The Journal

All articles

Every piece we've published, sorted by date. Each ends with worked problems and a FAQ.

Diagram of projectile motion showing the parabolic trajectory, launch angle, range and maximum height

Projectile Motion: A Complete Guide

Projectile motion explained simply: learn the range formula R=v²sin(2θ)/g, max height, and time of flight with clear diagrams, worked examples and a free lab.

12 min read

Specific heat capacity comparison showing equal heat warms iron faster than aluminium and water

Thermodynamics

What Is Specific Heat Capacity?

Specific heat capacity is the heat needed to raise 1 kg of a substance by 1 °C. This guide explains the Q=mcΔT formula with a materials table, worked examples and clear FAQs.

13 min read

Classical Mechanics

What Is Friction?

Friction is the force that resists sliding between two surfaces. This guide explains what friction is, the f = μN formula, static vs kinetic types, real-world examples, and eight worked problems.

13 min read

Classical Mechanics

Newton’s Second Law of Motion (F = ma)

Newton's second law (F = ma) links force, mass and acceleration. This guide explains it in plain English with worked examples, common mistakes and an interactive lab.

11 min read

Heat vs temperature comparison showing two beakers at the same temperature holding different amounts of thermal energy

Thermodynamics

Heat vs Temperature: What’s the Difference?

Heat and temperature are not the same thing. Learn the difference, the Q=mcΔT formula, real-world examples and worked problems — including why two objects can share a temperature yet hold very different amounts of heat.

14 min read

Newton's laws of motion diagram showing inertia, F=ma, and action-reaction forces

Classical Mechanics

Newton’s Laws of Motion Explained

Newton's three laws of motion explain how forces change movement, summed up by F = ma. Learn each law with worked examples, original diagrams, and an interactive force simulator.

12 min read

Classical Mechanics

What Is Energy in Physics?

What is energy in physics? Energy is the capacity to do work, measured in joules. Learn the KE and PE formulas with clear worked examples and diagrams.

11 min read

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