Define non-contact force.
(a) Define frictional force (or friction)
(b) Explain why frictional force is said to be a contact force.
(c) Explain why magnetic force is said to be a non-contact force.
What is a non contact force? Give some examples of it and explain why they are non-contact forces?
Define contact and non -contact forces. Give 3 examples of each.
Define Contact force