Hi all, I have been given a projectile motion problem, where a ball is launched from a catapult. The range, maximum height and the launching angle is known. The range is 2.32m, the max. height is 1.26m and the launching angle is 35° from the horizontal. The projectile flight goes for 1.125 seconds (that is, it is in the air for 1.125 seconds). However, I need to find the initial velocity of the ball. How do I do this with the information given? I have to do this (calculate all the relevant physical quantities) for a model that takes into consideration of drag (that is, a realistic model) and a model where gravity is the only real force acting on the projectile (an ideal projectile). I am in Grade 11 AUS, so my knowledge of mechanics/physics is limited. Thanks in advance! From a very confused student.