Can anyone say that what will happen to the coin and why.

 * Set a five- rupee coin on a stiff card covering an empty glass tumbler standing on a table as shown in Fig. 9.7.
  
   * Give the card a sharp horizontal flick with a finger. If we do it fast then the card shoots away. If we do it fast then the card shoots away, allowing the coin to fall vertically into the glass tumbler due to its inertia.

    * The inertia of the coin tries to maintain its state of rest even when the card flows off.
         
               
  Fig. 9.7 : When the card is flicked with the finger the coin placed over it falls in the tumbler.