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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: 匿名未登录  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 speen9cs1f lbl1l3vmlon+7 +h+) u ong;z pd v, stops in time t when maximum braking force is applied. Assuming the braking force is zom)l;+7 n 1u1+pv nlsl+onbclf93h gindependent 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 velocitp w000be xy/l +(fwubuy of a moving object is doubled, its_______is also doublep wxuf+/y0 0be(ubl0 wd.

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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 i)4.cobcmwh2;b(1lwpq5 dj 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 most closely associated with t2zl6/ e v35d f;m8yymfbq.cag he following observation about an isolated obj.q zf y5v2m/8 b;yfacgm6ed 3lect: “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 always in the same dir/mh)zf:aqm 0 rection as tz :mqr0/m)fa hhe

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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 g: zp0bgxe/b 6fp)(;b)u fq* n*wubntt-b0gxmomentum of 20(n :uxz0g)/bwgt pffbue;0bb6pt*-*x) q nb g0 kg.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 t(d.21irsrm jiu )g nuep.k*d7han P if ituu(pri gj1k ddi.*ern)2.sm7 :

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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 pg11nz u zw/bg,dymq0.e.o 1w mass of 0.50 kg and a speed of 6.0 m/s collides perpendicularly with a wall and bounces off with a speed wpob0u.g d./gzwm ny 1e,11 qzof 4.0 m/s in the 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 f.a rm;pcdo6a ,rom a height of 4 meters on to a trampoline. The trampoline then bounces her back upward with a speed equ6c;.,paoarmd al 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 collision in sp eq yi2f,p:sk/f.u7b pace. The mass’s speed was unchanged, but the direction of its velocity was altesub2yf:if q 7kpp /e,.red 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 hr;mdwx o6s16-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 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 ; x6hwm so1r6dball?

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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 9 . rat6z8,+snl n4(xwot svbvq)wn 7wmass 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 object is moving in the x-y plane. Wha .t +sw4nlvqanx8zr(t6 v b)s7n,9wwot 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,x4a .dse+cnng+g o*3 n a point object of mass M moves with velocity V, has acceleratnggxen*n 4+soa+ .dc3ion 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 m,;tm+ s x k*n0clc pcjo,c)s)mass 2.0 kg falling straight downward hits the ground with a0csk,cl c n,ocm*j+xmtp) );s 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 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 downwaxt:.b2ca0 1is/zl stjrd 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 ground is 0.25 s. Treat g = . iz1tjt0 :c2 /bsasxl10 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 ew; +ksxj*jmd7/hk;lbeing pushed to the right across a horizontal surface while a constant frictional force of 8.0 N acts o/klmj+d k *j x;w7;ehsn 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 1 n)g9kemtzyp6xj b0332.0 kg is being pushed to the right across a horizontal surj6bk 0xy)gz 3pe93 tnmface. When the box has 12.0 J of kinetic energy, a 12.0 N net force 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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