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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 quantity?h 9g,/ab.gofd

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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 wqe 8jmex( /cx0ill 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 accurate mn u.b:k4s7dsn2rsadu+ u40p 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 h4 ,zu5 yom.da,f c0(xysct6vangle 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 mahq+3d h 56wm)nsg+oxggnitudes of 5.0 m and 7.0 m, respectively. When these two vect 3g6ws+ o5q+dxh gmnh)ors are added, the 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 2* 7d 6v 7hvyxivv0unu:b h2w*f0 and 50, are added. Which one of the following is a possible anfiu* 7nh2v vvu7* w dy06:vhbxswer 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 rp ,yxbde8 ,f,of 30 N, pull on an object in directions that ap f ,8bxr,,ydere $120^{\circ}$ 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 vector cc.ui2 b :7 /aodc k+/h,lddxlis


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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 h36qs uoddl9 2zorizontal 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 v*rtx36 a h3ts u1e9rgof 30 degrees below the +x axis. The y cosu h93rx 6 rvgt3*eat1mponent 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 directiou ,)8:i:laqg6 jdclzan north of east and you end up 2.0 km north and several kilometers east. How many degcjua86ld)::q ga liz, rees 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. The x component of its velocsn rs,03 7kk+)stbt4,i r tqpkity is 8.00 m/s. The angle between the703,4tki +) rtsqssbrn,tpkk 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 castsxa m pio/i2i56maucsx /(pt02 a 600-m long shadow over a level ground. At what angle is the Sun elevated above the hox(52xm i //ota 6si0p2mup icarizon?

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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 i 5/aa5gvc /nm(-1, 3), respectively. What are the components of the sum of these twoi5avm/5cng a/ 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 h i-red*3; yptt68nx5 k)narelave components (0, 1) and (-1, 3), respectively. What is magnitude of the sum of these two;i8akrp)enx65 *l3n -redtty 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 Brtj8,s:,x7aax5 /yx*mgx kya = (3, 0). Vector C = A + B . What is the magnitude of C ? x,g xtj5, 7sx:k/y8amxry*a a

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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 magnitude of its disp:gfccp (y *nnd ts2ac+m:5u,placeme:myd spncng25f + c:p(ca*,utnt?

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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 Cartesr8nc w,bjp :4eian 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 Cartesian coordinates, auht9my k0noj*u ,t91t re
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, -4.0136jj xa ci p15 si *qzkwc4liyxx7y,.) and vector B = (+3.0, -8.0), what is the magnitude of vector C = A ,jzayi1p c4xl5w71c.*6qijxy 3s kix- 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 circulge)0 yb4nq c9hd96 d-i2kq iefar path of radius 10 m. What is the displacem0qh)icfg6nd2d-b 9keye q9i 4ent 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. Whath8q qd-4yd tx;fx9 ml1 is the magnitude of the resultant-1dlh;xt dqx9mq 8yf4 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. What imk.aov 5rpu95 s the direction of the resultant fouk a mpo9v55.rrce?


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24#
 
填空题 ( 2.0 分) 切至整卷模式 搜藏此题  
  Vector A is 5.3 cm long and points along the positive x axis. Vecjptuk. nanhn aue--/g*yddk( m9 +) *utor B is 9.3 cm l m*kjnyhue-(pn n.ua9k/ ad ug-* +)dtong and points at $+39^{\circ}$ 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 72 cm long and pp(d,l,3 rmv-l srrhb .oints at $30^{\circ}$ above the positive x axis. Vector B is 25 cm long
and points along the negative x axis. Vector C is 21 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 or1g4db (-/ojlpx ( mmkf 200 m/s due North, and is in a wind of 50.0 m/s to t4kj bro-(l1pd /m( gxmhe West. The plane's speed 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 (k l 5haltv4h /u;wzd+g-sgz.7$270^{\circ}$) 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 s fkt 30+t4rnfipeed of 120 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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