Fig. 8.

(a) Relationship between the initial velocity (v _i ) and distance (D) for different ejecta mass (m = 0.3−3.2 ton). (b) Relationship between impact velocity (v _f ) and initial velocity (v _i ) for different ejecta mass (m). All calculations satisfy an impact angle (θ _f ) of 50–60°. Solid circles indicate average values. Error bars include results for a range of impact angles and use drag coefficients for different ejecta shapes (high or low cubic).