On level ground a shell is fired with an initial velocity of 40.0 m/s at 60° above the

horizontal.
-How long does it take to reach its highest point?
-Find its maximum height.
-How far from its firing point does the shell land?

1 answer

(a) when v=0: 40 sin60° - gt = 0
(b) and (c) see the excellent wikipedia article on Trajectory