Suppose that the equation of motion for a particle (where $s$ is in meters and $t$ in seconds) is $$s = t^4 - 2 t^3 + 6$$ .
(a) Find the time (other than at $t=0$ when the acceleration is 0.

Acceleration is 0 at time $t$ =
(b) Find the position and velocity at this time.

Position =

Velocity =