YOU SAID:

when I slammed throw the window I realized I was falling increasingly fast from a tenth floor

INTO JAPANESE

私は窓を投げつけたとき私は10階からますます速く落ちていることに気づいた

BACK INTO ENGLISH

When I threw the window I noticed that it was falling increasingly faster from the 10th floor

INTO JAPANESE

私が窓を投げたとき私はそれが10階からますます速く落ちていることに気付いた

BACK INTO ENGLISH

When I threw the window I noticed that it was falling increasingly faster from the 10th floor