A flare was fired upwards into the air. the flare follows a path modelled by h=5(t-10)2 +405, where h is the the flares hight above the water, in meters, and t is the time silence the flare was launched, in seconds. a)what was the flares initial height above the water?
b)after how long did the flare hit the water?
c)what was the flares greatest height above the water? when did the flare reach this height?