Cumulative ejecta momentum as a function of normalised vertical ejection velocity for impacts on various targets. Panel (a): Homogeneous targets with varying cohesion and coefficient of internal friction (adapted from Raducan & Jutzi 2022) and targets with different boulder configurations. Panels (b), (c), and (d): Targets with high boulder packing. Panels (e) and (f): Targets with loose boulder packing. In all panels, the dashed line shows the cumulative ejecta momentum from an impact on a homogeneous (matrix-only) target.