.u ;eal 34jj wx7mx2,/layers 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 stationaryn3f1 eu5ekde - 10 kg skde -fu1n3ek5e ateboard. 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 and a 6000 kg truck have a perfectly inelastic coll1jlbvc--g9swtz6 csfj (: l 6dision on a street. Which one of the j d1 jvc-(cslw:zt f-6lb6gs9following 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 vgieiy8i:mf0 8*3 opm a spring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gun is M. If the kinetic energpyf8e o:m8im igv*i03y 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 freif1t6yye d ie3.ght car moving at 4.0 km/h collides and couples with an 8000-kg freight car which is initially at rest. The .ed6ei1tf3 yy 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 xt ,+ y:p,igycanother cart of mass 3m at rest. The two carts couple and move off y+c,tg x p,iy: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 2efbr/r61m a wvu66hw 1l 2zqxwith a stationary object of mass 2m. If both objects stick together in aperfectly inelasti6v6h1 2lrqr1 fe6 bwxamwzu/2 c 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 through an apple. If the 0.1 kw w5mg9;m 0wflsl4f sh7l6os7+vj8kz g 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 speed of2 m/s during the collision, then the m6k j 5f+8wl7l47whw0ovmgssf 9m szl;ass 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 aloy(7d*r;l xa iyeuay))ng 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 continu*a; ydyyeu7r)ix(la ) e 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 Ei)qz5s dz24 cq9j( 63 az1u murphd4c c7(oubiast with speed 4V. A truck initially z(4p i7 (drboz 4cuu1ju)qh5s 23 i cmzqa9c6dtravels to the West with 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 frictionless surface connected to an 7x+tqhgc wg*;d 9 (iqqideal 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 reachg9;* ig qqx7dwht(q+ces 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. A 5.hu8-p u:qzz b800 kg object moves to the left with speed 3.00 mp8 z zubu-8qh:/s. After colliding, the 4.00 kg 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 place along a horizontal surface zd sg9dwwp z*e363er6)w+z nowithout 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 rigzdw6nwgz69o3 *p)rs e3ed+wzht 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 a7 6wji( 7/gj gnujap)ulong a horizontal surface without friction. A block with masj/ngu7) (waij g6jp 7us 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 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, 7 f 077k0qgkttg nrc- 9,imm1q9vvuvkmove 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 linear momentum of two solid objes b5vmbd+e* e:cts colliding on the x-axis. Which one of the following stvbds+ e:*m e5batements must be true based on the information provided?

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