AP Physics C: Mechanics
Advanced Placement Physics C: Mechanics with calculus-based physics principles.
Newton's Laws of Motion
The Foundations of Dynamics
Newton's three laws explain the relationship between force and motion, forming the backbone of classical mechanics.
Newton's First Law
An object at rest stays at rest, and an object in motion stays in motion unless acted on by a net external force. This is the law of inertia.
Newton's Second Law
The net force on an object is equal to the mass times its acceleration: \( \vec{F}_{\text{net}} = m\vec{a} \). Calculus helps solve problems where force or mass changes with time.
Newton's Third Law
For every action, there is an equal and opposite reaction. Forces always come in pairs!
Solving Forces with Calculus
When forces vary with position or time, calculus lets us find acceleration and predict motion accurately.
Why It Matters
Newton's Laws explain everything from why your seatbelt is important to how rockets launch!
Examples
Pushing a sled across ice shows Newton's First and Second Laws in action.
A swimmer pushes the water back and moves forward, demonstrating Newton's Third Law.
In a Nutshell
Newton's Laws describe how forces affect motion, forming the core of classical mechanics.