Answer: Magnitude and direction.
- A The same starting point in space
- B The same magnitude but possibly different direction
- C The same direction but possibly different magnitude
- D Magnitude and direction
Correct answer: D. Magnitude and direction
Explanation: Two vectors are equal if and only if they have the same magnitude and the same direction.
Triangle law of vector addition: placing vector b at the head of vector a, the diagonal from the start to the final head gives the resultant a + b.
Concept context
Vectors, dot product, cross product, and geometric applications