Any help? Thanks

1. A cannon, elevated 350 above the horizontal, is fired at a castle wall 650m away on level ground. The initial speed of the cannonball is 120m/s. a . What are the initial horizontal (x-direction) and vertical (y-direction) components of the velocity? b. How long will it take for the cannon ball to hit the wall (you already know Ax)? c. How high on the wall does the cannon ball hit (you want to know Ay at the time it hits the wall)