Question

For a particle moving in a straight line, the position of the particle at time (t) is given by x = t3 – 6t2 + 3t + 7 what is the velocity of the particle when it's acceleration is zero ? (a) – 9ms–1 (b) –12ms–1 (c) 3ms–1 (d) 42ms–1

Answer 1

3m/s
hope it's correct