There are many forces that fall within the study of the deceleration phase of a kart and they are indicated one by one above.
For significant braking, exceeding 0.5 G of deceleration, only the first two contributions have relevant values, while the others can be ignored. The only non-negligible force that opposes braking, in dynamic equilibrium, is therefore the force of inertia. Therefore, the dynamic balance in the braking of a kart relates to the following equation:
Braking force = Inertia force