A soldier fired from the gun at 120 Km / hour
With an angle of 30 degrees
How long will the cannonball remain in the air a) How far will it go If the cannon was on a 100 m high hill, how far would it go? C) If the ball was rather 33.27m high, at what angle would have been the cannon d)?

Learn to google. Your question is literally plug in the information into a formula. Understanding why you plug in the variables would definetly help you in the long run

http://www.physicsclassroom.com/class/vectors/Lesson-2/Non-Horizontally-Launched-Projectiles-Problem-Solv

exam done