WAEC Physics 2010 Theory — Question 16

Model answer

(i) Inertia: the tendency of a body or object to continue in its state of rest or uniform motion unless acted upon by an external force. (ii) Inertia mass: represents resistance to any type of force whatever. The more the mass of a body, the more the force that is required to give it acceleration, in the formula f=ma, where m is the inertia mass of the body.