Answer the following in brief:
 
Define inertia and mention its types.
 
Inertia is the tendency of an object to resist changes in its state of or .
Inertia is of three types. They are:
  1. Inertia of Rest - The tendency of an object to .
  2. Inertia of Motion – The tendency of an object to continue moving with the .
  3. Inertia of Direction – The tendency of an object to continue moving in the .