Problema Solution
The height of a flare fired from the deck of a ship in distress can be modeled by h=-16t^2+104t+56, where h is the height of the flare above water and t is the time in seconds. Find the time it takes the flare to hit the water.
Answer provided by our tutors
the flare hits the water when h = 0 for some t > 0 that is, we need to solve the following quadratic equation:
-16t^2+104t+56 = 0
by solving we find:
t = 7 sec
click here to see the step by step solution of the equation:
it takes 7 seconds for the flare to hit the water.