Because what I was thinking was up to halfway, both the vertical and horizontal distances increase, meaning that D would obviously also increase.
So to prove for all times, I thought you could use a time after the maximum height to find the condition for the launch angle which would be always...
Hi, I just wanted to ask, for Question 11 b) in the extension 1 paper, would it be valid to assume that 3/4 of the trajectory of the projectile is what defines whether the distance increases over time? (i.e. subbing in the time after the projectile has travelled 3/4 of its range)