Blast: 440 m per second Ground surface
temperature: 3,000 ~ 4,000ºC Force of the blast was equal to 6.7 ~ 10 tons (equivalent
to the weight of a large truck) per 1㎡.
Automobile: 22 m per second (at 80 km per hour)
<Let’s make a comparison＞
Shinkansen (Bullet train): 83 m per second (at 300 km per hour)
Airplane: 222 m per second (at 800 km per hour)）
Very powerful typhoon: 44 km or more per second