If a mack truck and and a mini cooper have a head on collision which vehicle would experience the greater impulse?

In a head-on collision between a Mack truck and a Mini Cooper, both vehicles experience the same magnitude of impulse, but the effects differ due to their masses. Impulse is defined as the change in momentum, which is equal for both vehicles due to Newton's third law (action-reaction). However, the Mini Cooper would likely experience a greater change in velocity and, consequently, a greater force impact relative to its size and structure, leading to more severe damage and potential injury.