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习题练习:Impulse and momentum

 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 ti 0 lzux60tlh2yme t when maximum braking force iz0 0l2lt yh6uxs applied. Assuming the braking force is independent 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 doubled, its_______is alsol:. ;r, t37nhb 7tzp vfeaica+8tdwv/ doubled.nct7a:hve.pdaz87+ i vt/w ,t r b;fl3

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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-hyqebcu ) fd4 6rb.0at $\Delta$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 most closely assedl+tjo 53p5 49 lcqxpociated with the following54je oqlp+39dpx5c tl observation about an isolated object: “The linear 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 bj9 ;iio,o f m.+* hciaa-gtl(always in the same direction og-o ba(9jlhm ,c;tafii*+. ias 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 netuc(z; b*)lymsb 7zhk/n3/fab force act to produce a change in momentum of 200 kga) /z*uylk ch; bnb/z(3bm sf7.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 c03u-d (t/qlpw ce d)pmbi9uhx1+ci/ momentum. Q can have more kinetic energy than P if it+edm c1p ih u-09 wxc/q3/l)uitd(cbp:

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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/srxupg:v 9 bb:sb1xe,d)+y. 9 lfrwbj ) collides perpendicularly with a wall and bounces off with a speed of 4.0 m/s in the opposite direction. What is the magnitude .b bsrg b99fw,xdyerv) +l:j p)bx:1uof 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 fallxppw0 nl;//8 ;dnx tq(ccg6e.yng o ;xs freely from a height of 4 meters on to a trampoline. The trampolodgpxcgpnt n0ex c/6 ;(x;q .w;l/8nyine then bounces her back upward with a speed equal to the speed at which she first 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 coll5 znd 6)gp:ndk2xhbl1 ision in space. The mass’s speed was unchanged, but thxb z d2):ndk5p1gl n6he 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-baseball is in contact with da kmkaa5)-:tmk* 9 h,s uh3gfthe 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 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 magnit adk af:msg)hakk*h, -59m3tuude 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 an x-/iezecu1n( q+ component of linear momentum equal to 24.0 kg.m/s. The object is moving in tz1q/e en+c(uihe 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 velocityotwuh7u- h;h, V, has acceleratw ;,uoht u7h-hion a, and is at position (x,y). In what 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 2.0pqbw6w y-2b q6 kg falling straight downward hits the ground with a speed of 0.90 m/s and then rebounds straight upward with a speed 6 bwq-qwy 26pbof 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 fa mh,e6(vr3a qtlling 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 gqe,36mvarh t(round 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 the right across a horizontal sur;5 krsbxta2/a5-dxgcp y 1 y(rface whiaxp;sk5 cg5/r (2y by1d xt-arle 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 )rz1 ex-2y6ro ox,zwq12.0 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 acts on it. Which one of the followz)w r1o2ze qrxo,y6x- ing 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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