

Bodies in Motion When considering the motion of a body we often need to know details of its speed and the distance it has travelled. In some cases the nature of the motion is very complex and there is no alternative to an indepth mathematical analysis or experimental measurement. There are however many cases in which the motion is fairly simple, or can be approximated to a simple analysis. The equations below are for a body subject to a constant rate of acceleration (or deceleration) v = u + a t s = ( u + v ) t / 2 s = u t + 0.5 a t^{2} v^{2} = u^{2} + 2 a s p = m v E = 0.5 m v^{2}


