⚛️ Physics · Motion in a Plane · NEET & JEE

A projectile is launched at 20 m/s at 60° above the horizontal. Its speed at the highest point of the trajectory is:

Answer: 10 m/s.

A 10 m/s
B 20 m/s
C 17.3 m/s
D 0 m/s

Correct answer: A. 10 m/s

Explanation: At the top only the horizontal component remains: v = 20cos60° = 10 m/s.

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.

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A projectile is launched at 20 m/s at 60° above the horizontal. Its speed at the highest point of the trajectory is:

Concept context

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