Answer: direction.
- A direction
- B the colour
- C the mass
- D the charge
Correct answer: A. direction
Explanation: Equal vectors match in both magnitude and direction.

Projectiles at equal speed: range is maximum at 45°, and complementary angles (30° and 60°) share the same range. Image: Cmglee, CC BY-SA 3.0, via Wikimedia Commons.
Concept context
Vectors, projectile motion, uniform circular motion, and relative velocity - the foundation of 2D kinematics for NEET and JEE.