Question

An object is launched vertically in the air at 26.95 meters persecond from a 9 meter tall platform. Using the projectile motionmodel, h(t)= -4.9t^2 + vt + h, where h(t) the height of theprojectile t seconds after its departure, v is the intial velocityin meters per second, and h is the initial height in meters,determine how long it will take for the object to reach its maximumheight? What is the maximum height?