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Home › Subjects › JEE Physics

JEE Physics

Physics questions for JEE Main — Mechanics, Electrostatics, Optics, Modern Physics.

301 Q 9 Topics Take Test

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Difficulty: All Easy Medium Hard 301–301 of 301

Topics in JEE Physics

All Mechanics 100 Thermodynamics 100 Electrostatics 100 Current Electricity 100 Magnetism 100 Optics 100 Modern Physics 100 Semiconductors 100 Waves 100

Q.301 Easy Mechanics

A particle moves in a straight line with velocity v = 3t² + 2t m/s. What is its acceleration at t = 2s?

A 14 m/s²

B 16 m/s²

C 18 m/s²

D 20 m/s²

Correct Answer: A. 14 m/s²

EXPLANATION

a = dv/dt = d(3t² + 2t)/dt = 6t + 2. At t = 2s, a = 6(2) + 2 = 14 m/s²

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