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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 quan pt4 *egqg.uj9tity?

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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 operations will not chan xzg.xp1b 7r3fge 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 dq mb8d i4:mp3/m;rro an accurate 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 angled y/ 6l2oq,edn /w6dfr between 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, respectivvbt5d2h* k)mmb bi),i ely. When these two vectors are added, bm5 id)k)2*mt,b i bvhthe magnitude of the 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 a,v5. + z pprcc*2zilledded. Which one of the following is a possible answer for the magl+l. p z*pi5cce2vr,znitude 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,/ cep7b zeqp7-)sx5wk pull on an object in directions tha)xez-p/w 7k5ceqsp b7t are $120^{\circ}$ 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, the unknown vect *rb6j 8l7 u6kx* b-dafgkc+wnor 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 horizontal component of a projectile'si ;oycwg:4 c4m 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 +x axis. Thcq jd*5hgb8 ,se y c ,bc jdhqg5s*8omponent 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 direction1urd w6wm:hd6 north of east and you end up 2.0 km ndd:h uw6 w1m6rorth and several kilometers east. 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 13m bk 4gbd8y+t x3xsjllj0m. ,4u6htn2.0 m/s. The x component of its velocity is 8.00 m/s. The angle between the direction of its motig 3u4bbl 3j64tm8.+ , lsnxx0mythjd kon 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 shadow over a level ground. e- lnh c,e5ex s..hx:eAt what angle is the Sun eseh5cxe.h nl, .-eex:levated 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, 3), respectively. What af mnz2 m;u1ut)dyw)7 ire the component i)wtu);mdmn1zf7yu2 s of the sum of these two vectors?

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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 componr 1w80xaeubm jyuj5)mp w/j;6ents (0, 1) and (-1, 3), respectively. What is magymw 6e8abp0j u5 j/1 )r;xjmuwnitude of the sum of these two 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 rx: o1zi,hh 60 2ei cc/,uinvk+ B . What is the magnitude ofv,c i0r6ihc1x/2 ,kzeu i ohn: 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 South. What is the magnig7-l(dem r -fvn20cj4e9 ie uytude of its displacem f9-2viryunm(0 ecgel- d74je ent?

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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 Cajtzwk pzs,z - a0n/m372j 1yhj)dh rq3rtesian 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, expressed in Cartesa)km9 v6lcd+sk9e ,mo ian 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 is the magnitude o8y ccauh5 -,fuf vectouy5f ,u 8ach-cr C = A - B ?

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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 circulap2dz 8a / acjxewg60db2oo , y.f2jp/tr path of radius 10 m. What is the displac,/ oy2j .26j0tz8gecodd bfx/waa2p pement of the jogger?

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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. What qidc7u7sx -sm8d8+wdis the magnitudemx 7dcdu- + w7qs8sd8i of the 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 acting on an object as shown in Fig. below. Wha86vzpk un0v+w t is the direction of thewv zup0+ 6vn8k 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 5.2 cm long and points along the positive x :3b 7qzzcph8ty1g g i5axis. Vector B is 6.9 cm long and poy 7:5cz1zti8h3b gqgpints at $+35^{\circ}$ 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 68 cm long and points at,sm d 3x isb1eti4y6t08 ,jntg $30^{\circ}$ above the positive x axis. Vector B is 24 cm long
and points along the negative x axis. Vector C is 30 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/s due North, and is in a wind of 50.0 m:xvi:8sx -muc /s to the West. The plane's -cu:svix: m8 xspeed relative to the ground 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 South *cgrcpkhmrmc)v: p6; j q*7k)($270^{\circ}$) 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 120 km/h is headedwt8w zecf.a/2v m4ey/ $30.0^{\circ}$ 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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