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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 time t when maximum bc 8/j qh3iyaxx9c+i;hraking force is applied. Assuming the braking force is indepenyc 38j+ix9;chxha / qident of mass, what time would be required to stop a car of mass 2m traveling at speed 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 doantddf ei 5os ljt/7,ps( ,e9;ubled, its_______is also doubled; 7saft,dns e,/ield59(o tj p.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.06: Impulse, Fnet tmirf9cu+hb)wd*1 . e$\Delta$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 the following choices is w r,0 h3 6oj3hej2zegcmost closely associated with the following observation about an isolated object: “The linear momentum of the object is constae3 w3e 0hhgjz6ro2cj,nt.”?

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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 objecqb)p p+ o 6)iuch6rqiu;g-5sl t is always in the same directionpq)6 6;oiupgic) +q u-rhlb5s as 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 change in moment/3z7i dxs x1e9s 3sxlnum of 200 kg9/3xxdi 1sse lsznx37 .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 s y3 ifs12o wkeqm:+we7ame momentum. Q can have more kinetic energy than P if s:1fi yo7em2 kq we+w3it:

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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 perpendicul z)x4wlgo2/m-j zbot9:n g1.,ah t ptnarly with a wall and bounces off with a speed of 4.0 m/s in the opposite direction. What is the magnitude of tmw gt:pa bh2ox1to .l)/z- ,4znt 9jgnhe 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 fallss/3*.:mguqqz hg87n emh3 oqs freely from a height of 4 meters on to a trampoline. The trampoline then bounces her back upward with a speed equal to the speed at which she firs837mn.qzhgsush oqe g *mq3/: t struck the trampoline. What is the average force 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 y 0:j(pisa6hfz6d6grcollision in space. The mass’s speed was unchanged, but the direction of its velocity was altered by s6ipg :66yd (arzh0j f$80^{\circ}$. 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 1*ighe 1/jvk cg w-k 9+f6ggujjc 2yh70.125 kg-baseball is in contact with the ball for a time of 0.03 seconds. The ball travels in a straight line as it approaches and then leaves the bat. If the ball arrj kv71gu1gf w*h9eijk-gg2 jh/6 yc +cives 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 mass 4.0 g has atotal kinetic energy of 100.0 J and a ixd/l03z 5vb;xs6htun x-component of linear momentum equal to 24.0 kg.m/s. The object is moving in the x-y plane. What is they-component of the object’s linear momentumbu/hxd03xit 6;lsv 5 z?

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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 wite.tikp x8iv1/h velocity V, has acceleration a, and is at position (x,y). In what direction must the linear momeipvxi ek t8/1.ntum 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 ofw zdar. fnhw65z ;+jfd.04 * vd*ldrlc mass 2.0 kg falling straight downward 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 of the ball with the gro5* +z rwvadd f*wr0d.j4 l.dh6lf znc;und 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 downward hit z0d6toj26 cias 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 of the ball with the ground is 0.25 s. Treat g = 10jodz2c6i6t a 0 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 the right across a horizozy rci-s/n 8p*ntal surface while a constan/nzrpc y-s *8it 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 12.02kri.ind i d70 kg is being pushed to the right across a horizontal surface. When the box has 12.0 J of kinetic energy, a 12.0 N net force kin .dir 2di07acts on it. Which one of the following choices best represents the magnitude of the linear momentum of the box at this instant?

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    总分:17分 及格:10.2分 时间:不限时
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