An object is launched at 19.6 meters per second (m/s) from a 58.8-meter tall platform. The equation for the object's height s at time t seconds after launch is s(t) = –4.9t2+ 19.6t +58.8, where s is in meters. When does the object hit the ground? If we move to a 90 meter tall building, when does the object hit the ground? Describe the transformation that took place.