Question

A ball rolls off a platform of height 1.8m at a horizontal speed of 15 ms⁻¹. How far off the edge of the platform does it land?

Answer 1

S = ½ gt²  
1.8m = ½ x 10ms⁻¹ x t²
t² = 0.36s²
t = 0.6s   
s = vt      
   = 15m s⁻¹ x 0.6s =9m