Sado Tanks a Steel Girder to the Back
Out of nowhere a steel girder falls to the ground, but Sado rescues his friends just in time, taking it to the back in the process. This is what’s called an I beam, and their general weight is a bit lower than I thought. Here’s a chart showing general weights of I beams. I’m going to use 67 lbs or 30 Kg as the weight based on Sado’s wingspan coming close to the edges.
The beam sort of came out of nowhere, but my bet is that it came detached from a crane. Usually the girders hand up above the building. The building next to the boys is 5 stories tall, which converts to 16.5 m.
At free fall and after falling roughly 16 m (Accounting for Sado being hunched over), the girder would be falling at a speed of 17.715 m/s.
From here, a simple kinetic energy formula will do the trick.
KE = 1/2 mv^2
.5 * 30 * 17.715^2 = 4,707.32 J, or 1.125 Grams of TNT.
Considering he doesn’t even have powers at this point, very impressive.
Hollow and Ichigo Crash Through Hospital Wall
Ichigo and a hollow crash through the hospital wall. The result is some debris chunks and spall, a combination which means I’ll be using cratering (87 J/cc) for this one. I rarely do that unless it’s actually a crater, but under certain circumstances, I make exceptions.
Don Kanoji is 1.85 m tall. He measures 96 pixels compared to 231 for hole diameter and 26 for hole thickness.
231 / 96 = 2.406 * 1.85 = 4.451 m, diameter of hole.
26 / 96 = .271 * 1.85 = .501 m, hole thickness.
Treating it as a cylinder, the volume of destroyed wall would be 7.8 m^3
7.8 m^3 = 7,800,000 cm^3
7,800,000 * 87 = 678,600,000 J, or 162.189 Kg of TNT.
Ichigo vs the Arrow
Ishida fires an arrow at Ichigo while his back is turned, but he turns around and cuts it down before it can reach him. First off, I will be comparing Ishida’s arrow to one from real-life. I am not a fan of people saying “Well it’s a magic bullet, so it can’t be the same speed” or anything along those lines. Because that would stupidly make the magic item weaker than its real-world counter-part, and if that were the case, they might as well use the real thing.
And if that’s not good enough for you, Ishida does shoot it at a high range:
Traveling multiple city blocks is more than most arrows could say, I bet. Modern bows tend to shoot arrows travel at 300 f/s.
300 f/s = 91.44 m/s.
Ichigo is 1.74 m tall here. I’m using angular size to determine the distance, even though the panel is oddly angled. The human horizontal visual field is 210 degrees. The panel is 647 pixels wide and Ichigo is 262 tall. I also measured his arm (For later) at 107 pixels.
647 / 210 = 3.081 Pixels/Degree.
262 / 3.081 = 85.037 degrees, Ichigo’s height.
107 / 262 = .408 * 1.74 = .71 m, length from shoulder to sword grip.
Using the angular size calculator, we can solve for distance and figure out how far Ichigo is from our view. The total distance comes to .949 m.
Ichigo measures at 693 pixels compared to 645, the length from his grip to sword tip.
645 / 693 = .931 * 1.74 = 1.62 m, length.
Based on the way Ichigo is holding his sword in the final panel where he cuts down the arrow, he probably held the sword completely straight up and kept it that way on the way down.
It looks to me like Ichigo made the cut by the time the arrow reached about 3/4ths down the sword blade, so it was .405 m away from him when he destroyed it. This means that…
.949 – .405 = .544 m, distance traveled while Ichigo reacted.
.544 / 91.44 = .006 s, time frame.
.71 + 1.62 = 2.33 m, radius of swing.
That would make a quarter of a swing 3.66 m.
3.66 / .006 = 610 m/s, or Mach 1.79
RESULTS
Sado Tanks a Steel Girder – 1.125 Grams of TNT
Hollow and Ichigo Crash Through a Wall – 162.189 Kg of TNT
Ichigo Sword Swing Speed – Mach 1.79
Cable's Calculations 