A soccer player kicks the ball to a height of 1 meter inside the goal. The equation for the height h of the ball at time t is #h=-4.9t^2-5t+2#, how do you find the time the ball reached the goal?
Please see the explanation for steps leading to the answer:
Set h = 1 and the solve for t:
Use the quadratic formula but discard the negative value, because negative time makes no sense: