They both fire horizontally, so the initial velocity(in y) for both is zero:
h - (1/2)g*t^2 = h/2 - (1/2)*g*t^2
h = h/2
So, it seems that they can't collide. Still, I know there's something wrong here, I just don't know what...
Homework Statement
Two cannons(A at inital height h; B at initial heigt h/2) fire(horizontally), B firing with higher velocity than A.
Homework Equations
1) If they fire at the same time, is it possible that the projectiles collide?
2) Is it possible for B to delay his shot so that his...