The force applied by the action of muscles of our body from body parts like arms and legs is called (a)  

A magnet creates an invisible area of magnetism all around it called a

(a)  

the force due to which the doors of the referigerator open and close is (a)  

A book moving across the desk is an example of (a)  

When we run a piece of paper with the oil in our head with the help of a comb produces (a)  

(a)   is a push or a pull of an object that causes the object to speed up, slow down, or stay in one place.

a force which acts on an object without coming physically in contact with it is (a)  

Forces that require being in contact with another object come under (a)