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A particle travels in a straight line through a fixed point O such that its displacement S metres, from O is given by S =...

A particle travels in a straight line through a fixed point O such that its displacement S metres, from O is given by S = 3t³ – 27t² + 72t + 4 where t is the time in seconds after passing O.
Calculate;
a) The displacement of the particle at t = 3.
b) The value of t for which the particle is momentarily at rest.
c) The acceleration when t = 4.
d) At what time is its minimum velocity?

Answers

sharon kalunda answered the question on August 16, 2019 at 13:56

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