Why is there such a phenomenon?Because all objects in the absence of external force by the time the state total to maintain uniform motion or stationary state.Stones and bottles were originally static, whipped out the following object, will continue to remain intact.This is the inertia.
Why did this happen? It is because all objects will either maintain a uniform linear motion or remain motionless unless influenced by external forces. The chess piece and the bottle were both at rest initially. They would therefore remain so when the object underneath was pulled away rapidly. This is what we call 'inertia'.
Why is there such a phenomenon? As all the objects will keep the status of uniform linear movement or maintain the rest,except were moved by the external force. Stones and bottles were originally static, whipped out the object beneath quickly, They will continue to remain steady. This is the inertia.