Concepts

📘 Accuracy vs. Precision

In science, understanding the difference between accuracy and precision is crucial for reliable data. This page will define what each term means and show you...

📘 Dimensional Analysis

Dimensional analysis is a powerful tool in physics that goes beyond just converting units. It’s a fundamental way to understand and check equations by focus...

📘 Graphing Data and Relationships

In physics, graphs are powerful tools. They help us see patterns, understand relationships, and make predictions about how different measurements are connec...

📘 Physics Symbols and Notation

Physics uses a special language of symbols (like single letters) and short ways of writing (notation) to stand for things we measure and how they connect. L...

📘 SI Units and Base Quantities

Physics needs measurements that everyone understands, no matter where they are. That’s where the SI system comes in. It’s the standard way we measure things...

📘 Significant Figures Rules

Significant figures are a way to show how precise a measurement is. Knowing which digits are “significant” helps us avoid pretending our measurements are mo...

📘 Uncertainty

Every measurement you make has some amount of uncertainty. This is a fundamental concept in science and engineering, as it reminds us that no tool is perfec...

📘 Acceleration

Acceleration is the rate at which an object’s velocity changes. If you are speeding up, slowing down, or changing direction, you are accelerating. It is the...

📘 Distance and Displacement

Distance is the total path traveled, a scalar quantity. Displacement is the change in position from start to end, a vector quantity.

📘 Free Fall

Free fall is the motion of an object when gravity is the only force acting on it. In free fall, the object’s acceleration is constant and always directed do...

📘 Kinematics

Kinematics is the study of how objects move, focusing on their position, velocity, and acceleration without considering the forces that cause the motion.

📘 Position-Time Graphs

A position-time graph is a powerful tool that shows an object’s location over time, allowing you to quickly determine its velocity and direction of motion.

📘 Speed and Velocity

Speed tells you how fast something is going (a scalar quantity), while velocity tells you how fast and in what direction (a vector quantity).

📘 Velocity-Time Graphs

A velocity-time graph shows an object’s velocity over time. The slope of the line represents its acceleration, and the area under the curve represents its d...

📘 Projectile Motion

Projectile motion describes the curved, parabolic path an object takes when launched into the air. It’s analyzed by treating the motion as two independent c...

📘 Relative Velocity

Relative velocity is the velocity of an object as perceived from a specific frame of reference. It is a fundamental concept in kinematics, often calculated ...

📘 Uniform Circular Motion

Uniform circular motion (UCM) describes an object moving in a circular path at a constant speed. Due to its continuously changing direction, the object’s ve...

📘 Vector Addition and Subtraction

Vector addition combines two or more vectors to find a single resultant vector, often using the graphical head-to-tail method. Vector subtraction is a speci...

📘 Vectors and Scalars

A scalar quantity is a measurement that only has magnitude (a size or amount), while a vector quantity has both magnitude and a specific direction.