Heytesbury and others mathematically determined the distance covered by a body undergoing uniformly accelerated motion (today solved by integration), stating that "a moving body uniformly acquiring or losing that increment will traverse in some given time a completely equal to that which it would traverse if it were moving continuously through the same time with the mean degree ".
Heytesbury e outros determinaron matematicamente a distancia cuberta por un corpo que experimenta movemento acelerado uniformemente (hoxe solucionado por integración), expondo que "un corpo que se move uniformemente adquirindo ou perdendo incrementos atravesará nalgún momento unha completamente igual a aquela que tiña se se movese continuamente o mesmo tempo co grao medio ".