1. The problem statement, all variables and given/known data A javelin is thrown 90m in an optimal starting angle. Air resistance is not taken into consideration. a) What is the optimal starting angle? b) At what speed does the javelin fly from the thrower's hand? 2. Relevant equations 3. The attempt at a solution I really have no clue on this one. Is the optimal starting angle 45°? That would seem somehow logical.