The motion of a spring that is subject to a frictional force or a damping force (such as a shock absorber in a car) is often modeled by the product of an exponential function and a sine or cosine function. Suppose that the equation of motion of a point on a spring is $s(t)=2e^{-1.5t}\sin{2\pi t}$, where $s$ is measured in centimeters and $t$ in seconds. Find the velocity after $t$ seconds.

$v(t) =$