Since X and Y velocity is independent, start projectile motion problem with a separate X and Y givens list as seen here. Horizontal projectile motion math problems start with an object in the air beginning with only horizontal velocity. These problems often start with an object rolled off a table, being thrown horizontally, or dropped by .... Angled Projectile Motion Worksheet (With some horizontal projectiles) 1. An arrow is shot at 30.0 angle with the horizontal. It has a velocity of 49 m/s. a. How high will it go? b. What horizontal distance will the arrow travel?.