Please help me solve this in a way that quot;shows workquot;: A sky-diver drops from a high-flying helicopter. In the absence of air resistance,

Please help me solve this in a way that "shows work": A sky-diver drops from a high-flying helicopter. In the absence of air resistance, what's his/hers instantaneous velocity after 12 seconds? Convert this value to miles per hour and see if it makes sense.