
Find the terminal point of the vector whose initial point is and whose components along x-axis and y-axis are and respectively.
Answer
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Hint: We are asked to find the terminal or end point of the given vector. The x-component and y-component is given, using those from the vector. The initial point is also given use this point and the vector you formed using the given components to find the end point.
Complete step-by-step answer:
Given a vector
Initial point of the vector is
x-component of the vector is
y-component of the vector is
Therefore, the vector can be written as, (i)
Let the terminal point be
Let us draw a diagram to understand the problem properly,
Now, observing the figure we can write the vector in terms of their initial and final position vectors as,
(ii)
The initial point can be written in vector form as,
(iii)
The final point can be written in vector form as,
(iv)
Now, putting the values from equation (iii) and (iv) in equation (ii), we get
Now, putting the value of from equation (i), we get
Now, equating x-component we get,
Equating y-component we get,
Therefore, the terminal point is
So, the correct answer is “ ”.
Note: A vector has a starting point and an ending or terminal point. The vector can be formed by subtracting the terminal position vector from the initial position vector. A vector has both magnitude and direction. Suppose we have a vector then its magnitude can be written as, . Always remember these basic concepts of vectors as you may have to use these in solving many problems.
Complete step-by-step answer:
Given a vector
Initial point of the vector is
x-component of the vector is
y-component of the vector is
Therefore, the vector
Let the terminal point be
Let us draw a diagram to understand the problem properly,

Now, observing the figure we can write the vector
The initial point
The final point
Now, putting the values from equation (iii) and (iv) in equation (ii), we get
Now, putting the value of
Now, equating x-component we get,
Equating y-component we get,
Therefore, the terminal point is
So, the correct answer is “
Note: A vector has a starting point and an ending or terminal point. The vector can be formed by subtracting the terminal position vector from the initial position vector. A vector has both magnitude and direction. Suppose we have a vector
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