Vektor (Skalar/Orthogonal)

Vektor (Skalar/Orthogonal)

10th Grade

14 Qs

quiz-placeholder

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Vektor (Skalar/Orthogonal)

Vektor (Skalar/Orthogonal)

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Ardiliansyah M.Pd

Used 57+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui vektor  a=i+2j+xk\overline{a}=\overline{i}+2\overline{j}+x\overline{k}  dan vektor  b=2i+jk\overline{b}=2\overline{i}+\overline{j}-\overline{k}  serta panjang proyeksi vektor  a \overline{a}\   pada vektor  b\overline{b}  adalah  136\frac{1}{3}\sqrt{6}  . Sudut antara vektor  \overline{a}\  dan vektor  \overline{b}  adalah  α\alpha  , maka  cos α\cos\ \alpha  =...

 166\frac{\text{1}}{\text{6}}\sqrt{6}  

 196\frac{1}{9}\sqrt{6}   

 366\frac{\text{3}}{\text{6}}\sqrt{6}  

 296\frac{2}{9}\sqrt{6}  

 136\frac{1}{3}\sqrt{6}  

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui vektor  a=i+2j+xk\overline{a}=\overline{i}+2\overline{j}+x\overline{k}  dan vektor  b=2i+jk\overline{b}=2\overline{i}+\overline{j}-\overline{k}  serta panjang proyeksi vektor  a \overline{a}\   pada vektor  b\overline{b}  adalah  136\frac{1}{3}\sqrt{6}  . Sudut antara vektor  \overline{a}\  dan vektor  \overline{b}  adalah  α\alpha  , maka  cos α\cos\ \alpha  =...

 166\frac{\text{1}}{\text{6}}\sqrt{6}  

 196\frac{1}{9}\sqrt{6}   

 366\frac{\text{3}}{\text{6}}\sqrt{6}  

 296\frac{2}{9}\sqrt{6}  

 136\frac{1}{3}\sqrt{6}  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui vektor  a=2i2j+xk\overline{a}=2\overline{i}-2\overline{j}+x\overline{k}  dan vektor  b=3i4j+12k\overline{b}=-3\overline{i}-4\overline{j}+12\overline{k}  . Jika panjang proyeksi vektor  a \overline{a}\   pada vektor  b\overline{b}  adalah 2, maka nilai x sama dengan....

-2

-1

1

2

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 Diketahui segitiga ABC dengan titik A(-2,3,1), B(3,-1,2) dan C(2,1,-3). Jika  u\overline{u}  mewakili  AB\overline{AB}  dan  v\overline{v}  mewakili  AC\overline{AC}  , maka proyeksi skalar  u pada v\overline{u}\ pada\ \overline{v}  adalah...

8

6

4

2

1

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui vektor  a=ij+k\overline{a}=\overline{i}-\overline{j}+\overline{k}  b=i+j+2k\overline{b}=\overline{i}+\overline{j}+2\overline{k}  , dan  c=3ik\overline{c}=3\overline{i}-\overline{k}  . Panjang proyeksi  (b +c)\left(\overline{b}\ +\overline{c}\right)  pada  a\overline{a}  adalah ...

 322\frac{3}{2}\sqrt{2}  

 222\sqrt{2}  

 434\sqrt{3}  

 11331\frac{1}{3}\sqrt{3}  

 233\frac{2}{3}\sqrt{3}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui vektor  a=6i+2j+3k\overline{a}=6\overline{i}+2\overline{j}+3\overline{k}  dan vektor  b=3i+j2k\overline{b}=3\overline{i}+\overline{j}-2\overline{k}  , maka proyeksi skalar ortogonal vektor  \overline{b}  pada vektor  a \overline{a}\   adalah...

1

2

3

4

5

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Panjang proyeksi vektor  a=i+3j+2k\overline{a}=\overline{i}+3\overline{j}+2\overline{k} pada vektor  b=pi+4k\overline{b}=p\overline{i}+4\overline{k}  sama dengan  115\frac{11}{5}  . Dengan demikian nilai p = ... 

1

2

3

4

5

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