All,
So, in the Kamen Rider Kiva movie King of Hell's Castle in the Demon World, in order to defeat big bad Kamen Rider Legend Arc, Kiva does this: https://www.youtube.com/watch?v=VUxvgWWSOUU.
Speed Calculation[]
Impressive, right? Now, to get a handle on this feat, why not first calculate the attack's speed? Based on prior experience, I know that the Kamen Rider series's cinematic time almost always equals real time. Thus, I can determine Kiva's speed.
The moon's average distance from Earth is 384,400 kilometers. It took Kiva 8 seconds to traverse said distance.
384,400 / 8 = 48,040 km/s. AKA Mach 1,400.87464, or Massively Hypersonic. Considering that similar or higher speeds have been seen in Kamen Rider before, this seems pretty reasonable.
Attack Potency Calculation[]
Now, we need to calculate the attack itself. Based on the imprint's size compared to the moon's size, we can work this one out.
Moon Diameter: 457 pixels or 3,474 km (wikipedia)
Imprint Diameter: 213 pixels.
457 / 213 = 2.145
3,474 / 2.145 = 1,619.58 km.
How do we do the volume, however? Well, the crater is 3-Dimensional, and with a little work, I was able to take a measurement of the depth.
Crater Depth = 4 pixels
Crater Diameter = 213 pixels or 1,619.58 km.
213 / 4 = 53.25
1,619.58 / 53.25 = 30.41 km.
Now, to calculate the volume, I made the (fairly reasonable) assumption that the crater is a semisphere. So, I calculated the volume as if it was a sphere and then divided it in half.
Crater Radius = 809.79 km.
V = (4/3) PI r2
V = 2,224,363,897 cubic km.
/ 2 = 1,112,181,948 cubic km.
/ 2 (only half the area was crushed. The other half was merely fractured.) = 556,090,973.2 cubic km.
= 5.56090974 x 10 to the 23 cubic cm.
x 8 = 4.448727792 x 10 to the 24th joules.
= 1.063 Petatons.
This is Large Country/Small Continent Level.
Apparently another calc exists somewhere on the Naruto Forums that puts Emperor Kiva and Legend Arc at Yottatons, but since I haven't been able to locate that one, I'll just have to go with this for the moment.