apologia physics inertia definition
inertia - (physics) the tendency of a body to maintain its state of rest or uniform motion unless acted upon by an external force. natural philosophy, physics - the science of matter and energy and their interactions; his favorite subject was physics.
Geophysics is the branch of physics which deals with the study of earth. It is mainly concerned with the shape, structure and composition of earth. It also studies the gravitational force, magnetic fields, earthquakes, magmas, eruption of volcanoes etc. Geophysics Definition |.