A particle is located at a point P with coordinates (3, 4) in the xy-plane. What is the correct expression for its position vector?
Q1. A particle is located at a point P with coordinates (3, 4) in the xy-plane. What is the correct expression for its position vector?
Answer: r = 3i + 4j
Explanation: The position vector is defined as r = xi + yj. Option B is incorrect because it swaps the unit vectors for the coordinates.