Main calc[]
Gaea Diameter: 689 px | 12741981.12 meters
Vlitra diameter: 256 px | 4734320.99669 meters
Vlitra height: 130 px | 2404147.38113 meters
Lip thickness: 15 px | 277401.6209 meters
Lip thickness: 26 px | 277401.6209 meters
Vlitra length: 407 px | 4342402.29638 meters
Volume: 8.73e+19 m^3
Hollow volume: 9.76e+18 m^3
Actual volume: 8.73e+19-9.76e+18 = 7.754e+19 m^3
Outer core density: 12.6 - 13 g/cm3
Average: (12.6+13)/2 = 12.8 g/cm3 | 12800 kg
Vlitra mass: 7.754e+19*12800 = 9.92512e+23 kg (Class Z)
Gaea diameter: 1212 px | 12741981.12 meters
Distance traveled: 290 px | 3048823.86534 meters
Timeframe: 7.30-7.28 = 0.02 seconds
Velocity: 3048823.86534 meters/0.02 seconds = 152441193 m/s or 0.50848908614 SoL (Relativistic+)
Relativistic KE: 14392638981069143620542902283255139923028 joules or 3.44033998249 Quettatons (Brown Dwarf level)
Re-calculated version[]
Since the other one kinda breaks KE rules, I'll calculate the destruction instead. Vlitra comes from the very depths of Gaea, so he'd have to burrow from the core, this includes the mantle, which is solid.
Gaea diameter: 908 px | 12742 km
Crater diameter: 450 px | 6314.8678414 km
Radius: 3157.4339207 km
Crust thickness: 33 px | 463.090308368 km
Mantle thickness: 2900 km
Total thickness: 463.090308368+2900 = 3363.09030837 km
Volume: 105331178386.5 km^3 or 1.053311783865e+26 cm^3
Using pulverization of rock since there are no extra fragments from within Gaea: 1.053311783865e+26*214 = 2.2540872e+28 joules or 5.38739770554 exatons (Multi-Continent level)
Fun little addition[]
Vlitra thickness: 277401.6209 meters
Vlitra length: 4342402.29638 meters
Vlitra diamter: 4734320.99669 meters
Volume: 1.9e+18 m^3 or 1.9e+24 cm^3
Fragmentation of rock: 1.9e+24*8 = 1.52e+25 joules or 3.632887189292584 petatons (Continent level+)