Question

Define unit vector, null vector and position vector.

Answer 1

Hey mate,

# Definitions-
# Unit vector-
- A vector which has magnitude one unit is called unit vector.
- It represents spatial direction of quantity.

# Null vector-
- A vector whose magnitude is zero is called null vector.
- It's direction in not defined.

# Position vector-
- A vector starting from the origin is called position vector.
- It represents position of the object with respect to origin.

Hope that cleared your concepts.