Answer: Vertical height only.
- A Horizontal speed only
- B Both horizontal and vertical
- C Vertical height only
- D Neither
Correct answer: C. Vertical height only
Explanation: Time to fall depends only on vertical height h: t = √(2h/g). Horizontal speed does not affect fall time.

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.