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习题练习:IB Physics Homework 5: A1 kinematics - 2D Vectors (SL & HL)

 作者: test   总分: 30分  得分: _____________

答题人: 游客未登录  开始时间: 25年10月19日 23:05  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  
  Which one of the following is an example of a vector qu dixr /icen3;x:s1x6 xantity?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following so ir,kpa0 a4q/:3ypx operations will not change a vector?

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following is an accaxdn 5 d (j7i,3zo+*a9vs fcuxurate statement?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The resultant of two vectors is the smallest when the angle bet8vv *u eofnsd.t ,o4d/9hykpa 2-ysi*ween them is

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two displacement vectors have magnitudes of 5.0 m and 7.0 m, respectiv);uf pr69pe 7lqy3f:f 2cs sxiely. When these two vectors are added, the magnitude of t )pqf2y 6e x:c;su si937rlffphe sum

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two vectors, of magnitudes 20 and 50, are added. b66.qs,od 0 wp9ag ixwz9,be gadj60i Which one of the following is a possible answergs6,90wb9q 6j, 0zpgii e6 .bdwdoaxa for the magnitude of the resultant?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three forces, each having a magnitude of 30 N, pull jn(*p xhc-hx1on an object in directions that j1-*nxp hx (chare $120^{\circ}$ apart from each other. Make a statement concerning the resultant force.

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In the diagram shown, g 2aqe0g0p 3yathe unknown vector is


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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Ignoring air resistance, the hori u,skwsopj7pg27 q 24yel)g8bzontal component of a projectile's velocity

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Vector A has magnitude 8.0 m at an angle of 30 degrees below the +qkey4vq gu;i+ 2sy:k *x axis. The y componente y *uqkqg; k4syv+:i2 of A is

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you walk 6.0 km in a straight line in a direction(3jszz x+f 0zs north of east and you end up 2.0 km north and several kilometers east. + s3s(fzxzz 0j How many degrees north of east have you walked?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A butterfly moves with a speed of 12.0 m/s.n+: 9tqh/rsb d The x component of its velocity is 8.00nbts:r+/dqh 9 m/s. The angle between the direction of its motion and the x axis must be

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 400-m tall tower casts a 600-m long s + oqy+5soz/ms(o0yywi ux7kr8.xi4 e hadow over a level ground. At what angle is/ s z +y ix. r8iyk(wqou7moxo5s0e4+y the Sun elevated above the horizon?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two vectors A and B have components (0, 1) and (-1, t4d4 )*n6e okj3kfpkw 3), respectively. What are the components of the sum of these two vecto6edok) * k4k3f4jt pwnrs?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two vectors A and B have components (0, 1) and (-1, 3), respectivig/77hlwnoy -ia c- o5ndr ,z8ely. What is magnitude of the sum of these twcoyn 5a hnr77oil- /,wd8g- izo vectors?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Vector A = (1, 3). Vector B = (3, 0). Vector C = A + B . Whatg;r*5e0i (licf stzb+ is the magnitud (5ls*bi0f gize t;+cre of C ?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A car travels 20 km West, then 20 km Southt(8rn;6dc4a h n0zjcz. What is the magnitude of its displacemen4anzn tdhj(ccrz 6 08;t?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three vectors, expressed in Cartesia/nkuj 1kla5x3owu p2,n coordinates, are
S = (-3.5,+4.5)
T = (0,-6.5)
U = (+5.5,-2.5)
What is the magnitude of the resultant vector S + T + U ?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three vectors, expressejhqk4+p9ee r kwx, +87rh o3i.j7wzmo d in Cartesian coordinates, are
S = (-3.5,+4.5)
T = (0,-6.5)
U = (+5.5,-2.5)
What is the angle of the resultant vector S + T + U measured from the positive x axis?

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If vector A = (-3.0, -4.0) and vector B = (+3.0, -8.0), what umj,r+njlc lz8p51. 56r,ear2 shd dkis the magnitude of vector C = A - B ,l klr5ads5j r jchnpr6d+. 8ue2mz,1?

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A runner runs halfway around a circular path of radbke vjicl6rx,1-jxh-82l -f . zx/y:o/g kbvwius 10 m. What is the displacement of the joggerkjlgvozeh- -flx/,:vwjxc2/r .-8 xy 6ik1b b?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two forces are acting on an object as shown in Fig. below. ap9taw-7l;vzm ,eh0z What is the magnitude of te;z h,7 aw 0a-9zvlpmthe resultant force?


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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two forces are acting5 uhl bae6zkv -a)59ns on an object as shown in Fig. below. What is the directio 6zhv ks9b-)5e5laa nun of the resultant force?


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24#
 
填空题 ( 2.0 分) 切至整卷模式 搜藏此题  
  Vector A is 4.8 cm long and pointwa4yi9bmmon,5cs1 a4w0 1 nyts along the positive x axis. Vector B is 9.7 cm long andw0nmya t 94mys1c1i ow4a,n b5 points at $+40^{\circ}$ to the negative x axis.
(a) Determine the x component of Vector A $A_x =$ (数值)  $cm$ and y component of Vector A $A_y =$ (数值)  $cm$
(b) Determine the x component of Vector B $B_x =$ (数值)  $cm$ and y component of Vector B $B_y =$ (数值)  $cm$
(c) Determine the sum of these two vectors in terms of components. $R_x=$  (数值)  $cm$ and $R_y=$  (数值)  $cm$
(d) Determine the sum of these two vectors in terms of magnitude  (数值)  $cm$ and the tangent value of the direction angle (measured from the posive x axis rotated in the counterclock wise direction) $\tan \theta = $  (数值) 
Please only fill in numerical values in the above blanks!

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25#
 
填空题 ( 2.0 分) 切至整卷模式 搜藏此题  
  Vector A is 82 cm long and xhm*8y m(q s-lfvm b0*fc: m8rpoints at $30^{\circ}$ above the positive x axis. Vector B is 20 cm long
and points along the negative x axis. Vector C is 38 cm long and points at $45^{\circ}$ below the negative x axis.
(a) Determine the x and y components of Vector A: $A_x=$  (数值)  $cm$ and $A_y=$  (数值)  $cm$
(b) Determine the x and y components of Vector B: $B_x=$  (数值)  $cm$ and $B_y=$  (数值)  $cm$
(c) Determine the x and y components of Vector C: $C_x=$  (数值)  $cm$ and $C_y=$  (数值)  $cm$
(d) Determine the sum of these three vectors in terms of components. $R_x=$  (数值)  $cm$ and $R_y=$  (数值)  $cm$
(e) Determine the sum of these three vectors in terms of magnitude  (数值)  $cm$ and the tangent value of the direction angle (measured from the positive x-axis rotated in the counterclock wise direction) $\tan \theta=$  (数值) 
(Please only fill in numerical value in the above blanks!)

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A plane has an air speed of 200 m/suk-ob64tw *v uauvz3/ due North, and is in a wind of 50.0 m/s to the West. The plane's speed relative to the gra6 ktbzo/ v43uvu *u-wound is

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A plane is flying due mnq0* ji dru i(bj205fbgq7z9South ($270^{\circ}$) at 500 km/h. A wind blows from East to West ($180^{\circ}$) at 45.0 km/h. Find the plane's velocity with respect to the ground.

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a speed of 12yg- t q-)bknj rh7kx7ip3.njd75po7y0 km/h is headed $30.0^{\circ}$ east of north in a wind blowing due west at 30.0 km/h. What is the speed of the plane relative to the ground?

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总分:30分 及格:18分 时间:不限时
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