1. a projectile is fired into the air at a projection angle of 30° above the ground. its initial speed is 327 m/s. what is its speed 3 seconds later 2. vf^2=Vi^2+2AΔX 3. So, the angle is 30, Vi=327m/s, Tf=3. trying to find Vf....I'm guessing combine horizontal and vertical, but I have no clue. Help please!