This is an irregular verb. It follows the conjugation pattern of the verb buscar.
PresentPresente
Mi hermanito siempre choca con los muebles.
My little brother always bumps into the furniture.
PreteritePretérito indefinido
El camión chocó contra un árbol anoche.
The truck crashed into a tree last night.
FutureFuturo
Si miras el móvil, chocarás con alguien.
If you look at your phone, you will bump into someone.