If a Mack truck and Honda Civic have a head on collision, upon which vehicle is the impact force greater?

Also, which vehicle experiences the greater acceleration?

The FORCE is equal on both (Newton's 3rd Law)

Because the Honda is less massive, it will have the greater acceleration (Newton's 2nd Law, F = MA, If F is constant and mass is small, acceleration must be large.)

The lighter one will have a bigger impact/more damaged.greater acceleration? It depends on how much the person presses the accelerate pedal.Bigger mass, more momentum which is the Muck truck, thus, the Honda civic will be thrown away or wrecked