An object is thrown in the air with an initial velocity of 5 m/sec from a height of 9 m. The following equation models the height of the object in meters after t seconds. How many seconds does it take for the object to hit the ground?

Check the picture below.

since we don't get any neat integer values from it hmmm let's plug that in the quadratic formula to see what we get as h(t) = 0.

notice, we do not use the negative value for "t", since the seconds cannot be less than 0.

(-5,-28)

i graphed to on desmos.