A projectile is fired vertically into the air. Its motion is described by h -16t^2 + 320t where h is the projectile's height in feet after t seconds.

A) During what time intervals with the height of the project I’ll be below 1024 feet?

B) During what time intervals will the height of the projectile be above 1024 feet?

C) When will the projectile land back on the ground?