Question

An artillery cannon is aimed at an elevation of 60 degrees above the horizontal. It is fired and 20 seconds later its shell hits the target 500 m above the cannon's altitude.

What is L, the horizontal distance between the cannon and the target?

Answer 1

find Vi from
500m = Visin60 * t -1/2 g t^2 (t=20)
use in:
L= Vicos60*t (t still = 20)