Question

give two examples rach for a contact force and a force at a distance.

Answer 1

When we push a car or pull a string,it is a contact force.
Gravitational force is a non- contact force or force at a distance.So, when a ball is thrown up, it comes down due to gravity. Magnetic force is another example of a non- contact force. Iron is attracted by a magnet due to its magnetic properties.

Answer 2

example of contact force is frictional force ..
example of non contact force is magnetic force