A simple yet rigorous mathematical derivation of the centripetal acceleration formula, a=(v^2)/r, including that the direction is towards the centre of the circle. Use as a handout for A-level students who want to push themselves a little beyond the specification without getting out of their depth.

6-minute video leading students through the derivation of the four Equations of Motion for objects moving with constant acceleration (SUVAT), starting from a velocity-time graph and then using the gradient and the area under the graph (and a little algebraic manipulation) to arrive at the set of four. Great for some flipped learning, a little revision or some consolidation.