Head velocities for H2G and B2G impacts
| H2G (n=9) | B2G (n=4) | |||||||
| Vxy (m/s) | Vz (m/s) | VR (m/s) | ωR (rad/s) | Vxy (m/s) | Vz (m/s) | VR (m/s) | ωR (rad/s) | |
| Mean | 5.0 | 3.6 | 5.9 | 21.5 | 4.8 | 3.7 | 5.7 | 16.2 |
| SD | 2.0 | 1.1 | 2.2 | 9.2 | 1.2 | 0.6 | 0.5 | 10.6 |
| Range | 1.4–8.2 | 1.7–4.8 | 2.2–9.3 | 11.4–37.0 | 3.5–6.1 | 2.9–4.2 | 5.2–6.2 | 8.3–31.2 |
B2G, body-to-ground impact; H2G, head-to-ground impact; ωR, resultant rotational velocity; VR, resultant translational velocity; Vxy, translational velocity in the field (horizontal) plane; Vz, downward translational velocity.