⚛️ Physics · Motion in a Plane · NEET & JEE

A particle travels 20 m in the first 5 seconds and 30 m in next 5 seconds. Acceleration is uniform. Acceleration is:

Answer: 0.4 m/s².

A 0.4 m/s²
B 0.8 m/s²
C 1.0 m/s²
D 2.0 m/s

Correct answer: A. 0.4 m/s²

Explanation: Difference in distances in equal time intervals = aT². 30-20 = a×5² → 10=25a → a=0.4 m/s².

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 particle travels 20 m in the first 5 seconds and 30 m in next 5 seconds. Acceleration is uniform. Acceleration is:

Concept context

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