 Hello and welcome to the session. In this session we are going to discuss the following question and the question says that, Find dimension of kinetic energy. We know dimensions are physical properties or quantities which can be measured. Some of the basic dimensions are length, mass and time. The symbol of length is L in square brackets, the symbol of mass is M in square brackets and the symbol of time is T in square brackets. There are some quantities which are derived from basic dimensions. Like area, volume and speed, the dimension of area is L square, the dimension of volume is LQ and the dimension of speed is LT raised to power minus 1. With this key idea let us proceed with the solution. We have to find the dimension of kinetic energy and we know that kinetic energy is equal to half MV square. Where M is mass and V is speed. From the two tables we know dimension of mass is M and the dimension of speed is LT raised to power minus 1. So in the dimension of kinetic energy we will have the dimension of mass and the dimension of speed. So dimension of kinetic energy is equal to dimension of mass into dimension of speed whole square. Therefore dimension of kinetic energy is equal to M into LT raised to power minus 1 whole square. This is equal to M into L square T raised to power minus 2 which is equal to ML square T raised to power minus 2. This is the required answer. This completes our session. Hope you enjoyed this session.