Determina el modulo de la fuerza de rozamiento de un cuerpo de 30 kg de masa que se encuentra sobre una superficie horizontal con un coeficiente de rozamiento de 0,30; si se encuentra en moviemiento. Es urgent por favor

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?