A projectile is shot from the edge of a cli at an initial speed of v0 at angle with the horizontal. The projectile hits the ground below at point P after time t?. Using the quantities given (i.e. v0, , t?), (a) determine the height of the cli above ground level, (b) determine the distance of the point P from the base of the vertical cli , and (c) at the instant just before the projectile hits point P, nd the horizontal and the vertical components of its velocity.