Further MathematicsDifferentiationWAEC
The displacement of a particle is s = t³ − 6t² + 9t metres. Find its velocity at t = 2 seconds.
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Answer: C. −3 m/s
v = ds/dt = 3t² − 12t + 9 = 12 − 24 + 9 = −3 m/s.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.