Kinematics of motion in a straight line — practice question

A particle moves along a straight line. It is initially at rest at a point $A$ on the line and, $10$ seconds later, it is at rest again at a different point $B$ on the same line. The velocity $t$ seconds after leaving $A$ is $0.72t^2 - 0.096t^3$ for $0 \leq t \leq 5$, and $2.4t - 0.24t^2$ for $5 \leq t \leq 10$.