In chapter 411, Deku reacts to a radiowave fired by Shigaraki, I am going to calculate the movement of his blackwhip and his point-blank reaction with his arms.
Measurements[]
This is the pixel-scaling of distances and movements.
And this is the pixel-scaling of the measurements of Shigaraki and Deku.
For Deku's movement I'm going to use the length of an Average Man's Arm: 63.5 cm | 0.635m
Calculations[]
Blackwhip Speed[]
Deku distance from POV:
1100 * 0.094665 / (8 x 2 x tan (70 degrees / 2)) = 9.29323 m
Shigaraki distance from POV:
1100 * 0.18150 / (38 x 2 x tan (70 degrees / 2)) = 3.75171 m
Distance to cover by the Radio-wave:
9.29323 - 3.75171 = 5.54152 m
Blackwhip extension measurement that covers Deku:
0.72 + 0.81 + 0.32 + 1 = 2.85 m
So, in order for Deku to cover himself in time, Blackwhip should have a speed of:
2.85 / 5.54152 = 0.51429932581 or 51% SOL (Relativistic+)
Deku takes cover instantly as Blackwhip appears to break from the damage, so:
Deku Speed[]
Distance from the broken part to the part covered by his arms: 0.06757 m
A complete circle has 360 degrees. If he moved his hands and arms from his thigh to almost his forehead in a semicircular arc, he would be covering half of that circle, i.e. 180 degrees.
Since the average arm length is 0.635 meters and the movement spans an angle of 180 degrees (or π radians), we can use the formula for the arc length of a circle to calculate the distance.
The formula for the arc length of a circle is:
Arc length = Radius * Angle in radians
Replacing the values:
Arc length = 0.635 * π = 1.995 m
Now, we replace the values for the speed:
1.995 / 0.06757 = 29.5249371 TIMES SOL or FTL+
Final Tally[]
Blackwhip speed required = 154183059.032 m/s (Relativistic+)
Deku speed required = 8851353465.5 m/s (FTL+)