cart break down door

Kamijou was about to run towards the door yelling, but he would only provoke the
criminal and probably wouldn’t break down the door.
The door wasn’t metal, but it didn’t look like a simple tackle would break it. The lock
was electronic, so using something like a wire wouldn’t be any help either.
While he thought about all that, a movement was made on the other side of the door.
It seemed the man making the threat and the person he was threatening had entered a
different nearby small room.
(Dammit!!)
Kamijou looked around the area and spotted an aluminum cart for the in-flight meals. It
was something like a square baby carriage.
He roughly grabbed the cart’s handle and turned it towards the door.
He didn’t even have time to think about how much it would cost to pay for the repairs.
“Ooooohhhhhhhhhhhhhh!!” he yelled as he ran forward.
The cart struck the door.
With a loud crash, the front of the aluminum cart was smashed in. However, the door
did not escape unscathed. The lock popped off and the door opened as if it had been
kicked open. Losing to the momentum, Kamijou and the broken cart continued out into
the passageway.
He let go of the cart and looked around.

- Toaru Majutsu no Index Volume 17, Chapter 2 Part 12