A punter on a football team kicks a football upward from the ground with an initial velocity of 64 feet per second. The height of the football stadium is 70 feet. The height of an object with respect to time is modeled by the equation h=1/2gt^2+vt+s where g is -32 ft/sec^2, v is the initial velocity, and s is the initial height. What is the function rule that models this situation?