# A particle moves along a straight line such that its displacement at any time 𝑡 is given by 𝑆 = 𝑡 3 − 6𝑡2 + 3𝑡 + 4 𝑚𝑒𝑡𝑟𝑒𝑠 The velocity when the acceleration is zero is

Question : A particle moves along a straight line such that its displacement at any time 𝑡 is given by 𝑆 = 𝑡 3 − 6𝑡2 + 3𝑡 + 4 𝑚𝑒𝑡𝑟𝑒𝑠 The velocity when the acceleration is zero is

(A) $3ms^{-1}$

(B) $-12ms^{-1}$

(C) $42ms^{-1}$

(D) $-9ms^{-1}$