Imaging a car decelerating from 120km/h to 80km/h. How much do the disk breaks heat up if 50% of the energy translates directly as heat (to the breaks). The car's mass is 1300kg and the full mas of the disk breaks are 11kg. The disks are made of steel Q=0.46 (heat capacity) I've been using Ke formula and Q=cm¤T ¤ stands for ''difference in''. Not sure what the correct notation is.