Classical Mechanics
Kinetic Energy
Kinetic energy is the energy of motion, and understanding why it scales with the square of speed reshapes how you…
Classical Mechanics
Classical Mechanics
Power in Physics
Power is not how much work you do but how fast you do it, and grasping that distinction explains everything…
Classical Mechanics
Momentum and Impulse
Momentum is the stubbornness of moving things, and impulse is how you change it, which is why airbags, follow-through, and…
Classical Mechanics
Newton’s Law of Universal Gravitation
With one equation, Newton revealed that the force pulling an apple to the ground is the same force holding the…
Classical Mechanics
Centre of Mass
Every object behaves, for the purposes of motion, as if all its mass were squeezed into a single magic point…
Classical Mechanics
Tension Force
A rope cannot push, only pull — and that single rule explains how ropes, cables and strings transmit force across…
Classical Mechanics
Normal Force Explained
The invisible push a surface gives back when you press on it is the normal force — and it is…
Classical Mechanics
Gravitational Force and Newton’s Law of Gravitation
The same force that drops an apple holds the Moon in orbit, and Newton captured it all in one famous…
Classical Mechanics
Conservation of Momentum
When no outside force interferes, the total momentum of a system stays locked in place, which is why rockets fly…
Classical Mechanics
What Is Energy?
Energy is the universal currency that lets one thing change another, never created or destroyed but endlessly traded between motion,…