Part D Chicago has two airports (MDW and ORD). If you're flying with Delta Airlines
(DL) and your primary concern is to arrive on time, is it better to fly to MDW or
to ORD?

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).