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Question 5232
NEET Physics · Hard

Motion in a Straight Line: Non-Uniform Acceleration MCQ

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Non-Uniform AccelerationHardQuestion 5232

Question

A particle's position is x = 3t³ − 2t² + t. The acceleration at t = 2 s is:
  1. A
    28 m/s²
  2. B
    30 m/s²
  3. C
    32 m/s²
    Correct
  4. D
    34 m/s²

Correct answer

32 m/s²

Explanation

v = dx/dt = 9t² − 4t + 1. a = dv/dt = 18t − 4. At t=2: a = 36−4 = 32 m/s².

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