Answer: non-negative.
- A non-negative
- B negative
- C exactly zero
- D imaginary
Correct answer: A. non-negative
Explanation: A magnitude represents a length, which cannot be negative.

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.