A building has a height of $40$ metres and stands on horizontal ground. A ball is thrown from the top corner of the building with a speed of $30$ m$/$s at an angle of $30$ degrees above the

horizontal. Ignoring air resistance, calculate the time until the ball hits the ground, and the distance from the base of the building where the ball lands. $($Assume g $=9\mathrm{.}8$ m$/$s$\mathrm{²\; )}$