Crash, Impact
Noun and する verb
しょうげき
あなたは爆発の衝撃で気絶したのよ。
You passed out from the shock of an explosion.
If you collide and attack what you're colliding into, you're going to not only cause a large shock but also crash and impact into them. Blamo!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.