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习题练习：Impulse and momentum
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 作者: admin  发布日期: 2024-08-07 16:03    总分: 17分  得分: _____________

答题人: 游客未登录  开始时间: 24年08月07日 15:54  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  
  94.16: A car of mass m, traveling at speed v, stops in m6zp qhv+)u/qtime t when maximum braking force is applied. Assuming the braking force is independent of mass, what time would be required to stop a car of mass 2m traveling at spz pm q+quv6h)/eed v?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.04: When the velocity of a moving object is doubled, its____) q/ja el.zcq -lcu mtat0*pb)4u)j-c___is also doubledcq-bz) 4l.at )/uj-u*m cj)tpa ql0c e.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.06: Impulse, Fne )z0w:vjro ji:d nuw/8t $\Delta$tis best related to:

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.05: Which one of 3 8kkb*necryk 00f puj *:7qvfthe following choices is most closely associated with the following observation about an isolated object: “The lin3yr knp*f0kj0v:*eu qc 7fb 8kear momentum of the object is constant.”?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.21: The change in linear momentum of an object is alwztt(opmnu 9 ;/ays in the same direction as/ ;uot9 (tzpmn the

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.08: How long must a 100 N net force act to produce a chra)fz h82thd9m6 ,lciange in momentum of 200 kg.r)ihz82 ta6d9c mlhf,m/s?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.29: P and Q have the same momentum. Q can have more kinetic energy than wr81*01x zt ;xtwqfayP if z1 x8f r1t;aw*yqx0twit:

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.26: A ball with a mass of 0.50 kg and a speed of 6.0 m/s collides perpendiculic7s gh th79r7arly with a wall and bounces off with a speed of 4.0 m/s in thc77is h7gt9hr e opposite direction. What is the magnitude of the impulse acting on the ball?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.08: A 50 kilogram gymnast falls freely from a height of 7*k0g:y xkgqqnffd jxtrf*9)q) 47 , o.jdydw 4 meters on to a trampoline. The trampoline then bounces her back upward with a speed equal to the speed at which she first struck the trampoline. What is the average forcegd)7xq*k*rxydg:. djn4)j f t7oq0q9yfk, f w the trampoline applies on the gymnast?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.27: A 2.0 kg mass moves at 10.0 m/s when it has a collisiorx ,11 hue,. gb2moncsn in space. The mass’s speed was uncnce1rgbmu 1s2.x, oh,hanged, but the direction of its velocity was altered by $80^{\circ}$. If the collision lasted 0.25 s, what was the magnitude of the average force exerted on the mass?



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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.13: A bat striking a 0.125 kg-btmffr3u-n -7..)mr 6)snz leq3rc sasaseball is in contact with the ball for a time of 0.03 seconds. The ball travels sfcr)rsra7es6q3 n .znl-3ut-.f m)m in a straight line as it approaches and then leaves the bat. If the ball arrives at the bat with a velocity of 4.5 m/s and leaves with a velocity of-6.5 m/s, what is the magnitude of the average force acting on the ball?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.43: An object of masx gteon: zk5lx1( 99eshtnr9;s 4.0 g has atotal kinetic energy of 100.0 J and an x-component of linear momentum equal to 24.0 kg.m/s. The objt9 5 hneto9rezxln;:(1g s 9xkect is moving in the x-y plane. What is they-component of the object’s linear momentum?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.05: At an instant of time t, a point object of mass M moves with velx8xlrh :/gnnvn (0x0jim 9 5zlocity V, has acceleration a, and is at position (x,y). In whl vxx085n 0/z9nmxj:rgi n l(hat direction must the linear momentum of the object be directed at this instant?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.32: A rubber ball of mass 2.0 kg falling straigh,f;)dn1s p, 7.dwrf k;s9 5vxrhvrkbtazt8 o;t downward hits the ground with a spss df,pw.fzv; rdhxr otkn 7t5;k;8v9 1 )bra,eed of 0.90 m/s and then rebounds straight upward with a speed of 0.60 m/s. The collision time of the ball with the ground is 0.25 s. Treat g = 10 N/kg.
What is the magnitude of the average acceleration (in units of $m/s^{2}$ ) of the ball while it is in contact with the ground?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.33: A rubber ball of mass 2.0 kg falling straight downwxc;(nnstwj+ f er,t.n (i)7piard hits the ground with a speed of 0.90 m/s and then rebounds straight upward with a speed of 0.60 m/s. The collision time o.(i (i;+xcptejtnr )7n f,snwf the ball with the ground is 0.25 s. Treat g = 10 N/kg.
What is the magnitude of the average force (in units of Newtons) exerted by the ground on the ball while they are in contact?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.12: A box of mass 5.0 kg is being pushed to trgl nx,f+asj0x ,b s4/d-3y wvhe right across a horizontal surface w0dfns3 +, vb g-x wsx,4jyalr/hile a constant frictional force of 8.0 N acts on the box. At some instant of time, the box has a speed of 4.0 m/s and an acceleration of$3.0\; m/s^{2}$ . What is the magnitude of the net force acting on the box at this instant?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.12: A box of mass 12.0 kg is being pushed to the right across a horizone 3 )cs (r-oe j ::/spa2szcwqeg(cyj*tal surface. When the box has 12.0 J of kinetic energy, a 12.0 N net force acts on it. Which one of the following choice( j /-qze 3 cwy:p*(ecgoas)rc2 sj:ses best represents the magnitude of the linear momentum of the box at this instant?

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  • 姓名:游客(未登录)
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    总分:17分 及格:10.2分 时间:不限时
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