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Basic Mathematics & Vectors: Calculus Applications MCQ

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Calculus ApplicationsHardQuestion 5134

Question

A particle's velocity is v = 3t² − 12t + 9. When is the acceleration zero?
  1. A
    t = 1 s
  2. B
    t = 2 s
    Correct
  3. C
    t = 3 s
  4. D
    t = 4 s

Correct answer

t = 2 s

Explanation

a = dv/dt = 6t − 12. Setting a = 0: 6t = 12 → t = 2 s.

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