1. What equation can be used to calculate the horizontal displacement of a projectile?
2. What equation can be used to calculate the vertical displacement of a non-horizontally launched projectile?
3. Fire any ball at an angle of 60 degrees and a speed of 20 m/s. Determine the vertical and horizontal components of the projectile's initial velocity. Confirm your values by using the Pythagorean theory (vi = √(vxi^2 + vyi^2)). Sketch the vector addition diagram for the vector addition of these two initial velocities and the resultant velocities.