Explain the motion of projectiles by breaking it into components
X and Y components can be treated separately. X-direction is subject to no acceleration (V=Vo; X=Vot), while Y-direction is subject to an acceleration of gravity (V=Vo +gt; Y=Vot+½gt² ). Whether or not an object is dropped or launched horizontally, when considering the Y-direction, the object is considered to start from rest. However, if an object is launched at an angle, the motion of the object must be broken down into X and Y components.