A projectile is launched at an angle \(\theta\) with initial velocity \(u\). Let \(\theta = \theta_{max}\) be the largest acute angle for which the projectile is always moving away from its launch point. Determine \(\lfloor\theta_{max}\rfloor\) (in degrees).
Details and Assumptions:
- \(\bullet\) \(g \approx 10m/s^2\)