Why when got bomb explosion even stand a few ways away,it exploded and the impact can kill a person?
Just a curiosity

I believe it's due to the shock wave

haha.. the one killing u isn't the bomb... it's the debris.

No i meant its like in open space then kaboom whole person died

Explosion release a lot of energy, in the form of heat. It heats up the surrounding air and particles so fast that it create a higher pressure. High pressure air move to low pressure region, away from explosion.

Air is very thin, and because of that it is highly compressible. In large explosion, it compress faster and it can expand, that built up pressure later expand rapidly. And because it is very thin, it can travel very far. This is what we call shockwave.

Explosion in water is less dramatic, cause water is heavy (difficult to compress).

How do you know that it can kill a person? Have you done the experiment?