SOLUTION: A football is kicked into the air and this is the equation h(t)=-4.9t^2+19.6t+2 How do I determine using algebra how long the ball was in the air?

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Question 847936: A football is kicked into the air and this is the equation
h(t)=-4.9t^2+19.6t+2
How do I determine using algebra how long the ball was in the air?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You kick it when time is t=0.
Solve for t when h(t)=0 because then the ball is on the ground.
-4.9t%5E2%2B19.6t%2B2=0