The position of a particle moving along the x axis is given by x = 6.0t2 - 1.0t3, where x is in meters and t in seconds. What is the position of the particle when it achieves its maximum speed in the positive x direction?
1) 24 m
2) 12 m
3) 32 m
4) 16 m
5) 2.0 m
Answer: 4