B737 First Officer reported a loud noise while braking on the landing roll; then observed the cockpit door was stuck by a galley cart and damaged. The pilots taxied to the gate; but had to exit through the emergency cockpit door with no injuries.

Narrative

On day 0; I was assigned to ferry flight xxxx from ZZZ1 to ZZZ. This reassignment occurred at approximately XA:00 local base time. The flight was operated with six flight attendants and zero passengers on board.Event Description:The Captain briefed the flight attendants prior to departure; noting this would be a normal flight with the exception of having no passengers. The flight was uneventful until the landing rollout phase at ZZZ. At approximately 100 knots during deceleration; we experienced what sounded like a massive cabin depressurization accompanied by a very loud explosion.The captain; who was pilot flying; maintained directional control of the aircraft while I called out speeds. Immediately following the noise; I turned to observe the cockpit door completely blown inward off its hinges. I verbally assessed that a galley cart had likely traveled forward from the aft galley and struck the cockpit door. This was later confirmed by the flight attendants.Both the captain and I experienced a significant startle effect but maintained control and composure. We safely taxied to the gate; conducted a normal engine shutdown; and completed all checklists. Due to the condition of the cockpit door; we were unable to exit through it and instead used the emergency cockpit door exit.