What Is Newton’s First Law of Motion? Simple Explanation
Introduction A football sitting on a pitch stays exactly where it is. Nobody needs to hold it there — it…
What Is Inertia in Physics? Types and Examples
Introduction Imagine you are sitting on a bus that suddenly brakes hard. Even though the bus stops, your body keeps…
AP Physics 1 Equation Sheet: Complete Guide to Formulas and How to Use Them
Introduction Walking into the AP Physics 1 exam with the equation sheet in front of you should feel like an…
What Is Uniform Motion? Definition and Examples
Introduction Picture a train travelling along a perfectly straight track at exactly 80 kilometres per hour, never speeding up, never…
What Is Non-Uniform Motion? Simple Explanation
Introduction Think about the last time you travelled in a car through a busy town. The car accelerated away from…
What Is Displacement in Physics? Simple Explanation
Introduction Imagine you leave your home in the morning, walk three kilometres through winding streets, stop at a coffee shop,…
What Is Distance in Physics? Definition and Examples
Introduction Imagine you go for a morning walk. You leave your house, walk three blocks to the left, then two…
What Is Reflection of Waves? Definition, Laws, Types & Examples
Introduction Stand at the base of a large cliff and shout. A few seconds later, your voice returns to you.…
What Is Heat Energy? Definition, Transfer, Types & Examples
Introduction Hold your hand close to a warm radiator and you feel heat reaching your skin. Place a cold metal…
What Is Temperature in Physics? Definition, Units, Measurement & Examples
Introduction Pick up a cup of hot tea and hold a glass of cold water in your other hand. You…