Give one example in each case where —

(a) the force is of contact, and

(b) force is at a distance.

State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?

Give one example in each of the following cases where a force —

(a) stops a moving body.

(b) moves a stationary body.

(c) changes the size of a body.

(d) changes the shape of a body.

Explain giving two examples each of —

(a) Contact forces, and (b) Non-contact forces.