Table 1:

The peak transmitted forces (Fmax) for test Groups I and II and the impact force reduction ratio (η) for different drop heights.

Drop height	Test group I		Test group II		Force reduct ration
h	Fpeak no-air	Std	Fpeak air	Std	η	Std
(m)	(kN)	(kN)	(kN)	(kN)	(%)	(%)
0.61	1.59	0.03	1.58	0.03	99.74	2.72
1.52	2.48	0.03	2.47	0.05	99.60	2.52
1.63	2.65	0.24	2.54	0.02	96.07	8.73
1.73	2.94	0.66	2.60	0.02	88.22	19.70
1.83	7.33	3.87	2.69	0.03	36.66	19.37
1.93	14.40	2.51	2.52	0.22	17.50	3.40