For positive constants [math] and [math], the velocity, [math], of a particle of mass [math] at time [math] is given by [math] At what rate is the velocity is changing at time 0? At [math]? What do your answers tell you about the motion?

At what rate is the velocity changing at time 0?
rate =
At what rate is it changing at [math]?
rate =

(What do your answers tell you about the motion of the particle?)