Answer
When a vector is added to the vector, the result is another vector with twice the magnitude in the same direction.
When a vector is subtracted from the vector, the result is a zero vector with zero magnitude.
The magnitude of vec(A) is the scalar quantity of the vector i.e.
|vec(A)|=A.
Work Step by Step
When a vector is added to the vector, the result is another vector with twice the magnitude in the same direction.
When a vector is subtracted from the vector, the result is a zero vector with zero magnitude.
The magnitude of vec(A) is the scalar quantity of the vector i.e.
|vec(A)|=A.