Note: I will calculate KE after the speed is evaluated
Chainsaw Man distance[]

Panel = 787pxl
Blue Line = 54pxl | 155270 meters (Via google maps)
Distance = (155270)*(787)/[(54)*2tan(70/2 deg)]
Distance = 1615889.83123 meters
There is no need to calculate Chainsaw Man's body, he is outside the panel
Shot distance[]

The image is self explanatory. We only calculated CM's distance, not the distance of the shots. To find the distance of shot 4 is simple, we just need to divide the distance by 5 and then multiply by 4. This can be used considering that the distances are constant
Distance = (1615889.83123/5)*4
Distance = 1292711.86498 meters
Distance per shot = (1292711.86498/4)
Distance per shot = 323177.966245 meters
Speed of shots[]

Regardless of how far away he is, Makima's shot hits Chainsaw Man almost instantaneously. CM is not even able to drop a centimeter
- Low End - 3 seg
Speed = 1292711.86498/3
Speed = 430903.954993m/s (Massively Hypersonic+)
- High End - 1 seg
Speed = 1292711.86498/1
Speed = 1292711.86498m/s (Massively Hypersonic+)