Answer: two dimensions.
- A two dimensions
- B one dimension
- C three dimensions
- D zero dimensions
Correct answer: A. two dimensions
Explanation: A projectile moves in a vertical plane, combining horizontal and vertical motion - two dimensions.

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.