Initial setup
6 inches: no damage
12 inches: no damage
18 inches: no damage
24 inches: no damage
30 inches: no damage
36 inches: bounced harder, but no break
42 inches: bounced harder, but no break
48 inches: bounced harder, but no break
54 inches: bounced harder, but no break
60 inches: FINALLY broke open. Yolk came out.