Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XII  >>  Math  >>  Vector Algebra
0 votes

Find the scalar and vector components of the vector with initial point $(2, 1)$ and terminal point $(– 5, 7).$

$\begin{array}{1 1}(A) \; -7\hat i + 6\hat j\; and \;-7,6 \\ (B) \; -7\hat i - 6\hat j\; and \;7,-6 \\ (C)\; -7\hat i - 6\hat j\; and\; -7,-6 \\ (D)\; 7\hat i + 6\hat j\; and \;7,6 \end{array} $

Can you answer this question?

1 Answer

0 votes
  • If the initial point is $A(x_1,y_1)$ and the terminal point is $B(x_2,y_2)$,then $\overrightarrow{AB}=(x_2-x_1)\hat i+(y_2-y_1)\hat j$.
Step 1:
Let $A(2,1)$ be the initial point and $B(-5,7)$ be the terminal point.
From the information in the tool box we get
Step 2:
Hence the vector components are $-7\hat i$ and $6\hat j$ and scalar components are -7 and 6.
answered May 17, 2013 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App