A tennis ball is projected

Question

horizontally from the top of a cliff
50m high with a velocity of 10ms -1 ,
find
(a) the time taken to reach the ground
(b) the distance from the foot of the
cliff to where the ball hits the ground.

Answer 1

vertical:
h=1/2 g t^2 solve for t

horizontal: 10m/s*t

Answer 2

I need an answer

Answer 3

Please I need answers for that question