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PROJECTILE MOTION Mathematical Applications PROCEDURES FOR PROBLEM SOLVING HORIZONTALLY LAUNCHED PROJECTILES Carefully read the problem and list known and unknown information in terms of the symbols of the kinematic equations. For convenience sake, make a table with horizontal information on one side and vertical information on the other side. Identify the unknown quantity that the problem requests you to solve for. Select either a horizontal or vertical equation to solve for any additional information that you must have to solve for the unknown requested. (Usually, if a horizontal equation is used to solve for time, then a vertical equation can be used to solve for the final unknown quantity.) PROCEDURES FOR PROBLEM SOLVING NON-HORIZONTALLY LAUNCHED PROJECTILES Use the given values of the initial velocity (the magnitude and the angle) to determine the horizontal and vertical components of the velocity (v ix and v iy ). Carefully read the problem and list known and unknown information in terms of the symbols of the kinematic equations. For convenience sake, make a table with horizontal information on one side and vertical information on the other side . Identify the unknown quantity that the problem requests you to solve for. PROCEDURES FOR PROBLEM SOLVING NON-HORIZONTALLY LAUNCHED PROJECTILES Select either a horizontal or vertical equation to solve for the time of flight of the projectile. For non horizontally launched projectiles, the second equation listed among the vertical equations ( v fy = v iy + a y *t) is usually the most useful equation .