Equation of Motion in a plane with Uniform Acceleration #8211; Suppose an object is moving in XY -plane with acceleration a over an interval of time, then equation of motion be written in terms of components on X and Y -axes, v<sub>x</sub> = v<sub>0X</sub> + a<sub>X</sub>t, v<sub>Y</sub> = v<sub>0Y</sub> + a<sub>y</sub>t, a = a<sub>x</sub>i + a<sub>y</sub>j X = X<sub>0</sub> + v<sub>0x</sub> + 1/2 a<sub>X</sub>t<sup>2</sup> , Y = Y<sub>0</sub> + v<sub>0Y</sub> + 1/2 a<sub>Y</sub>t<sup>2</sup>.