with Solved Example Problems - Position Vector | 11th Physics : UNIT 2 : Kinematics
Chapter: 11th Physics : UNIT 2 : Kinematics
Position Vector
POSITION VECTOR
It
is a vector which denotes the position of a particle at any instant of time,
with respect to some reference frame or coordinate system.
The position vector 
of the particle at a point P is given by
Solved Example Problems for Position Vector
EXAMPLE 2.13
Determine the position vectors for the following particles which are located at points P, Q, R, S.
Example 2.14
A person initially at rest starts to walk 2 m towards north, then 1 m towards east, then 5 m towards south and then 3 m towards west. What is the position vector of the person at the end of the trip?
Solution
As shown in the Figure, the positive x axis is taken as east direction, positive y direction is taken as north.
After the trip, the person reaches the point P whose position vector given by
The displacement direction is south west.
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