3. An object is launched at 190.6 meters per second (m/s). The equation for the object's height
s at time t seconds after launch is s(t) = -4.9t^2 + 190.6t + 58.8, where s is in meters.
a. What was the initial height of the object?
b. At what time will the object first hit the ground?
c. What was the maximum height reached by the object?