19 lessons covering the full foundations of classical mechanics — from physical quantities and motion through Newton's laws, energy, momentum, rotation, gravitation, and oscillations — each with theory, worked examples, practice questions, and a downloadable worksheet.
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A physical quantity is anything that can be measured — physics begins by careful...
Units give physical quantities meaning, and the International System of Units (S...
Scalars describe just 'how much,' while vectors also describe 'which way' — this...
The simplest kind of motion happens along a single straight line — mastering it ...
Real-world motion rarely happens in a straight line — two-dimensional motion ana...
A projectile is any object launched into the air and left to move under gravity ...
Newton's three laws of motion form the foundation of classical mechanics, explai...
An object moving in a circle is constantly changing direction, even at constant ...
In physics, 'work' has a precise meaning: force applied over a distance — simply...
Energy is the capacity to do work — it comes in many forms, and one of physics' ...
Power measures how quickly work gets done or energy gets transferred — the same ...
Momentum captures how much 'motion' a moving object carries — a heavy truck and ...
Impulse connects force and time to the change in an object's momentum — explaini...
Rotational motion applies the same core ideas as linear motion -- position, velo...
Torque measures the twisting or turning effect of a force — the same push can ba...
The center of mass is the single point where an object's entire mass can be thou...
Gravity is the force that pulls every mass in the universe toward every other ma...
An oscillation is any repeating back-and-forth motion around a central equilibri...
Simple harmonic motion (SHM) is the most fundamental type of oscillation, where ...
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