fling something open

The door was flung open, and an old man stuck his head out at me.

Almost immediately the door was flung open and a man appeared.

The door was flung open and two more agents ran inside, past him.

Before he could reach it, however, the door flung open.

Just then the door was flung open from the inside.

Then a door which I had not noticed before was flung open.

The door to the locked room in his mind was flung open.

A small door in the big gates was flung open.

But for Brown, the door has finally been flung open.

Though the window was flung open, there wasn't a breath of air in the room.