Mathematics for IGCSE & O level - Vectors (Section 1 - No. 11)
What would happen to a vector, when multiplied by a scalar of -1?
The magnitude would increase and the direction would change.
The magnitude would decrease and the direction would change.
The magnitude would stay the same and the direction would change.
The magnitude and direction would stay the same.
Explanation
Multiplying by -1 reverses the direction of the vector.