Answer:
(a) Applying brakes in a vehicle - Contact force
(b) a coconut falling from a coconut tree - Contact force
(c ) the planets revolving around the sun - Non-Contact force
(d) a ball is rolling on ground - Contact force
Step-by-step explanation:
Contact forces are defined as the forces that apply between two objects which are in physical contacts with each other while non-contact forces forces that act between two objects that are not in physical contact with each other.
Given are some of the examples of contact and non-contact forces. So example of contact forces are applying brakes in a vehicle, a coconut falling from a coconut tree and a ball is rolling on ground.
Example of non-contact force is the planets revolving around the sun.