Physics - Mechanics - Newton's Laws - Newton's First Law (Inertia) - Newton's First Law

A 4-step lesson. Step 1: 'Newton's First Law: An object at rest stays at rest, and an object in motion stays in motion at constant velocity, UNLESS acted on by an unbalanced force.' Step 2: 'Part 1 - Rest: A book on a table will never start moving by itself. It needs a force (a push) to start moving