Fig. 10.

Relationship between the initial velocity and distance for different ejecta mass. Shaded regions and horizontal arrows indicate possible ranges of initial velocities for each ballistic ejecta at two locations, which satisfy the impact condition as shown in Fig. 9. Vertical broken lines indicate the minimum and maximum values that two ballistic ejecta could have the same initial velocity. (b) Relationship between impact velocity (v _f ) and initial velocity (v _i ) for different ejecta mass (m). Shaded regions indicate possible ranges of initial velocities for each ballistic ejecta to produce observed the impact craters.