This section covers the following syllabus (Physics 5059) requirements.

• state that mass is a measure of the amount of substance in a body

• state that mass of a body resists a change in the state of rest or motion of the body (inertia)

• state that a gravitational field is a region in which a mass experiences a force due to gravitational attraction

• define gravitational field strength, g, as gravitational force per unit mass