Physics
Master the fundamental principles governing motion, forces, energy, waves, and electricity. Build a strong foundation in problem-solving and quantitative reasoning.
Popular Topics
Kinematics (1D)
Kinematics describes motion without considering the forces that cause it.
Newton's Laws
Newton's First Law: an object stays at rest or moves at constant velocity unless acted on by a net force.
Work, Energy, Power
Work is done when a force moves an object through a displacement: W = Fd cos θ.
1Mechanics
Kinematics (1D)
Kinematics describes motion without considering the forces that cause it.
Kinematics (2D / Projectiles)
Projectile motion combines constant velocity in x with free-fall in y.
Newton's Laws
Newton's First Law: an object stays at rest or moves at constant velocity unless acted on by a net force.
Free Body Diagrams
A free body diagram (FBD) shows all forces acting on a single object.
Work, Energy, Power
Work is done when a force moves an object through a displacement: W = Fd cos θ.
Friction
Friction is a contact force that opposes the relative motion or tendency of motion between two surfaces.
2Waves, Gravity & Circuits
Momentum & Collisions
Momentum (p = mv) is a vector quantity describing an object's motion.
Circular Motion
An object in uniform circular motion moves at constant speed along a circular path.
Gravitation
Newton's Law of Universal Gravitation: F = Gm₁m₂/r².
Waves & Sound
Waves transfer energy without transferring matter.
Circuits (Series/Parallel Basics)
Electric current (I) is the flow of charge; measured in amperes.