Action and reaction - fire extinguisher on cart
A fire extinguisher is fixed on the back of a chair which is fixed on a cart. When the handle of the fire extinguisher is squeezed, the flow from the nozzle of the fire extinguisher pushes the cart to move to the opposite direction.
|Fire extinguisher without the rubble nozzle
|fire extinguisher tips are in
|nozzle tips to hold the extinguishers in place on the cart