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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 f50 twg8iu9 72ug5msj cmhm: l)e-nrav, stops in time t when maximum braking force is applied. Assuming the braking force is independent of mass, what time would be required to s5mc 59s ntiw7ja m8hfg:0euu2-lrmg)top 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 objec7w. 26-fix72 -znj3t okyr6gbc g3m/zxl wjna t is doubled, its_______is also double33nr m7g la2k.fcnwibz--2ty7xj 6zw j/ox g6d.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.06: Impulse, Fnep+k vavaap8inc5yv*hb8s 2 v29my6p1 t $\Delta$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 d+od g.fs;usf ;jnel;zgp4h(.: x7wr associated with the following observation about an g nsx(:owepurl 7sdz 4f.;jg d;. fh+;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 mom +( v+3k9ftlqf0*ab-q tctbnwentum of an object is always in the same directiof*b tq t+tw(90 aq -fk+vbnc3ln 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 momentum ozaewl 3ln4* ;ef 200 kg.m/se*4lw 3ezan; l?

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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 ki2- kyo;h:/9)f9 *y m nbdzzq +h4y jtx8eamqionetic energy than P if it:oy4 a+y /2toxq ;*-jd)8 qhmi9kb:nmfey9hzz

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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 ax p.f7 zuktf,+nd a speed of 6.0 m/s collides perpendicularly with a wall and bounces off with a speed of 4.0 m/s in the opposite direction. What fkf x .7upz,t+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 4 meters on to a tratz)cbir .wb.bor(;g- mpoline. The trampoline then bounces her back upward with a speed equal to the speed at which she first struck the trampoline. What is the averai;ob g- .t)r wb.c(bzrge 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 collisio4bgztl n+*2o/rzd 2jj n in space. The mass’s speed wa +jljz4 tnzbo/d22 r*gs unchanged, 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-baseball is in contact with t-w; 3ynr) yo6uq1abzj0m (km mhe 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 lemyyw(zm 6)oab0;ku jqr 1-3nmaves 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 an x-co;h*9eylx feqtc6c .mms;e 518k jf1tq mponent of linear momentum equal to 24.0 kg.m/s. The object is moving in the x-y plane. What is they-component of c;e*t jtm ceef 1ykm8f 6lqq;9.5shx1 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 velociyfl2e;)dukvt 1t n5l(2s+ mezty V, has acceleration a, and is at position (x,y). In what direction must the linear momentum of the object be directed at this instanem y)elst2dvz2kn(1f5t;+ul t?

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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 straight downward hits the 2epqa273xl ciground with a speed of 0.90 m/s and then rebounds strapa i72c3xle2q ight 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 maz6njwb5,o im)w/ *(kelb p/w.dlro 0yss 2.0 kg falling straight downward hits the ground wi5oi6rm o /w *(wl/bb,pndz)l.kew0 j yth 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 = 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 arxm9harsgtg2 x jr350g +7b 6surface while a constant frictional force obs 3h r g 620+xarmajrgg579txf 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 iswxen(q7 -9 wxsh 159uah silu9 being pushed to the right across a horizontal surface. When the box has 12.0 J of kinetic energy, a 12.0 N net forca9- 9xuhlh5qs wn9 7x uiew1s(e acts 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
未答题: 已答题:0 答错题:
当前第 题,此次习题练习共有 17 道题

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