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⚛️ Physics  ·  Motion in a Plane  ·  NEET & JEE

A projectile is launched horizontally. Which component of its velocity remains constant throughout?

Answer: Horizontal.

  • A Vertical
  • B Both horizontal and vertical
  • C Horizontal
  • D Neither

Correct answer: C. Horizontal

Explanation: In projectile motion, there is no horizontal force, so horizontal velocity remains constant.

Projectile trajectories launched at 15, 30, 45, 60, 75 and 90 degrees at the same speed, each annotated with range R, maximum height H and time of flight T, with coloured dots marking equal time intervals

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.

Read the full Motion in a Plane notes →