1. The problem statement, all variables and given/known data A particle P is projected from the origin with initial speed 5 m/s and projection angle theta. At time t = 0, when P is at the origin, another particle Q begins to move on the (horizontal) x axis with initial speed 15/4 m/s and constant acceleration a = 3g/4 m/s^2. Determine the time t when P collides with Q, and the distance from the origin where this occurs. 2. Relevant equations 3. The attempt at a solution I know the times are the same but I cant solve for the equations because the angle is unknown. Any advice on how to go about solving this ?