A Projectile Is Shot Horizontally at 23

Essay

A projectile is shot horizontally at 23.4 m/s from the roof of a building 55 m tall.
Effects of air are negligible.
(a)Determine the time necessary for the projectile to reach the ground below.
(b)Determine the distance from the base of the building that the projectile lands.
(c)Determine the horizontal and vertical components of the velocity just before the projectile reaches the ground.