A water balloon is catapulted into the air so that the height h, in metres, after t, seconds is h= -4.9t²+27t+2.4

Round your answer to hundredths place if needed.

The balloon is meters high after 1 second.

The maximum height of the balloon is m.

The balloon will hit the ground after seconds.

The ball will be 30 meters high first at seconds then again at seconds.